GLSA 202107-26: runC: Container breakout

http://security.gentoo.org/

Severity:	low
Title:	runC: Container breakout
Date:	07/10/2021
Bugs:	#790257
ID:	202107-26

Synopsis

A vulnerability has been found in runC which could result in privilege escalation.

Background

runC is a CLI tool for spawning and running containers according to the OCI specification.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-emulation/runc	< 1.0.0_rc95	>= 1.0.0_rc95	All supported architectures

Description

A vulnerability in runC could allow an attacker to achieve privilege escalation if specific mount configuration prerequisites are satisfied.

Impact

An attacker may be able to escalation privileges to gain access to the host system.

Workaround

There is no known workaround at this time.

Resolution

All runC users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-emulation/runc-1.0.0_rc95"

References

CVE-2021-30465

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202107-26.xml

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.