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CVE-2011-4317

Published: 29 November 2011

The mod_proxy module in the Apache HTTP Server 1.3.x through 1.3.42, 2.0.x through 2.0.64, and 2.2.x through 2.2.21, when the Revision 1179239 patch is in place, does not properly interact with use of (1) RewriteRule and (2) ProxyPassMatch pattern matches for configuration of a reverse proxy, which allows remote attackers to send requests to intranet servers via a malformed URI containing an @ (at sign) character and a : (colon) character in invalid positions. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-3368.

Notes

AuthorNote
mdeslaur
the following commit introduces the apr_uri functionnality
required for the vulnerability to work:
http://svn.apache.org/viewvc?view=revision&revision=594624

Priority

Medium

Status

Package Release Status
apache2
Launchpad, Ubuntu, Debian
upstream Needs triage

hardy
Released (2.2.8-1ubuntu0.23)
lucid
Released (2.2.14-5ubuntu8.8)
maverick
Released (2.2.16-1ubuntu3.5)
natty
Released (2.2.17-1ubuntu1.5)
oneiric
Released (2.2.20-1ubuntu1.2)
Patches:
upstream: http://svn.apache.org/viewvc?view=revision&revision=1235443