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mod_fcgid: Multiple vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201207-09 / mod_fcgid
Release Date July 09, 2012
Latest Revision July 09, 2012: 1
Impact high
Exploitable local, remote
Package Vulnerable versions Unaffected versions Architecture(s)
www-apache/mod_fcgid < 2.3.7 >= 2.3.7 All supported architectures

Related bugreports: #344685, #409373


Multiple vulnerabilities have been found in mod_fcgid, allowing execution of arbitrary code or Denial of Service.

2.  Impact Information


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


Multiple vulnerabilities have been found in mod_fcgid:

  • An error in the "fcgid_header_bucket_read()" function in fcgid_bucket.c could cause a stack-based buffer overflow (CVE-2010-3872).
  • An error in the "is_spawn_allowed() function in fcgid_spawn_ctl.c prevents Apache from recognizing the FcgidMaxProcessesPerClass directive for a virtual host (CVE-2012-1181).


A local attacker could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition. Furthermore, a remote attacker could send specially crafted HTTP requests, possibly resulting in a Denial of Service condition.

3.  Resolution Information


There is no known workaround at this time.


All mod_fcgid users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=www-apache/mod_fcgid-2.3.7"

4.  References


Page updated July 09, 2012

Summary: This is a Gentoo Linux Security Advisory

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