CVE-2022-31214

 

Published at: - 09-06-2022 06:15

Last modified: - 15-09-2022 07:15

Total changes: - 5

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://www.openwall.com/lists/oss-security/2022/06/08/10
• https://firejail.wordpress.com/download-2/release-notes/
• DSA-5167-
• [debian-lts-announce] 20220629 [SECURITY] [DLA 3061-1] firejail security update-
• FEDORA-2022-7ecd36b131-
• FEDORA-2022-827d9ce8ac-
• FEDORA-2022-e8e9b50a33-

 

Keywords

NVD

 

CVE-2022-31214

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures