ArchLinux: 202103-6: openssh: arbitrary code execution
Summary
ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.
Resolution
Upgrade to 8.5p1-1.
# pacman -Syu "openssh>=8.5p1-1"
The problem has been fixed upstream in version 8.5p1.
References
https://www.openssh.com/security.html https://www.openssh.com/txt/release-8.5 https://github.com/openssh/openssh-portable/commit/e04fd6dde16de1cdc5a4d9946397ff60d96568db https://security.archlinux.org/CVE-2021-28041
Workaround
None.