Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 524
Alerts This Week
Warning Icon 1 524

Gentoo: GLSA-201405-27 Normal: LibYAML Code Execution Threat

gentoo
Calendar Grey May 23, 2014
Scroller Gentoo
A vulnerability in LibYAML found in Gentoo may allow an assailant to run unauthorized commands, threatening system integrity. Immediate update is crucial!
A vulnerability in LibYAML could allow an attacker to execute arbitrary code or cause a Denial of Service condition.

Summary

The yaml_parser_scan_uri_escapes() function does not properly expand strings passed as input, which can result in a heap-based buffer overflow.

Topics%20covered

Topics Covered

security advisory gentoo code execution arbitrary code Denial of Service normal level

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: https://security.gentoo.org/glsa/201405-27
style>.gentoo_availability{display:block;}

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: May 23, 2014
Bugs: #505948
ID: 201405-27

Topics%20covered

Topics Covered

security advisory gentoo code execution arbitrary code Denial of Service normal level

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.

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/libyaml < 0.1.6 >= 0.1.6

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.