Home / mailings [gentoo-announce] [ GLSA 202107-26 ] runC: Container breakout
Posted on 10 July 2021
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Gentoo Linux Security Advisory GLSA 202107-26
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https://security.gentoo.org/
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Severity: Low
Title: runC: Container breakout
Date: July 10, 2021
Bugs: #790257
ID: 202107-26
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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
=================
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Package / Vulnerable / Unaffected
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1 app-emulation/runc < 1.0.0_rc95 >= 1.0.0_rc95
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
==========
[ 1 ] CVE-2021-30465
https://nvd.nist.gov/vuln/detail/CVE-2021-30465
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202107-26
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 2021 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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