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Gentoo: GLSA-202112-03 Critical: Firejail Security Bypass Vulnerability

gentoo
Calendar Grey May 26, 2021
Dist Gentoo Esm H88
The Gentoo Linux Security Advisory GLSA 202109-12 identifies a critical vulnerability in GIMP that might facilitate remote code execution.
A vulnerability was discovered in Firejail which may allow local attackers to gain root privileges.

Summary

It was discovered that a flaw in Firejail's OverlayFS code allowed restricted programs to escape sandbox.

Topics%20covered

Topics Covered

security advisory Gentoo high severity security issue gentoo privilege escalation vulnerability firejail Firejail Linux namespace

Resolution

All Firejail users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=sys-apps/firejail-0.9.64.4"

References

[ 1 ] CVE-2021-26910 https://nvd.nist.gov/vuln/detail/CVE-2021-26910

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202105-19
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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.

Severity: High
Title: Firejail: Privilege escalation
Date: May 26, 2021
Bugs: #769542
ID: 202105-19

Topics%20covered

Topics Covered

security advisory Gentoo high severity security issue gentoo privilege escalation vulnerability firejail Firejail Linux namespace

Synopsis

A vulnerability was discovered in Firejail which may allow local attackers to gain root privileges.

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.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-apps/firejail < 0.9.64.4 >= 0.9.64.4

Impact

===== A local attacker could obtain arbitrary file system access via an application running within a Firejail sandbox, possibly resulting in privilege escalation.

Workaround

There is no known workaround at this time.

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