mod_rpaf: Denial of Service

1. Gentoo Linux Security Advisory

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

Summary: This is a Gentoo Linux Security Advisory

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