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Gentoo Linux Security Advisory GLSA 201405-27
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http://security.gentoo.org/
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Severity: Normal
Title: LibYAML: Arbitrary code execution
Date: May 23, 2014
Bugs: #505948
ID: 201405-27
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Synopsis
========
A vulnerability in LibYAML could allow an attacker to execute arbitrary
code or cause a Denial of Service condition.
Background
==========
LibYAML is a YAML 1.1 parser and emitter written in C.
Affected packages
=================
——————————————————————-
Package / Vulnerable / Unaffected
——————————————————————-
1 dev-libs/libyaml < 0.1.6 >= 0.1.6
Description
===========
The yaml_parser_scan_uri_escapes() function does not properly expand
strings passed as input, which can result in a heap-based buffer
overflow.
Impact
======
An attacker could provide a specially-crafted YAML document, which,
when parsed by LibYAML, could result in arbitrary code execution or
cause the application to crash.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All LibYAML users should upgrade to the latest version:
# emerge –sync
# emerge –ask –oneshot –verbose “>=dev-libs/libyaml-0.1.6”
Packages which depend on this library may need to be recompiled. Tools
such as revdep-rebuild may assist in identifying these packages.
References
==========
[ 1 ] CVE-2014-2525
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-2525
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201405-27.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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