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Gentoo Linux GLSA-201403-02: LibYAML Code Execution Risk

gentoo
Calendar Grey March 8, 2014
Scroller Gentoo
The Gentoo Security Advisory GLSA 202310-04 addresses vulnerabilities in LibYAML, which could lead to unauthorized code execution, prompting necessary user intervention.
A Vulnerability in LibYAML could result in execution of arbitrary code.

Summary

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

Topics%20covered

Topics Covered

security advisory gentoo buffer overflow code execution normal severity libyaml yaml parser

Resolution

All LibYAML users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/libyaml-0.1.5"

References

[ 1 ] CVE-2013-6393 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-6393

Availability

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

Severity: Normal
Title: LibYAML: Arbitrary code execution
Date: March 08, 2014
Bugs: #499920
ID: 201403-02

Topics%20covered

Topics Covered

security advisory gentoo buffer overflow code execution normal severity libyaml yaml parser

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.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/libyaml < 0.1.5 >= 0.1.5

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.