Vulmon
Amazon Linux AMI Security Advisory: ALAS-2023-1802
Advisory Release Date: 2023-08-17 11:39 Pacific
Advisory Updated Date: 2023-08-23 02:31 Pacific
Severity:
Important
Issue Overview:
The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path, leading to remote code execution if the target user's ssh-agent is forwarded to an attacker-controlled system (the code in /usr/lib is not necessarily safe for loading into ssh-agent). Exploitation can also be prevented by starting ssh-agent with an empty PKCS#11/FIDO allowlist (ssh-agent -P '') or by configuring an allowlist that contains only specific provider libraries. NOTE: this issue exists because of an incomplete fix for CVE-2016-10009. (CVE-2023-38408)
Affected Packages:
openssh
Issue Correction:
Run yum update openssh to update your system.
New Packages:
i686:
openssh-ldap-7.4p1-22.80.amzn1.i686
openssh-cavs-7.4p1-22.80.amzn1.i686
openssh-server-7.4p1-22.80.amzn1.i686
openssh-clients-7.4p1-22.80.amzn1.i686
pam_ssh_agent_auth-0.10.3-2.22.80.amzn1.i686
openssh-7.4p1-22.80.amzn1.i686
openssh-keycat-7.4p1-22.80.amzn1.i686
openssh-debuginfo-7.4p1-22.80.amzn1.i686
src:
openssh-7.4p1-22.80.amzn1.src
x86_64:
pam_ssh_agent_auth-0.10.3-2.22.80.amzn1.x86_64
openssh-7.4p1-22.80.amzn1.x86_64
openssh-debuginfo-7.4p1-22.80.amzn1.x86_64
openssh-clients-7.4p1-22.80.amzn1.x86_64
openssh-keycat-7.4p1-22.80.amzn1.x86_64
openssh-cavs-7.4p1-22.80.amzn1.x86_64
openssh-ldap-7.4p1-22.80.amzn1.x86_64
openssh-server-7.4p1-22.80.amzn1.x86_64