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Red Hat Security Advisory 2024-1130-03
Red Hat Security Advisory 2024-1130-03 - An update for openssh is now available for Red Hat Enterprise Linux 9. Issues addressed include a code execution vulnerability.
The following advisory data is extracted from:https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_1130.jsonRed Hat officially shut down their mailing list notifications October 10, 2023. Due to this, Packet Storm has recreated the below data as a reference point to raise awareness. It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.- Packet Storm Staff====================================================================Red Hat Security AdvisorySynopsis: Moderate: openssh security updateAdvisory ID: RHSA-2024:1130-03Product: Red Hat Enterprise LinuxAdvisory URL: https://access.redhat.com/errata/RHSA-2024:1130Issue date: 2024-03-05Revision: 03CVE Names: CVE-2023-48795====================================================================Summary: An update for openssh 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.Description: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.Security Fix(es):* ssh: Prefix truncation attack on Binary Packet Protocol (BPP) (CVE-2023-48795)* openssh: potential command injection via shell metacharacters (CVE-2023-51385)For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.Solution:https://access.redhat.com/articles/11258CVEs:CVE-2023-48795References:https://access.redhat.com/security/updates/classification/#moderatehttps://bugzilla.redhat.com/show_bug.cgi?id=2254210https://bugzilla.redhat.com/show_bug.cgi?id=2255271Related news
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Ubuntu Security Notice 6585-1 - Fabian Bäumer, Marcus Brinkmann, Joerg Schwenk discovered that the SSH protocol was vulnerable to a prefix truncation attack. If a remote attacker was able to intercept SSH communications, extension negotiation messages could be truncated, possibly leading to certain algorithms and features being downgraded. This issue is known as the Terrapin attack. This update adds protocol extensions to mitigate this issue.
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Ubuntu Security Notice 6560-2 - USN-6560-1 fixed several vulnerabilities in OpenSSH. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Fabian Bäumer, Marcus Brinkmann, Joerg Schwenk discovered that the SSH protocol was vulnerable to a prefix truncation attack. If a remote attacker was able to intercept SSH communications, extension negotiation messages could be truncated, possibly leading to certain algorithms and features being downgraded. This issue is known as the Terrapin attack. This update adds protocol extensions to mitigate this issue.
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Security researchers from Ruhr University Bochum have discovered a vulnerability in the Secure Shell (SSH) cryptographic network protocol that could allow an attacker to downgrade the connection's security by breaking the integrity of the secure channel. Called Terrapin (CVE-2023-48795, CVSS score: 5.9), the exploit has been described as the "first ever practically exploitable prefix
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Gentoo Linux Security Advisory 202312-17 - Multiple vulnerabilities have been discovered in OpenSSH, the worst of which could lead to code execution. Versions greater than or equal to 9.6_p1 are affected.
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