Security
Headlines
HeadlinesLatestCVEs

Headline

Ubuntu Security Notice USN-6242-1

Ubuntu Security Notice 6242-1 - It was discovered that OpenSSH incorrectly handled loading certain PKCS#11 providers. If a user forwarded their ssh-agent to an untrusted system, a remote attacker could possibly use this issue to load arbitrary libraries from the user’s system and execute arbitrary code.

Packet Storm
#vulnerability#mac#ubuntu#ssh

==========================================================================
Ubuntu Security Notice USN-6242-1
July 24, 2023

openssh vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 23.04
  • Ubuntu 22.04 LTS
  • Ubuntu 20.04 LTS

Summary:

OpenSSH could be made to run programs as your login when using ssh-agent
forwarding.

Software Description:

  • openssh: secure shell (SSH) for secure access to remote machines

Details:

It was discovered that OpenSSH incorrectly handled loading certain PKCS#11
providers. If a user forwarded their ssh-agent to an untrusted system, a
remote attacker could possibly use this issue to load arbitrary libraries
from the user’s system and execute arbitrary code.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 23.04:
openssh-client 1:9.0p1-1ubuntu8.4

Ubuntu 22.04 LTS:
openssh-client 1:8.9p1-3ubuntu0.3

Ubuntu 20.04 LTS:
openssh-client 1:8.2p1-4ubuntu0.8

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6242-1
CVE-2023-38408

Package Information:
https://launchpad.net/ubuntu/+source/openssh/1:9.0p1-1ubuntu8.4
https://launchpad.net/ubuntu/+source/openssh/1:8.9p1-3ubuntu0.3
https://launchpad.net/ubuntu/+source/openssh/1:8.2p1-4ubuntu0.8

Related news

CVE-2023-48660: DSA-2023-443: Dell PowerMaxOS 5978, Dell Unisphere 360, Dell Unisphere for PowerMax, Dell Unisphere for PowerMax Virtual Appliance, Dell Solutions Enabler Virtual Appliance, and Dell PowerMax EEM Secu

Dell vApp Manger, versions prior to 9.2.4.x contain an arbitrary file read vulnerability. A remote attacker could potentially exploit this vulnerability to read arbitrary files from the target system.

CVE-2023-30994: Security Bulletin: IBM QRadar SIEM includes components with known vulnerabilities

IBM QRadar SIEM 7.5.0 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 254138

Red Hat Security Advisory 2023-5029-01

Red Hat Security Advisory 2023-5029-01 - An update is now available for Red Hat OpenShift GitOps 1.9. Issues addressed include a denial of service vulnerability.

RHSA-2023:4972: Red Hat Security Advisory: Multicluster Engine for Kubernetes 2.1.8 security updates and bug fixes

Multicluster Engine for Kubernetes 2.1.8 General Availability release images, which fix bugs 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-2023-3089: A compliance problem was found in the Red Hat OpenShift Container Platform. Red Hat discovered that, when FIPS mode was enabled, not all of the cryptographic modules in use were FIPS-validated. * CVE-2023-37466: A flaw was found in the vm2 Promise handler sanitization, which allows attackers to esc...

Red Hat Security Advisory 2023-4889-01

Red Hat Security Advisory 2023-4889-01 - The DevWorkspace Operator extends OpenShift to provide DevWorkspace support. Issues addressed include a code execution vulnerability.

RHSA-2023:4892: Red Hat Security Advisory: Migration Toolkit for Containers (MTC) 1.7.12 security and bug fix update

The Migration Toolkit for Containers (MTC) 1.7.12 is now available. 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-2023-24532: A flaw was found in the crypto/internal/nistec golang library. The ScalarMult and ScalarBaseMult methods of the P256 Curve may return an incorrect result if called with some specific unreduced scalars, such as a scalar larger than the order of the curve. This does not impact usages of crypto/ecdsa or crypto/ecdh.

RHSA-2023:4875: Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.8.1 security and bug fix updates

Red Hat Advanced Cluster Management for Kubernetes 2.8.1 General Availability release images, which provide security updates and fix bugs. 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-2023-3027: The grc-policy-propagator allows security escalation within the cluster. The propagator allows policies which contain some dynamically obtained values (instead of the policy apply a static manifest on a managed cluster) of taking advantage of cluster scoped access in a created polic...

CVE-2023-40371: Security Bulletin: AIX is vulnerable to unauthorized file access and arbitrary code execution due to OpenSSH (CVE-2023-40371 and CVE-2023-38408)

IBM AIX 7.2, 7.3, VIOS 3.1's OpenSSH implementation could allow a non-privileged local user to access files outside of those allowed due to improper access controls. IBM X-Force ID: 263476.

Red Hat Security Advisory 2023-4654-01

Red Hat Security Advisory 2023-4654-01 - Red Hat Advanced Cluster Management for Kubernetes 2.7.7 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-2023:4650: Red Hat Security Advisory: Multicluster Engine for Kubernetes 2.2.7 security updates and bug fixes

Multicluster Engine for Kubernetes 2.2.7 General Availability release images, which provide security updates and fix bugs. 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-2023-3089: A compliance problem was found in the Red Hat OpenShift Container Platform. Red Hat discovered that, when FIPS mode was enabled, not all of the cryptographic modules in use were FIPS-validated. * CVE-2023-37903: A flaw was found in the vm2 custom inspect function, which allows attackers to escape t...

Red Hat Security Advisory 2023-4575-01

Red Hat Security Advisory 2023-4575-01 - VolSync is a Kubernetes operator that enables asynchronous replication of persistent volumes within a cluster, or across clusters.

Red Hat Security Advisory 2023-4456-01

Red Hat Security Advisory 2023-4456-01 - Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.13.8. Issues addressed include an add administrator vulnerability.

Red Hat Security Advisory 2023-4428-01

Red Hat Security Advisory 2023-4428-01 - OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Issues addressed include a code execution vulnerability.

Red Hat Security Advisory 2023-4413-01

Red Hat Security Advisory 2023-4413-01 - OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Issues addressed include a code execution vulnerability.

Red Hat Security Advisory 2023-4419-01

Red Hat Security Advisory 2023-4419-01 - OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Issues addressed include a code execution vulnerability.

RHSA-2023:4428: Red Hat Security Advisory: openssh security update

An update for openssh is now available for Red Hat Enterprise Linux 6 Extended Lifecycle Support. 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-2023-38408: A vulnerability was found in OpenSSH. The PKCS#11 feature in the ssh-agent in OpenSSH has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-controlled system (the code in /usr/lib is not necessarily safe for loading into ssh-agent). This flaw allows an a...

Ubuntu Security Notice USN-6242-2

Ubuntu Security Notice 6242-2 - USN-6242-1 fixed a vulnerability in OpenSSH. This update provides the corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. It was discovered that OpenSSH incorrectly handled loading certain PKCS#11 providers. If a user forwarded their ssh-agent to an untrusted system, a remote attacker could possibly use this issue to load arbitrary libraries from the user's system and execute arbitrary code.

RHSA-2023:4382: Red Hat Security Advisory: openssh security update

An update for openssh is now available for Red Hat Enterprise Linux 7. 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-2023-38408: A vulnerability was found in OpenSSH. The PKCS#11 feature in the ssh-agent in OpenSSH has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-controlled system (the code in /usr/lib is not necessarily safe for loading into ssh-agent). This flaw allows an attacker with control of the...

RHSA-2023:4384: Red Hat Security Advisory: openssh security update

An update for openssh is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, and Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions. 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-2023-38408: A vulnerability was found in OpenSSH. The PKCS#11 feature in the ssh-agent in OpenSSH has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarde...

RHSA-2023:4383: Red Hat Security Advisory: openssh security update

An update for openssh is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions. 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-2023-38408: A vulnerability was found in OpenSSH. The PKCS#11 feature in the ssh-agent in OpenSSH has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-controlled system (the code in /usr/lib is not necessarily safe for loading into ssh-agent). This flaw al...

RHSA-2023:4381: Red Hat Security Advisory: openssh security update

An update for openssh is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions. 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-2023-38408: A vulnerability was found in OpenSSH. The PKCS#11 feature in the ssh-agent in OpenSSH has an insufficiently trustworthy search path, leading to remote code execution if an ...

Red Hat Security Advisory 2023-4329-01

Red Hat Security Advisory 2023-4329-01 - OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Issues addressed include a code execution vulnerability.

RHSA-2023:4329: Red Hat Security Advisory: openssh security update

An update for openssh 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 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-2023-38408: A vulnerability was found in OpenSSH. The PKCS#11 feature in the ssh-agent in OpenSSH has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-controlled system (the code in /usr/lib is not necessarily safe for loading into ssh-agent). This flaw allows an at...

New OpenSSH Vulnerability Exposes Linux Systems to Remote Command Injection

Details have emerged about a now-patched flaw in OpenSSH that could be potentially exploited to run arbitrary commands remotely on compromised hosts under specific conditions. "This vulnerability allows a remote attacker to potentially execute arbitrary commands on vulnerable OpenSSH's forwarded ssh-agent," Saeed Abbasi, manager of vulnerability research at Qualys, said in an analysis last week.

OpenSSH Forwarded SSH-Agent Remote Code Execution

The PKCS#11 feature in ssh-agent in OpenSSH versions prior to 9.3p2 has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-controlled system.

CVE-2023-38408: Disallow remote addition of FIDO/PKCS11 provider libraries to · openbsd/src@7bc29a9

The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-controlled system. (Code in /usr/lib is not necessarily safe for loading into ssh-agent.) NOTE: this issue exists because of an incomplete fix for CVE-2016-10009.

Packet Storm: Latest News

Microsoft Windows TOCTOU Local Privilege Escalation