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Last updated: 12/18/2014 3:13:05 PM

CVE Publication rate: 20.27

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Vulnerability Workload Index: 8.7
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National Cyber Awareness System

Vulnerability Summary for CVE-2011-4317

Original release date: 11/29/2011
Last revised: 10/10/2013
Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.3 (MEDIUM) (AV:N/AC:M/Au:N/C:N/I:P/A:N) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized modification

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

External Source: CONFIRM
Name: http://kb.juniper.net/JSA10585
External Source: MISC
Name: https://community.qualys.com/blogs/securitylabs/2011/11/23/apache-reverse-proxy-bypass-issue
External Source: MANDRIVA
Name: MDVSA-2012:003
External Source: SUSE
Name: openSUSE-SU-2013:0248
External Source: CONFIRM
Name: http://thread.gmane.org/gmane.comp.apache.devel/46440
External Source: SUSE
Name: openSUSE-SU-2013:0243
External Source: HP
Name: SSRT100966
External Source: SECUNIA
Name: 48551
External Source: SECTRACK
Name: 1026353
External Source: CONFIRM
Name: http://support.apple.com/kb/HT5501
External Source: REDHAT
Name: RHSA-2012:0128
External Source: APPLE
Name: APPLE-SA-2012-09-19-2
External Source: HP
Name: SSRT100877
External Source: CONFIRM
Name: http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=756483
External Source: MANDRIVA
Name: MDVSA-2013:150

Vulnerable software and versions

+ Configuration 1
+ OR
* cpe:/a:apache:http_server:2.0.61
* cpe:/a:apache:http_server:2.0.58
* cpe:/a:apache:http_server:2.0.55
* cpe:/a:apache:http_server:2.0.54
* cpe:/a:apache:http_server:2.0.57
* cpe:/a:apache:http_server:2.0.56
* cpe:/a:apache:http_server:2.0.51
* cpe:/a:apache:http_server:2.0.50
* cpe:/a:apache:http_server:2.0.53
* cpe:/a:apache:http_server:2.0.52
* cpe:/a:apache:http_server:2.0.47
* cpe:/a:apache:http_server:2.0.46
* cpe:/a:apache:http_server:2.0.49
* cpe:/a:apache:http_server:2.0.48
* cpe:/a:apache:http_server:2.0.43
* cpe:/a:apache:http_server:2.0.42
* cpe:/a:apache:http_server:2.0.45
* cpe:/a:apache:http_server:2.0.44
* cpe:/a:apache:http_server:2.0.59
* cpe:/a:apache:http_server:2.0.63
* cpe:/a:apache:http_server:2.0.9
* cpe:/a:apache:http_server:2.0.60
* cpe:/a:apache:http_server:2.0
* cpe:/a:apache:http_server:2.0.28:beta
* cpe:/a:apache:http_server:2.0.28
* cpe:/a:apache:http_server:2.0.32:beta
* cpe:/a:apache:http_server:2.0.32
* cpe:/a:apache:http_server:2.0.35
* cpe:/a:apache:http_server:2.0.34:beta
* cpe:/a:apache:http_server:2.0.37
* cpe:/a:apache:http_server:2.0.36
* cpe:/a:apache:http_server:2.0.39
* cpe:/a:apache:http_server:2.0.38
* cpe:/a:apache:http_server:2.0.41
* cpe:/a:apache:http_server:2.0.40
* cpe:/a:apache:http_server:2.0.64
+ Configuration 2
+ OR
* cpe:/a:apache:http_server:2.2.1
* cpe:/a:apache:http_server:2.2.6
* cpe:/a:apache:http_server:2.2.11
* cpe:/a:apache:http_server:2.2.9
* cpe:/a:apache:http_server:2.2.10
* cpe:/a:apache:http_server:2.2.8
* cpe:/a:apache:http_server:2.2.13
* cpe:/a:apache:http_server:2.2.3
* cpe:/a:apache:http_server:2.2.12
* cpe:/a:apache:http_server:2.2.0
* cpe:/a:apache:http_server:2.2.16
* cpe:/a:apache:http_server:2.2.15
* cpe:/a:apache:http_server:2.2.2
* cpe:/a:apache:http_server:2.2.4
* cpe:/a:apache:http_server:2.2.18
* cpe:/a:apache:http_server:2.2.14
* cpe:/a:apache:http_server:2.2.19
* cpe:/a:apache:http_server:2.2.20
* cpe:/a:apache:http_server:2.2.21
+ Configuration 3
+ OR
* cpe:/a:apache:http_server:1.3.35
* cpe:/a:apache:http_server:1.3.20
* cpe:/a:apache:http_server:1.3.34
* cpe:/a:apache:http_server:1.3.2
* cpe:/a:apache:http_server:1.3.36
* cpe:/a:apache:http_server:1.3.39
* cpe:/a:apache:http_server:1.3.10
* cpe:/a:apache:http_server:1.3.16
* cpe:/a:apache:http_server:1.3.15
* cpe:/a:apache:http_server:1.3.13
* cpe:/a:apache:http_server:1.3.19
* cpe:/a:apache:http_server:1.3.18
* cpe:/a:apache:http_server:1.3.17
* cpe:/a:apache:http_server:1.3.14
* cpe:/a:apache:http_server:1.3.41
* cpe:/a:apache:http_server:1.3.37
* cpe:/a:apache:http_server:1.3.0
* cpe:/a:apache:http_server:1.3.38
* cpe:/a:apache:http_server:1.3.24
* cpe:/a:apache:http_server:1.3.25
* cpe:/a:apache:http_server:1.3.22
* cpe:/a:apache:http_server:1.3.23
* cpe:/a:apache:http_server:1.3.27
* cpe:/a:apache:http_server:1.3.26
* cpe:/a:apache:http_server:1.3.65
* cpe:/a:apache:http_server:1.3.1
* cpe:/a:apache:http_server:1.3.11
* cpe:/a:apache:http_server:1.3.12
* cpe:/a:apache:http_server:1.3.68
* cpe:/a:apache:http_server:1.3.28
* cpe:/a:apache:http_server:1.3.29
* cpe:/a:apache:http_server:1.3.3
* cpe:/a:apache:http_server:1.3.30
* cpe:/a:apache:http_server:1.3.31
* cpe:/a:apache:http_server:1.3
* cpe:/a:apache:http_server:1.3.32
* cpe:/a:apache:http_server:1.3.33
* cpe:/a:apache:http_server:1.3.1.1
* cpe:/a:apache:http_server:1.3.4
* cpe:/a:apache:http_server:1.3.5
* cpe:/a:apache:http_server:1.3.6
* cpe:/a:apache:http_server:1.3.42
* cpe:/a:apache:http_server:1.3.8
* cpe:/a:apache:http_server:1.3.7
* cpe:/a:apache:http_server:1.3.9

* Denotes Vulnerable Software
Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)