CVE-2021-3156

Published: 26 January 2021

Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.

Priority

High

CVSS 3 base score: 7.8

Status

Package Release Status
sudo
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 20.04 LTS (Focal Fossa)
Released (1.8.31-1ubuntu1.2)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (1.8.21p2-3ubuntu1.4)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (1.8.16-0ubuntu1.10)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (1.8.9p5-1ubuntu1.5+esm6)