Bug 392189 (CVE-2011-4317)

Summary:	<www-servers/apache-2.2.22 mod_proxy Reverse Proxy Mode Security Bypass Weakness (CVE-2011-4317)
Product:	Gentoo Security	Reporter:	Agostino Sarubbo <ago>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	minor	CC:	apache-bugs, pva
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://secunia.com/advisories/46987/
Whiteboard:	B4 [glsa]
Package list:		Runtime testing required:	---
Bug Depends on:	401761
Bug Blocks:

Description Agostino Sarubbo gentoo-dev

2011-11-27 11:41:33 UTC

From secunia security advisory at $URL:

Description:
The weakness is caused due to the mod_proxy module, when configured in reverse proxy mode, incorrectly processing certain web requests. This can be exploited to send requests to an unintended server behind the proxy via a specially crafted URL.

This is caused due to an incomplete fix for:
https://secunia.com/SA46288/
https://bugs.gentoo.org/show_bug.cgi?id=385859

Solution:
There is no patch atm.
Edit reverse proxy rules.

Comment 1 GLSAMaker/CVETool Bot gentoo-dev

2011-12-13 00:18:04 UTC

CVE-2011-4317 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4317):
  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.

Comment 2 Sean Amoss (RETIRED) gentoo-dev

2012-04-18 00:02:04 UTC

Added to existing GLSA request.

Comment 3 GLSAMaker/CVETool Bot gentoo-dev

2012-06-24 14:29:21 UTC

This issue was resolved and addressed in
 GLSA 201206-25 at http://security.gentoo.org/glsa/glsa-201206-25.xml
by GLSA coordinator Tobias Heinlein (keytoaster).