In Sudo before 1.8.28, an attacker with access to a Runas ALL sudoer account can bypass certain policy blacklists and session PAM modules, and can cause incorrect logging, by invoking sudo with a crafted user ID. For example, this allows bypass of !root configuration, and USER logging, for a "sudo -u \#$((0xffffffff))" command.
Publication date: Thu, 17 Oct 2019 23:15:00 +0000