Arch Linux Security Advisory ASA-202103-6 ========================================= Severity: Medium Date : 2021-03-13 CVE-ID : CVE-2021-28041 Package : openssh Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-1657 Summary ======= The package openssh before version 8.5p1-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 8.5p1-1. # pacman -Syu "openssh>=8.5p1-1" The problem has been fixed upstream in version 8.5p1. Workaround ========== None. Description =========== 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. Impact ====== A remote attacker with enough privileges to access the socket of the forwarding agent might be able to execute arbitrary code. References ========== https://www.openssh.com/security.html https://www.openssh.com/txt/release-8.5 https://github.com/openssh/openssh-portable/commit/e04fd6dde16de1cdc5a4d9946... https://security.archlinux.org/CVE-2021-28041