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CVE-2022-31214

Status Candidate

Overview

A Privilege Context Switching issue was discovered in join.c in Firejail 0.9.68. By crafting a bogus Firejail container that is accepted by the Firejail setuid-root program as a join target, a local attacker can enter an environment in which the Linux user namespace is still the initial user namespace, the NO_NEW_PRIVS prctl is not activated, and the entered mount namespace is under the attacker's control. In this way, the filesystem layout can be adjusted to gain root privileges through execution of available setuid-root binaries such as su or sudo.

Related Files

Gentoo Linux Security Advisory 202305-19
Posted May 3, 2023
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202305-19 - A vulnerability has been discovered in Firejail which could result in local root privilege escalation.

tags | advisory, local, root
systems | linux, gentoo
advisories | CVE-2022-31214
SHA-256 | a1cc5fd4c53d65e90316083ec113adeb3139a95bfa06da605b2b15ba54807504
Download | Favorite | View
Debian Security Advisory 5167-1
Posted Jun 28, 2022
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5167-1 - Matthias Gerstner discovered that the --join option of Firejail, a sandbox to restrict an application environment, was susceptible to local privilege escalation to root.

tags | advisory, local, root
systems | linux, debian
advisories | CVE-2022-31214
SHA-256 | e1fe9a48f76b3f99e79dd819199b64ca618e956c2df4de52b08ee9465697cfb0
Download | Favorite | View
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