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Apache mod_fcgid: Arbitrary code execution


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201402-09 / mod_fcgid
Release Date February 07, 2014
Latest Revision February 07, 2014: 1
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
www-apache/mod_fcgid < 2.3.9 >= 2.3.9 All supported architectures

Related bugreports: #487314


A buffer overflow in Apache mod_fcgid might allow remote attackers to execute arbitrary code or cause a Denial of Service condition.

2.  Impact Information


Apache mod_fcgid is a binary-compatible alternative to mod_fastcgi with better process management.


Apache mod_fcgid fails to perform a boundary check on user-supplied input, potentially resulting in a heap-based buffer overflow.


A remote attacker can supply a crafted input, possibly resulting in execution of arbitrary code or a Denial of Service condition.

3.  Resolution Information


There is no known workaround at this time.


All Apache mod_fcgid users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=www-apache/mod_fcgid-2.3.9"

4.  References


Page updated February 07, 2014

Summary: This is a Gentoo Linux Security Advisory

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