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Amazon Linux 2023: CVE-2023-38408: Important priority package update for openssh

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Amazon Linux 2023: CVE-2023-38408: Important priority package update for openssh

Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
07/19/2023
Created
02/14/2025
Added
02/14/2025
Modified
02/14/2025

Description

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. 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 forwarded agent-socket on the server and the ability to write to the filesystem of the client host to execute arbitrary code with the privileges of the user running the ssh-agent.

Solution(s)

  • amazon-linux-2023-upgrade-openssh
  • amazon-linux-2023-upgrade-openssh-clients
  • amazon-linux-2023-upgrade-openssh-clients-debuginfo
  • amazon-linux-2023-upgrade-openssh-debuginfo
  • amazon-linux-2023-upgrade-openssh-debugsource
  • amazon-linux-2023-upgrade-openssh-keycat
  • amazon-linux-2023-upgrade-openssh-keycat-debuginfo
  • amazon-linux-2023-upgrade-openssh-server
  • amazon-linux-2023-upgrade-openssh-server-debuginfo
  • amazon-linux-2023-upgrade-pam-ssh-agent-auth
  • amazon-linux-2023-upgrade-pam-ssh-agent-auth-debuginfo

References

  • https://attackerkb.com/topics/cve-2023-38408
  • CVE - 2023-38408
  • https://alas.aws.amazon.com/AL2023/ALAS-2023-273.html
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