what you don't know can hurt you

Secunia Security Advisory 46288

Secunia Security Advisory 46288
Posted Oct 24, 2011
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A weakness has been reported in Apache HTTP Server, which can be exploited by malicious people to bypass certain security restrictions.

tags | advisory, web
MD5 | a34410ab8336e26386ef62785bc6c370

Secunia Security Advisory 46288

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TITLE:
Apache HTTP Server mod_proxy Reverse Proxy Mode Security Bypass
Weakness

SECUNIA ADVISORY ID:
SA46288

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/46288/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46288

RELEASE DATE:
2011-10-23

DISCUSS ADVISORY:
http://secunia.com/advisories/46288/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
* Last Update
* Popularity
* Comments
* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)

http://secunia.com/advisories/46288/

ONLY AVAILABLE IN CUSTOMER AREA:
* Authentication Level
* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=46288

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
* AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A weakness has been reported in Apache HTTP Server, which can be
exploited by malicious people to bypass certain security
restrictions.

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.

Successful exploitation requires the use of "ProxyPassMatch" and
"RewriteRule" configuration directives with a certain pattern match.

The weakness is reported in all 2.x versions.

SOLUTION:
Apply patch.

Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

PROVIDED AND/OR DISCOVERED BY:
Michael Jordon and David Robinson, Context Information Security Ltd.

ORIGINAL ADVISORY:
Apache:
http://mail-archives.apache.org/mod_mbox/httpd-announce/201110.mbox/browser

Context Information Security Ltd:
http://www.contextis.com/research/blog/reverseproxybypass/

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

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