GLSA 201403-02: LibYAML: Arbitrary code execution

http://security.gentoo.org/

Severity:	normal
Title:	LibYAML: Arbitrary code execution
Date:	03/08/2014
Bugs:	#499920
ID:	201403-02

Synopsis

A Vulnerability in LibYAML could result in execution of arbitrary code.

Background

LibYAML is a YAML 1.1 parser and emitter written in C.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-libs/libyaml	< 0.1.5	>= 0.1.5	All supported architectures

Description

A heap-based buffer overflow flaw was found in the way libyaml parsed YAML tags.

Impact

A remote attacker could provide a specially-crafted YAML document which when parsed by LibYAML, would cause the application to crash or, potentially, execute arbitrary code with the privileges the user who is running the application.

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-0.1.5"

References

CVE-2013-6393

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201403-02.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.