Home / mailings Re: [gentoo-announce] [ GLSA 202305-19 ] Firejail: Local Privilege Escalation
Posted on 04 May 2023
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Gentoo Linux Security Advisory GLSA 202305-19
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https://security.gentoo.org/
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Severity: Normal
Title: Firejail: Local Privilege Escalation
Date: May 03, 2023
Bugs: #850748
ID: 202305-19
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Synopsis
========
A vulnerability has been discovered in Firejail which could result in
local root privilege escalation.
Background
==========
A SUID program that reduces the risk of security breaches by restricting
the running environment of untrusted applications using Linux namespaces
and seccomp-bpf.
Affected packages
=================
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Package / Vulnerable / Unaffected
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sys-apps/firejail < 0.9.70 >= 0.9.70
sys-apps/firejail-lts * N/A
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Description
===========
Firejail does not sufficiently validate the user's environment prior to
using it as the root user when using the --join command line option.
Impact
======
An unprivileged user can exploit this vulnerability to achieve local
root privileges.
Workaround
==========
System administrators can mitigate this vulnerability via adding either
"force-nonewprivs yes" or "join no" to the Firejail configuration file
in /etc/firejail/firejail.config.
Resolution
==========
Gentoo has discontinued support for sys-apps/firejail-lts. Users should
unmerge it in favor of sys-apps/firejail:
# emerge --ask --depclean --verbose "sys-apps/firejail-lts"
# emerge --ask --verbose "sys-apps/firejail"
All Firejail users should upgrade to the latest version:
# emerge --ask --oneshot --verbose ">=sys-apps/firejail-0.9.70"
References
==========
[ 1 ] CVE-2022-31214
https://nvd.nist.gov/vuln/detail/CVE-2022-31214
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202305-19
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
https://bugs.gentoo.org.
License
=======
Copyright 2023 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.
https://creativecommons.org/licenses/by-sa/2.5
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