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Gentoo: GLSA-201404-02 Normal: libproxy RCE Risk Mitigation

gentoo
Calendar Grey April 7, 2014
Scroller Gentoo
Remote execution vulnerability identified in libproxy for Gentoo systems. Immediate upgrade advised to address potential buffer overflow threats.
A buffer overflow in libproxy might allow remote attackers to execute arbitrary code.

Summary

A boundary error when processing the proxy.pac file could cause a stack-based buffer overflow.

Topics%20covered

Topics Covered

security advisory gentoo buffer overflow remote code execution libproxy

Resolution

All libproxy users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-libs/libproxy-0.4.10"

References

[ 1 ] CVE-2012-4504 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4504

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201404-02
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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: libproxy: User-assisted execution of arbitrary code
Date: April 07, 2014
Bugs: #438146
ID: 201404-02

Topics%20covered

Topics Covered

security advisory gentoo buffer overflow remote code execution libproxy

Synopsis

A buffer overflow in libproxy might allow remote attackers to execute arbitrary code.

Background

libproxy is a library for automatic proxy configuration management.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-libs/libproxy < 0.4.10 >= 0.4.10

Impact

===== A man-in-the-middle attacker could provide a specially crafted proxy.pac file on a remote server, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

Workaround

There is no known workaround at this time.