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libproxy: User-assisted execution of arbitrary code


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201404-02 / libproxy
Release Date April 07, 2014
Latest Revision April 07, 2014: 1
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-libs/libproxy < 0.4.10 >= 0.4.10 All supported architectures

Related bugreports: #438146


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

2.  Impact Information


libproxy is a library for automatic proxy configuration management.


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


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.

3.  Resolution Information


There is no known workaround at this time.


All libproxy users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-libs/libproxy-0.4.10"

4.  References


Page updated April 07, 2014

Summary: This is a Gentoo Linux Security Advisory

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