CVE-2022-31214
firejail - security update
7.8
HIGH
CVSS 3.1
EPSS 0.07%
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.
How to fix CVE-2022-31214
To remediate CVE-2022-31214, upgrade the affected package to a fixed version below.
- —upgrade to 0.9.64.4-2+deb11u1 or later
- —upgrade to 0.9.58.2-2+deb9u1 or later
- —upgrade to 0.9.58.2-2+deb10u3 or later
Is CVE-2022-31214 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 0.9.64.4-2+deb11u1
- from 0, < 0.9.58.2-2+deb9u1
- from 0, < 0.9.58.2-2+deb10u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |