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mod_rpaf: Denial of Service


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201209-20 / mod_rpaf
Release Date September 27, 2012
Latest Revision September 27, 2012: 1
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
www-apache/mod_rpaf < 0.6 >= 0.6 All supported architectures

Related bugreports: #432406


A vulnerability in mod_rpaf may result in Denial of Service.

2.  Impact Information


mod_rpaf is a reverse proxy add forward module for backend Apache servers.


An error has been found in the way mod_rpaf handles X-Forwarded-For headers. Please review the CVE identifier referenced below for details.


A remote attacker could send a specially crafted HTTP header, possibly resulting in a Denial of Service condition.

3.  Resolution Information


There is no known workaround at this time.


All mod_rpaf users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=www-apache/mod_rpaf-0.6"

4.  References


Page updated September 27, 2012

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