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Gentoo Linux Security Advisory 202105-33

Gentoo Linux Security Advisory 202105-33
Posted May 26, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202105-33 - Multiple vulnerabilities have been found in containerd, the worst of which could result in privilege escalation. Versions less than 1.4.4 are affected.

tags | advisory, vulnerability
systems | linux, gentoo
advisories | CVE-2020-15257, CVE-2021-21334
SHA-256 | 464048d530e7c8af9bee99459ab4f508fe39be7c1ab8c788da356d06da5b1652

Gentoo Linux Security Advisory 202105-33

Change Mirror Download
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Gentoo Linux Security Advisory GLSA 202105-33
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https://security.gentoo.org/
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Severity: High
Title: containerd: Multiple vulnerabilities
Date: May 26, 2021
Bugs: #758137, #775329
ID: 202105-33

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Synopsis
========

Multiple vulnerabilities have been found in containerd, the worst of
which could result in privilege escalation.

Background
==========

Containerd is a daemon with an API and a command line client, to manage
containers on one machine. It uses runC to run containers according to
the OCI specification.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-emulation/containerd
< 1.4.4 >= 1.4.4

Description
===========

Multiple vulnerabilities have been discovered in containerd. Please
review the CVE identifiers referenced below for details.

Impact
======

A local attacker, able to run a malicious container in the same network
namespace as the shim, could possibly escalate privileges. Furthermore,
an attacker could disclose sensitive information.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All containerd users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-emulation/containerd-1.4.4"

References
==========

[ 1 ] CVE-2020-15257
https://nvd.nist.gov/vuln/detail/CVE-2020-15257
[ 2 ] CVE-2021-21334
https://nvd.nist.gov/vuln/detail/CVE-2021-21334

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202105-33

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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