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Red Hat Security Advisory 2023-3325-01

Red Hat Security Advisory 2023-3325-01 - Multicluster Engine for Kubernetes 2.1.7 images Multicluster engine for Kubernetes provides the foundational components that are necessary for the centralized management of multiple Kubernetes-based clusters across data centers, public clouds, and private clouds. You can use the engine to create new Red Hat OpenShift Container Platform clusters or to bring existing Kubernetes-based clusters under management by importing them. After the clusters are managed, you can use the APIs that are provided by the engine to distribute configuration based on placement policy.

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=====================================================================
Red Hat Security Advisory

Synopsis: Critical: Multicluster Engine for Kubernetes 2.1.7 security fixes and container updates
Advisory ID: RHSA-2023:3325-01
Product: multicluster engine for Kubernetes
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3325
Issue date: 2023-05-25
CVE Names: CVE-2022-2795 CVE-2022-2928 CVE-2022-2929
CVE-2022-36227 CVE-2022-41973 CVE-2023-0361
CVE-2023-27535 CVE-2023-32313 CVE-2023-32314
=====================================================================

  1. Summary:

Multicluster Engine for Kubernetes 2.1.7 General Availability release
images, which address security issues and update container images.

Red Hat Product Security has rated this update as having a security impact
of Critical. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE links in the References section.

  1. Description:

Multicluster Engine for Kubernetes 2.1.7 images

Multicluster engine for Kubernetes provides the foundational components
that are necessary for the centralized management of multiple
Kubernetes-based clusters across data centers, public clouds, and private
clouds.

You can use the engine to create new Red Hat OpenShift Container Platform
clusters or to bring existing Kubernetes-based clusters under management by
importing them. After the clusters are managed, you can use the APIs that
are provided by the engine to distribute configuration based on placement
policy.

Security fix(es):

  • CVE-2023-32314 vm2: Sandbox Escape
  • CVE-2023-32313 vm2: Inspect Manipulation
  1. Solution:

For multicluster engine for Kubernetes, see the following documentation for
details on how to install the images:

https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.6/html-single/multicluster_engine_operator/index#installing-while-connected-online

  1. Bugs fixed (https://bugzilla.redhat.com/):

2208376 - CVE-2023-32314 vm2: Sandbox Escape
2208377 - CVE-2023-32313 vm2: Inspect Manipulation

  1. References:

https://access.redhat.com/security/cve/CVE-2022-2795
https://access.redhat.com/security/cve/CVE-2022-2928
https://access.redhat.com/security/cve/CVE-2022-2929
https://access.redhat.com/security/cve/CVE-2022-36227
https://access.redhat.com/security/cve/CVE-2022-41973
https://access.redhat.com/security/cve/CVE-2023-0361
https://access.redhat.com/security/cve/CVE-2023-27535
https://access.redhat.com/security/cve/CVE-2023-32313
https://access.redhat.com/security/cve/CVE-2023-32314
https://access.redhat.com/security/updates/classification/#critical

  1. Contact:

The Red Hat security contact is [email protected]. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2023 Red Hat, Inc.
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Red Hat Security Advisory 2023-3296-01 - Multicluster Engine for Kubernetes 2.2.4 images Multicluster engine for Kubernetes provides the foundational components that are necessary for the centralized management of multiple Kubernetes-based clusters across data centers, public clouds, and private clouds. You can use the engine to create new Red Hat OpenShift Container Platform clusters or to bring existing Kubernetes-based clusters under management by importing them. After the clusters are managed, you can use the APIs that are provided by the engine to distribute configuration based on placement policy.

Red Hat Security Advisory 2023-3296-01

Red Hat Security Advisory 2023-3296-01 - Multicluster Engine for Kubernetes 2.2.4 images Multicluster engine for Kubernetes provides the foundational components that are necessary for the centralized management of multiple Kubernetes-based clusters across data centers, public clouds, and private clouds. You can use the engine to create new Red Hat OpenShift Container Platform clusters or to bring existing Kubernetes-based clusters under management by importing them. After the clusters are managed, you can use the APIs that are provided by the engine to distribute configuration based on placement policy.

Red Hat Security Advisory 2023-3296-01

Red Hat Security Advisory 2023-3296-01 - Multicluster Engine for Kubernetes 2.2.4 images Multicluster engine for Kubernetes provides the foundational components that are necessary for the centralized management of multiple Kubernetes-based clusters across data centers, public clouds, and private clouds. You can use the engine to create new Red Hat OpenShift Container Platform clusters or to bring existing Kubernetes-based clusters under management by importing them. After the clusters are managed, you can use the APIs that are provided by the engine to distribute configuration based on placement policy.

Red Hat Security Advisory 2023-3296-01

Red Hat Security Advisory 2023-3296-01 - Multicluster Engine for Kubernetes 2.2.4 images Multicluster engine for Kubernetes provides the foundational components that are necessary for the centralized management of multiple Kubernetes-based clusters across data centers, public clouds, and private clouds. You can use the engine to create new Red Hat OpenShift Container Platform clusters or to bring existing Kubernetes-based clusters under management by importing them. After the clusters are managed, you can use the APIs that are provided by the engine to distribute configuration based on placement policy.

Red Hat Security Advisory 2023-3297-01

Red Hat Security Advisory 2023-3297-01 - Red Hat Advanced Cluster Management for Kubernetes 2.7.4 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs.

Red Hat Security Advisory 2023-3297-01

Red Hat Security Advisory 2023-3297-01 - Red Hat Advanced Cluster Management for Kubernetes 2.7.4 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs.

Red Hat Security Advisory 2023-3297-01

Red Hat Security Advisory 2023-3297-01 - Red Hat Advanced Cluster Management for Kubernetes 2.7.4 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs.

Red Hat Security Advisory 2023-3297-01

Red Hat Security Advisory 2023-3297-01 - Red Hat Advanced Cluster Management for Kubernetes 2.7.4 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs.

RHSA-2023:3297: Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.7.4 security fixes and container updates

Red Hat Advanced Cluster Management for Kubernetes 2.7.4 General Availability release images, which fix security issues and update container images. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-32313: A flaw was found in the vm2. After making a vm, the inspect method is read-write for console.log, which allows an attacker to edit options for console.log. This issue impacts the integrity by changing the log subsystem. * CVE-2023-32314: A flaw was found in the vm2 sandbo...

RHSA-2023:3297: Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.7.4 security fixes and container updates

Red Hat Advanced Cluster Management for Kubernetes 2.7.4 General Availability release images, which fix security issues and update container images. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-32313: A flaw was found in the vm2. After making a vm, the inspect method is read-write for console.log, which allows an attacker to edit options for console.log. This issue impacts the integrity by changing the log subsystem. * CVE-2023-32314: A flaw was found in the vm2 sandbo...

RHSA-2023:3297: Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.7.4 security fixes and container updates

Red Hat Advanced Cluster Management for Kubernetes 2.7.4 General Availability release images, which fix security issues and update container images. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-32313: A flaw was found in the vm2. After making a vm, the inspect method is read-write for console.log, which allows an attacker to edit options for console.log. This issue impacts the integrity by changing the log subsystem. * CVE-2023-32314: A flaw was found in the vm2 sandbo...

RHSA-2023:3297: Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.7.4 security fixes and container updates

Red Hat Advanced Cluster Management for Kubernetes 2.7.4 General Availability release images, which fix security issues and update container images. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-32313: A flaw was found in the vm2. After making a vm, the inspect method is read-write for console.log, which allows an attacker to edit options for console.log. This issue impacts the integrity by changing the log subsystem. * CVE-2023-32314: A flaw was found in the vm2 sandbo...

RHSA-2023:3296: Red Hat Security Advisory: Multicluster Engine for Kubernetes 2.2.4 security fixes and container updates

Multicluster Engine for Kubernetes 2.2.4 General Availability release images, which fix security issues and update container images. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-32313: A flaw was found in the vm2. After making a vm, the inspect method is read-write for console.log, which allows an attacker to edit options for console.log. This issue impacts the integrity by changing the log subsystem. * CVE-2023-32314: A flaw was found in the vm2 sandbox. When a host ...

RHSA-2023:3296: Red Hat Security Advisory: Multicluster Engine for Kubernetes 2.2.4 security fixes and container updates

Multicluster Engine for Kubernetes 2.2.4 General Availability release images, which fix security issues and update container images. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-32313: A flaw was found in the vm2. After making a vm, the inspect method is read-write for console.log, which allows an attacker to edit options for console.log. This issue impacts the integrity by changing the log subsystem. * CVE-2023-32314: A flaw was found in the vm2 sandbox. When a host ...

RHSA-2023:3296: Red Hat Security Advisory: Multicluster Engine for Kubernetes 2.2.4 security fixes and container updates

Multicluster Engine for Kubernetes 2.2.4 General Availability release images, which fix security issues and update container images. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-32313: A flaw was found in the vm2. After making a vm, the inspect method is read-write for console.log, which allows an attacker to edit options for console.log. This issue impacts the integrity by changing the log subsystem. * CVE-2023-32314: A flaw was found in the vm2 sandbox. When a host ...

RHSA-2023:3296: Red Hat Security Advisory: Multicluster Engine for Kubernetes 2.2.4 security fixes and container updates

Multicluster Engine for Kubernetes 2.2.4 General Availability release images, which fix security issues and update container images. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-32313: A flaw was found in the vm2. After making a vm, the inspect method is read-write for console.log, which allows an attacker to edit options for console.log. This issue impacts the integrity by changing the log subsystem. * CVE-2023-32314: A flaw was found in the vm2 sandbox. When a host ...

RHSA-2023:3296: Red Hat Security Advisory: Multicluster Engine for Kubernetes 2.2.4 security fixes and container updates

Multicluster Engine for Kubernetes 2.2.4 General Availability release images, which fix security issues and update container images. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-32313: A flaw was found in the vm2. After making a vm, the inspect method is read-write for console.log, which allows an attacker to edit options for console.log. This issue impacts the integrity by changing the log subsystem. * CVE-2023-32314: A flaw was found in the vm2 sandbox. When a host ...

RHSA-2023:3296: Red Hat Security Advisory: Multicluster Engine for Kubernetes 2.2.4 security fixes and container updates

Multicluster Engine for Kubernetes 2.2.4 General Availability release images, which fix security issues and update container images. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-32313: A flaw was found in the vm2. After making a vm, the inspect method is read-write for console.log, which allows an attacker to edit options for console.log. This issue impacts the integrity by changing the log subsystem. * CVE-2023-32314: A flaw was found in the vm2 sandbox. When a host ...

RHSA-2023:3265: Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.12.3 Security and Bug fix update

Updated images that fix several bugs are now available for Red Hat OpenShift Data Foundation 4.12.3 on Red Hat Enterprise Linux 8 from Red Hat Container Registry. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-23539: A flaw was found in the jsonwebtoken package. The affected versions of the `jsonwebtoken` library could be misconfigured so that legacy, insecure key types are used for signature verification. For example, DSA keys could be used with the RS256 algorithm. *...

RHSA-2023:1326: Red Hat Security Advisory: OpenShift Container Platform 4.13.0 security update

Red Hat OpenShift Container Platform release 4.13.0 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.13. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2021-4235: A flaw was found in go-yaml. This issue occurs due to unbounded alias chasing, where a maliciously crafted YAML file can cause the system to consume significant system resources. If p...

GHSA-p5gc-c584-jj6v: vm2 vulnerable to Inspect Manipulation

In versions 3.9.17 and lower of vm2 it was possible to get a read-write reference to the node `inspect` method and edit options for `console.log`. ### Impact A threat actor can edit options for `console.log`. ### Patches This vulnerability was patched in the release of version `3.9.18` of `vm2`. ### Workarounds After creating a vm make the `inspect` method readonly with `vm.readonly(inspect)`. ### References PoC - https://gist.github.com/arkark/c1c57eaf3e0a649af1a70c2b93b17550 ### For more information If you have any questions or comments about this advisory: - Open an issue in [VM2](https://github.com/patriksimek/vm2) Thanks to @arkark (Takeshi Kaneko) of GMO Cybersecurity by Ierae, Inc. for disclosing this vulnerability.

Red Hat Security Advisory 2023-2948-01

Red Hat Security Advisory 2023-2948-01 - The device-mapper-multipath packages provide tools that use the device-mapper multipath kernel module to manage multipath devices. Issues addressed include an insecure handling vulnerability.

Red Hat Security Advisory 2023-2792-01

Red Hat Security Advisory 2023-2792-01 - The Berkeley Internet Name Domain is an implementation of the Domain Name System protocols. BIND includes a DNS server ; a resolver library ; and tools for verifying that the DNS server is operating correctly. Issues addressed include a denial of service vulnerability.

RHSA-2023:3106: Red Hat Security Advisory: curl security and bug fix update

An update for curl is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-27535: A flaw was found in the Curl package. Libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, several FTP settings were left out from the configuration match checks, making them match too easily. The problematic settings are `CURLOPT_FTP_ACCOUNT`, `CURLOPT_FTP_ALTERN...

RHSA-2023:3018: Red Hat Security Advisory: libarchive security update

An update for libarchive is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-36227: A flaw was found in libarchive. A missing check of the return value of the calloc function can cause a NULL pointer dereference in an out-of-memory condition or when a memory allocation limit is reached, resulting in the program linked with libarchive to crash.

RHSA-2023:3002: Red Hat Security Advisory: bind security and bug fix update

An update for bind is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2795: A flaw was found in bind. When flooding the target resolver with special queries, an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service.

RHSA-2023:3000: Red Hat Security Advisory: dhcp security and bug fix update

An update for dhcp is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2928: An integer overflow vulnerability was found in the DHCP server. When the "option_code_hash_lookup()" function is called from "add_option()", it increases the option's "refcount" field. However, there is not a corresponding call to "option_dereference()" to decrement the "refcount" field. The "add_option()" function is only used in server responses to...

RHSA-2023:3000: Red Hat Security Advisory: dhcp security and bug fix update

An update for dhcp is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2928: An integer overflow vulnerability was found in the DHCP server. When the "option_code_hash_lookup()" function is called from "add_option()", it increases the option's "refcount" field. However, there is not a corresponding call to "option_dereference()" to decrement the "refcount" field. The "add_option()" function is only used in server responses to...

RHSA-2023:2948: Red Hat Security Advisory: device-mapper-multipath security and bug fix update

An update for device-mapper-multipath is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-41973: A vulnerability was found in the device-mapper-multipath. The device-mapper-multipath allows local users to obtain root access, in conjunction with CVE-2022-41974. Local users that are able to access /dev/shm can change symlinks in multipathd due to incorrect symlink handling, which may lead to controlled file writes outside of th...

RHSA-2023:2792: Red Hat Security Advisory: bind9.16 security and bug fix update

An update for bind9.16 is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2795: A flaw was found in bind. When flooding the target resolver with special queries, an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service. * CVE-2022-3094: A flaw was found in Bind, where sending a flood of dynamic DNS updates may cause named to allocate large am...

GHSA-whpj-8f3w-67p5: vm2 Sandbox Escape vulnerability

A sandbox escape vulnerability exists in vm2 for versions up to 3.9.17. It abuses an unexpected creation of a host object based on the specification of `Proxy`. ### Impact A threat actor can bypass the sandbox protections to gain remote code execution rights on the host running the sandbox. ### Patches This vulnerability was patched in the release of version `3.9.18` of `vm2`. ### Workarounds None. ### References PoC - https://gist.github.com/arkark/e9f5cf5782dec8321095be3e52acf5ac ### For more information If you have any questions or comments about this advisory: - Open an issue in [VM2](https://github.com/patriksimek/vm2) Thanks to @arkark (Takeshi Kaneko) of GMO Cybersecurity by Ierae, Inc. for disclosing this vulnerability.

CVE-2023-32313: Inspect method should be readonly · patriksimek/vm2@5206ba2

vm2 is a sandbox that can run untrusted code with Node's built-in modules. In versions 3.9.17 and lower of vm2 it was possible to get a read-write reference to the node `inspect` method and edit options for `console.log`. As a result a threat actor can edit options for the `console.log` command. This vulnerability was patched in the release of version `3.9.18` of `vm2`. Users are advised to upgrade. Users unable to upgrade may make the `inspect` method readonly with `vm.readonly(inspect)` after creating a vm.

CVE-2023-32314: Sandbox Escape in [email protected]

vm2 is a sandbox that can run untrusted code with Node's built-in modules. A sandbox escape vulnerability exists in vm2 for versions up to and including 3.9.17. It abuses an unexpected creation of a host object based on the specification of `Proxy`. As a result a threat actor can bypass the sandbox protections to gain remote code execution rights on the host running the sandbox. This vulnerability was patched in the release of version `3.9.18` of `vm2`. Users are advised to upgrade. There are no known workarounds for this vulnerability.

RHSA-2023:2710: Red Hat Security Advisory: Red Hat Single Sign-On 7.6.3 for OpenShift image security update

A new image is available for Red Hat Single Sign-On 7.6.3, running on Red Hat OpenShift Container Platform from the release of 3.11 up to the release of 4.12.0. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2021-0341: In verifyHostName of OkHostnameVerifier.java, there is a possible way to accept a certificate for the wrong domain due to improperly used crypto. This could lead to remote information disclosure with no additional execution privileges needed. User interaction...

Red Hat Security Advisory 2023-2502-01

Red Hat Security Advisory 2023-2502-01 - The Dynamic Host Configuration Protocol is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and administer DHCP on a network. Issues addressed include a memory leak vulnerability.

Red Hat Security Advisory 2023-2502-01

Red Hat Security Advisory 2023-2502-01 - The Dynamic Host Configuration Protocol is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and administer DHCP on a network. Issues addressed include a memory leak vulnerability.

RHSA-2023:2650: Red Hat Security Advisory: curl security update

An update for curl is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-27535: A flaw was found in the Curl package. Libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, several FTP settings were left out from the configuration match checks, making them match too easily. The problematic settings are `CURLOPT_FTP_ACCOUNT`, `CURLOPT_FTP_ALTERN...

RHSA-2023:2532: Red Hat Security Advisory: libarchive security update

An update for libarchive is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-36227: A flaw was found in libarchive. A missing check of the return value of the calloc function can cause a NULL pointer dereference in an out-of-memory condition or when a memory allocation limit is reached, resulting in the program linked with libarchive to crash.

RHSA-2023:2459: Red Hat Security Advisory: device-mapper-multipath security and bug fix update

An update for device-mapper-multipath is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-41973: A vulnerability was found in the device-mapper-multipath. The device-mapper-multipath allows local users to obtain root access, in conjunction with CVE-2022-41974. Local users that are able to access /dev/shm can change symlinks in multipathd due to incorrect symlink handling, which may lead to controlled file writes outside of th...

RHSA-2023:2261: Red Hat Security Advisory: bind security and bug fix update

An update for bind is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2795: A flaw was found in bind. When flooding the target resolver with special queries, an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service. * CVE-2022-3094: A flaw was found in Bind, where sending a flood of dynamic DNS updates may cause named to allocate large amount...

RHSA-2023:2502: Red Hat Security Advisory: dhcp security and enhancement update

An update for dhcp is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2928: An integer overflow vulnerability was found in the DHCP server. When the "option_code_hash_lookup()" function is called from "add_option()", it increases the option's "refcount" field. However, there is not a corresponding call to "option_dereference()" to decrement the "refcount" field. The "add_option()" function is only used in server responses to...

RHSA-2023:2502: Red Hat Security Advisory: dhcp security and enhancement update

An update for dhcp is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2928: An integer overflow vulnerability was found in the DHCP server. When the "option_code_hash_lookup()" function is called from "add_option()", it increases the option's "refcount" field. However, there is not a corresponding call to "option_dereference()" to decrement the "refcount" field. The "add_option()" function is only used in server responses to...

Red Hat Security Advisory 2023-2107-01

Red Hat Security Advisory 2023-2107-01 - The Migration Toolkit for Containers (MTC) 1.7.9 is now available. Red Hat Product Security has rated this update as having a security impact of Moderate. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2023-2104-01

Red Hat Security Advisory 2023-2104-01 - Red Hat Advanced Cluster Management for Kubernetes 2.5.8 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs. Issues addressed include a denial of service vulnerability.

RHSA-2023:2104: Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.5.8 security updates and bug fixes

Red Hat Advanced Cluster Management for Kubernetes 2.5.8 General Availability release images, which fix bugs and security updates container images. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-25881: A flaw was found in http-cache-semantics. When the server reads the cache policy from the request using this library, a Regular Expression Denial of Service occurs, caused by malicious request header values sent to the server.

Gentoo Linux Security Advisory 202305-22

Gentoo Linux Security Advisory 202305-22 - Multiple vulnerabilities have been discovered in ISC DHCP, the worst of which could result in denial of service. Versions less than 4.4.3_p1 are affected.

Gentoo Linux Security Advisory 202305-22

Gentoo Linux Security Advisory 202305-22 - Multiple vulnerabilities have been discovered in ISC DHCP, the worst of which could result in denial of service. Versions less than 4.4.3_p1 are affected.

RHSA-2023:2083: Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.6.5 security updates and bug fixes

Red Hat Advanced Cluster Management for Kubernetes 2.6.5 General Availability release images, which fix bugs and security updates container images. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-3841: A Server-Side Request Forgery (SSRF) vulnerability was found in the console API endpoint from Red Hat Advanced Cluster Management for Kubernetes (RHACM). An attacker could take advantage of this as the console API endpoint is missing an authentication check, allowing unauth...

Red Hat Security Advisory 2023-2061-01

Red Hat Security Advisory 2023-2061-01 - Multicluster Engine for Kubernetes 2.1.6 images Multicluster engine for Kubernetes provides the foundational components that are necessary for the centralized management of multiple Kubernetes-based clusters across data centers, public clouds, and private clouds. You can use the engine to create new Red Hat OpenShift Container Platform clusters or to bring existing Kubernetes-based clusters under management by importing them. After the clusters are managed, you can use the APIs that are provided by the engine to distribute configuration based on placement policy. Issues addressed include a denial of service vulnerability.

RHSA-2023:2023: Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.11.7 Bug Fix and security update

Updated images that fix several bugs are now available for Red Hat OpenShift Data Foundation 4.11.7 on Red Hat Enterprise Linux 8 from Red Hat Container Registry. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-40186: A flaw was found in HashiCorp Vault and Vault Enterprise, where they could allow a locally authenticated attacker to gain unauthorized access to the system, caused by a flaw in the alias naming schema implementation for mount accessors with shared alias n...

Red Hat Security Advisory 2023-1888-01

Red Hat Security Advisory 2023-1888-01 - Red Hat Advanced Cluster Management for Kubernetes 2.7.3 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs. Issues addressed include denial of service and server-side request forgery vulnerabilities.

CVE-2023-27535

An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.

Ubuntu Security Notice USN-5964-1

Ubuntu Security Notice 5964-1 - Harry Sintonen discovered that curl incorrectly handled certain TELNET connection options. Due to lack of proper input scrubbing, curl could pass on user name and telnet options to the server as provided, contrary to expectations. Harry Sintonen discovered that curl incorrectly handled special tilde characters when used with SFTP paths. A remote attacker could possibly use this issue to circumvent filtering.

RHSA-2023:1200: Red Hat Security Advisory: gnutls security and bug fix update

An update for gnutls is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-0361: A timing side-channel vulnerability was found in RSA ClientKeyExchange messages in GnuTLS. This side-channel may be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption, the attacker would need to send a large amount of specially...

Debian Security Advisory 5366-1

Debian Linux Security Advisory 5366-1 - The Qualys Research Labs reported an authorization bypass (CVE-2022-41974) and a symlink attack (CVE-2022-41973) in multipath-tools, a set of tools to drive the Device Mapper multipathing driver, which may result in local privilege escalation.

Red Hat Security Advisory 2023-0402-01

Red Hat Security Advisory 2023-0402-01 - An update for bind is now available for Red Hat Enterprise Linux 7.

RHSA-2023:0402: Red Hat Security Advisory: bind security update

An update for bind is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2021-25220: bind: DNS forwarders - cache poisoning vulnerability * CVE-2022-2795: bind: processing large delegations may severely degrade resolver performance

Scanvus now supports Vulners and Vulns.io VM Linux vulnerability detection APIs

Hello everyone! Great news for my open source Scanvus project! You can now perform vulnerability checks on Linux hosts and docker images not only using the Vulners.com API, but also with the Vulns.io VM API. It’s especially nice that all the code to support the new API was written and contributed by colleagues from Vulns.io. […]

Scanvus now supports Vulners and Vulns.io VM Linux vulnerability detection APIs

Hello everyone! Great news for my open source Scanvus project! You can now perform vulnerability checks on Linux hosts and docker images not only using the Vulners.com API, but also with the Vulns.io VM API. It’s especially nice that all the code to support the new API was written and contributed by colleagues from Vulns.io. […]

Scanvus now supports Vulners and Vulns.io VM Linux vulnerability detection APIs

Hello everyone! Great news for my open source Scanvus project! You can now perform vulnerability checks on Linux hosts and docker images not only using the Vulners.com API, but also with the Vulns.io VM API. It’s especially nice that all the code to support the new API was written and contributed by colleagues from Vulns.io. […]

snap-confine must_mkdir_and_open_with_perms() Race Condition

Qualys discovered a race condition (CVE-2022-3328) in snap-confine, a SUID-root program installed by default on Ubuntu. In this advisory,they tell the story of this vulnerability (which was introduced in February 2022 by the patch for CVE-2021-44731) and detail how they exploited it in Ubuntu Server (a local privilege escalation, from any user to root) by combining it with two vulnerabilities in multipathd (an authorization bypass and a symlink attack, CVE-2022-41974 and CVE-2022-41973).

Critical Ping Vulnerability Allows Remote Attackers to Take Over FreeBSD Systems

The maintainers of the FreeBSD operating system have released updates to remediate a security vulnerability impacting the ping module that could be potentially exploited to crash the program or trigger remote code execution. The issue, assigned the identifier CVE-2022-23093, impacts all supported versions of FreeBSD and concerns a stack-based buffer overflow vulnerability in the ping service. "

Ubuntu Security Notice USN-5658-3

Ubuntu Security Notice 5658-3 - USN-5658-1 fixed several vulnerabilities in DHCP. This update provides the corresponding update for Ubuntu 14.04 ESM. It was discovered that DHCP incorrectly handled option reference counting. A remote attacker could possibly use this issue to cause DHCP servers to crash, resulting in a denial of service.

Ubuntu Security Notice USN-5658-3

Ubuntu Security Notice 5658-3 - USN-5658-1 fixed several vulnerabilities in DHCP. This update provides the corresponding update for Ubuntu 14.04 ESM. It was discovered that DHCP incorrectly handled option reference counting. A remote attacker could possibly use this issue to cause DHCP servers to crash, resulting in a denial of service.

CVE-2022-36227: There is a NULL pointer dereference vulnerability · Issue #1754 · libarchive/libarchive

In libarchive 3.6.1, the software does not check for an error after calling calloc function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference or, in some cases, even arbitrary code execution.

Ubuntu Security Notice USN-5731-1

Ubuntu Security Notice 5731-1 - It was discovered that multipath-tools incorrectly handled symlinks. A local attacker could possibly use this issue, in combination with other issues, to escalate privileges. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 22.10. It was discovered that multipath-tools incorrectly handled access controls. A local attacker could possibly use this issue, in combination with other issues, to escalate privileges.

Leeloo Multipath Authorization Bypass / Symlink Attack

The Qualys Research Team has discovered authorization bypass and symlink vulnerabilities in multipathd. The authorization bypass was introduced in version 0.7.0 and the symlink vulnerability was introduced in version 0.7.7.

CVE-2022-41973: Release 0.9.2: Merge pull request #46 from openSUSE/queue · opensvc/multipath-tools

multipath-tools 0.7.7 through 0.9.x before 0.9.2 allows local users to obtain root access, as exploited in conjunction with CVE-2022-41974. Local users able to access /dev/shm can change symlinks in multipathd due to incorrect symlink handling, which could lead to controlled file writes outside of the /dev/shm directory. This could be used indirectly for local privilege escalation to root.

CVE-2022-2929: CVE-2022-2929 DHCP memory leak

In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory.

CVE-2022-2928: CVE-2022-2928 An option refcount overflow exists in dhcpd

In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However, there is not a corresponding call to option_dereference() to decrement the refcount field. The function add_option() is only used in server responses to lease query packets. Each lease query response calls this function for several options, so eventually, the reference counters could overflow and cause the server to abort.

Ubuntu Security Notice USN-5658-1

Ubuntu Security Notice 5658-1 - It was discovered that DHCP incorrectly handled option reference counting. A remote attacker could possibly use this issue to cause DHCP servers to crash, resulting in a denial of service. It was discovered that DHCP incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause DHCP clients and servers to consume resources, leading to a denial of service.

Ubuntu Security Notice USN-5658-1

Ubuntu Security Notice 5658-1 - It was discovered that DHCP incorrectly handled option reference counting. A remote attacker could possibly use this issue to cause DHCP servers to crash, resulting in a denial of service. It was discovered that DHCP incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause DHCP clients and servers to consume resources, leading to a denial of service.

Ubuntu Security Notice USN-5626-2

Ubuntu Security Notice 5626-2 - USN-5626-1 fixed several vulnerabilities in Bind. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Yehuda Afek, Anat Bremler-Barr, and Shani Stajnrod discovered that Bind incorrectly handled large delegations. A remote attacker could possibly use this issue to reduce performance, leading to a denial of service.

Ubuntu Security Notice USN-5626-1

Ubuntu Security Notice 5626-1 - Yehuda Afek, Anat Bremler-Barr, and Shani Stajnrod discovered that Bind incorrectly handled large delegations. A remote attacker could possibly use this issue to reduce performance, leading to a denial of service. It was discovered that Bind incorrectly handled statistics requests. A remote attacker could possibly use this issue to obtain sensitive memory contents, or cause a denial of service. This issue only affected Ubuntu 22.04 LTS.

CVE-2022-2795: CVE-2022-2795: Processing large delegations may severely degrade resolver performance - Security Advisories

By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service.

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