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

Multicluster Engine for Kubernetes 2.0.9 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 o...

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.

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.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 ho...

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.

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 ...

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 - 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.

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...

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...

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 - 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.

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. […]

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. […]

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 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.

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.

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 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 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.