[gentoo-announce] [ GLSA 202201-01 ] Polkit: Local privilege escalation

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – Gentoo Linux Security Advisory GLSA 202201-01 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – security.gentoo.org/ – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Severity: High Title: Polkit: Local privilege escalation Date: January 27, 2022 Bugs: #832057 ID: 202201-01
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Synopsis ========
A vulnerability in polkit could lead to local root privilege escalation.
Background ==========
polkit is a toolkit for managing policies related to unprivileged processes communicating with privileged process.
Affected packages =================
——————————————————————- Package / Vulnerable / Unaffected ——————————————————————- 1 sys-auth/polkit < 0.120-r2 >= 0.120-r2
Description ===========
Flawed input validation of arguments was discovered in the ‘pkexec’ program’s main() function.
Impact ======
A local attacker could achieve root privilege escalation.
Workaround ==========
Run the following command as root: # chmod 0755 /usr/bin/pkexec
Resolution ==========
Upgrade Polkit to a patched version.
emerge –ask –verbose “>=sys-auth/polkit-0.120-r2”
References ==========
[ 1 ] CVE-2021-4034 nvd.nist.gov/vuln/detail/CVE-2021-4034
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
security.gentoo.org/glsa/202201-01
Concerns? =========
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users’ machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at bugs.gentoo.org.
License =======
Copyright 2022 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons – Attribution / Share Alike license.
creativecommons.org/licenses/by-sa/2.5