USN-8514-2: OpenSSH vulnerability
USN-8514-1 fixed a vulnerability in OpenSSH. This update provides
the corresponding fix for Ubuntu 14.04 LTS, Ubuntu 18.04 LTS, and
Ubuntu 20.04 LTS.
Original advisory details:
It was discovered that OpenSSH incorrectly handled file permissions when
downloading files as root using the legacy scp protocol without the
preserve-mode option. An attacker could use this to install setuid or setgid
files on a system, possibly leading to privilege escalation.