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[gentoo-announce] [ GLSA 201402-26 ] libssh: Arbitrary code execution

Posted on 21 February 2014
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201402-26
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http://security.gentoo.org/
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Severity: Normal
Title: libssh: Arbitrary code execution
Date: February 21, 2014
Bugs: #444147
ID: 201402-26

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Synopsis
========
Multiple vulnerabilities have been found in libssh, allowing attackers
to execute arbitrary code or cause Denial of Service.

Background
==========
libssh is a C library providing SSHv2 and SSHv1.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/libssh < 0.5.3 >= 0.5.3

Description
===========
Multiple buffer overflow, double free, and integer overflow
vulnerabilities have been discovered in libssh.

Impact
======
A remote attacker could possibly execute arbitrary code with the
privileges of the process or cause a Denial of Service condition.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All libssh users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/libssh-0.5.3"

References
==========
[ 1 ] CVE-2012-4559
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4559
[ 2 ] CVE-2012-4560
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4560
[ 3 ] CVE-2012-4561
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4561
[ 4 ] CVE-2012-4562
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4562
[ 5 ] CVE-2012-6063
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6063

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

http://security.gentoo.org/glsa/glsa-201402-26.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.

License
=======
Copyright 2014 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.

http://creativecommons.org/licenses/by-sa/2.5


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