CVE-2011-4317

Summary

CVECVE-2011-4317
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2011-11-30 04:05:58 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v2.0 4.3 from [email protected]

AV:N/AC:M/Au:N/C:N/I:P/A:N

Problem Types: CWE-20 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None

AV:N/AC:M/Au:N/C:N/I:P/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apache Http Server 1.3 All All All
Application Apache Http Server 1.3.0 All All All
Application Apache Http Server 1.3.1 All All All
Application Apache Http Server 1.3.1.1 All All All
Application Apache Http Server 1.3.10 All All All
Application Apache Http Server 1.3.11 All All All
Application Apache Http Server 1.3.12 All All All
Application Apache Http Server 1.3.13 All All All
Application Apache Http Server 1.3.14 All All All
Application Apache Http Server 1.3.15 All All All
Application Apache Http Server 1.3.16 All All All
Application Apache Http Server 1.3.17 All All All
Application Apache Http Server 1.3.18 All All All
Application Apache Http Server 1.3.19 All All All
Application Apache Http Server 1.3.2 All All All
Application Apache Http Server 1.3.20 All All All
Application Apache Http Server 1.3.22 All All All
Application Apache Http Server 1.3.23 All All All
Application Apache Http Server 1.3.24 All All All
Application Apache Http Server 1.3.25 All All All
Application Apache Http Server 1.3.26 All All All
Application Apache Http Server 1.3.27 All All All
Application Apache Http Server 1.3.28 All All All
Application Apache Http Server 1.3.29 All All All
Application Apache Http Server 1.3.3 All All All
Application Apache Http Server 1.3.30 All All All
Application Apache Http Server 1.3.31 All All All
Application Apache Http Server 1.3.32 All All All
Application Apache Http Server 1.3.33 All All All
Application Apache Http Server 1.3.34 All All All
Application Apache Http Server 1.3.35 All All All
Application Apache Http Server 1.3.36 All All All
Application Apache Http Server 1.3.37 All All All
Application Apache Http Server 1.3.38 All All All
Application Apache Http Server 1.3.39 All All All
Application Apache Http Server 1.3.4 All All All
Application Apache Http Server 1.3.41 All All All
Application Apache Http Server 1.3.42 All All All
Application Apache Http Server 1.3.5 All All All
Application Apache Http Server 1.3.6 All All All
Application Apache Http Server 1.3.65 All All All
Application Apache Http Server 1.3.68 All All All
Application Apache Http Server 1.3.7 All All All
Application Apache Http Server 1.3.8 All All All
Application Apache Http Server 1.3.9 All All All
Application Apache Http Server 2.0 All All All
Application Apache Http Server 2.0.28 All All All
Application Apache Http Server 2.0.28 beta All All
Application Apache Http Server 2.0.32 All All All
Application Apache Http Server 2.0.32 beta All All
Application Apache Http Server 2.0.34 beta All All
Application Apache Http Server 2.0.35 All All All
Application Apache Http Server 2.0.36 All All All
Application Apache Http Server 2.0.37 All All All
Application Apache Http Server 2.0.38 All All All
Application Apache Http Server 2.0.39 All All All
Application Apache Http Server 2.0.40 All All All
Application Apache Http Server 2.0.41 All All All
Application Apache Http Server 2.0.42 All All All
Application Apache Http Server 2.0.43 All All All
Application Apache Http Server 2.0.44 All All All
Application Apache Http Server 2.0.45 All All All
Application Apache Http Server 2.0.46 All All All
Application Apache Http Server 2.0.47 All All All
Application Apache Http Server 2.0.48 All All All
Application Apache Http Server 2.0.49 All All All
Application Apache Http Server 2.0.50 All All All
Application Apache Http Server 2.0.51 All All All
Application Apache Http Server 2.0.52 All All All
Application Apache Http Server 2.0.53 All All All
Application Apache Http Server 2.0.54 All All All
Application Apache Http Server 2.0.55 All All All
Application Apache Http Server 2.0.56 All All All
Application Apache Http Server 2.0.57 All All All
Application Apache Http Server 2.0.58 All All All
Application Apache Http Server 2.0.59 All All All
Application Apache Http Server 2.0.60 All All All
Application Apache Http Server 2.0.61 All All All
Application Apache Http Server 2.0.63 All All All
Application Apache Http Server 2.0.64 All All All
Application Apache Http Server 2.0.9 All All All
Application Apache Http Server 2.2.0 All All All
Application Apache Http Server 2.2.1 All All All
Application Apache Http Server 2.2.10 All All All
Application Apache Http Server 2.2.11 All All All
Application Apache Http Server 2.2.12 All All All
Application Apache Http Server 2.2.13 All All All
Application Apache Http Server 2.2.14 All All All
Application Apache Http Server 2.2.15 All All All
Application Apache Http Server 2.2.16 All All All
Application Apache Http Server 2.2.18 All All All
Application Apache Http Server 2.2.19 All All All
Application Apache Http Server 2.2.2 All All All
Application Apache Http Server 2.2.20 All All All
Application Apache Http Server 2.2.21 All All All
Application Apache Http Server 2.2.3 All All All
Application Apache Http Server 2.2.4 All All All
Application Apache Http Server 2.2.6 All All All
Application Apache Http Server 2.2.8 All All All
Application Apache Http Server 2.2.9 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Apache mod_proxy/mod_rewrite Bug Lets Remote Users Access Internal Servers - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Oracle Critical Patch Update - July 2012 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
HPSBMU02786 SSRT100877 rev.2 - HP System Management Homepage (SMH) Running on Linux, Windows, and VMware ESX, Remote Unauthorized Access, Disclosure of Information, Data Modification, Denial of Service (DoS), Execution of Arbitrary Code - c03360041 - HP Business Support Center af854a3a-2127-422b-91ae-364da2661108 h20000.www2.hp.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Debian -- Security Information -- DSA-2405-1 apache2 af854a3a-2127-422b-91ae-364da2661108 www.debian.org
Security Alerts - Secunia af854a3a-2127-422b-91ae-364da2661108 secunia.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Apache HTTP Server Reverse Proxy/Rewrite URL Validation Issue | Qualys Security Labs | Qualys Community af854a3a-2127-422b-91ae-364da2661108 community.qualys.com Exploit
Support / Security / Advisories / / MDVSA-2012:003 | Mandriva af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 rhn.redhat.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
'[security bulletin] HPSBMU02748 SSRT100772 rev.1 - HP OpenView Network Node Manager (OV NNM) Running' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
openSUSE-SU-2013:0248-1: moderate: update for apache2 af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
About the security content of OS X Mountain Lion v10.8.2, OS X Lion v10.7.5 and Security Update 2012-004 af854a3a-2127-422b-91ae-364da2661108 support.apple.com
openSUSE-SU-2013:0243-1: moderate: update for apache2 af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
Support / Security / Advisories / / MDVSA-2013:150 | Mandriva af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
'[security bulletin] HPSBOV02822 SSRT100966 rev.1 - HP Secure Web Server (SWS) for OpenVMS, Remote De' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info
Juniper Networks - 2013-08 Security Bulletin: Junos Space: Multiple Vulnerabilities - Knowledge Base af854a3a-2127-422b-91ae-364da2661108 kb.juniper.net
Gmane Loom af854a3a-2127-422b-91ae-364da2661108 thread.gmane.org Exploit
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Oracle Critical Patch Update - January 2015 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
Bug 756483 – CVE-2011-4317 httpd: uri scheme bypass of the reverse proxy vulnerability CVE-2011-3368 fix af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
APPLE-SA-2012-09-19-2 OS X Mountain Lion v10.8.2, OS X Lion v10.7.5 and Security Update 2012-004 af854a3a-2127-422b-91ae-364da2661108 lists.apple.com
Pony Mail! MITRE lists.apache.org
Pony Mail! MITRE lists.apache.org
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