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Vulnerability Details : CVE-2011-3368 (1 public exploit)

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 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 initial @ (at sign) character.
Publish Date : 2011-10-05 Last Update Date : 2013-02-06
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- CVSS Scores & Vulnerability Types

Cvss Score
5.0
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 20

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate
2.6
 AV:N/AC:H/Au:N/C:N/I:P/A:N 2011-09-16 2011-10-05
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2011-3368 oval:org.opensuse.security:def:20113368 unix
RHSA-2011:1391: httpd security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20111391 unix
RHSA-2011:1392: httpd security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20111392 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-3368

# Product Type Vendor Product Version Update Edition Language
1 Application Apache Http Server 1.3 Details Vulnerabilities
2 Application Apache Http Server 1.3.0 Details Vulnerabilities
3 Application Apache Http Server 1.3.1 Details Vulnerabilities
4 Application Apache Http Server 1.3.1.1 Details Vulnerabilities
5 Application Apache Http Server 1.3.2 Details Vulnerabilities
6 Application Apache Http Server 1.3.3 Details Vulnerabilities
7 Application Apache Http Server 1.3.4 Details Vulnerabilities
8 Application Apache Http Server 1.3.5 Details Vulnerabilities
9 Application Apache Http Server 1.3.6 Details Vulnerabilities
10 Application Apache Http Server 1.3.7 Details Vulnerabilities
11 Application Apache Http Server 1.3.8 Details Vulnerabilities
12 Application Apache Http Server 1.3.9 Details Vulnerabilities
13 Application Apache Http Server 1.3.10 Details Vulnerabilities
14 Application Apache Http Server 1.3.11 Details Vulnerabilities
15 Application Apache Http Server 1.3.12 Details Vulnerabilities
16 Application Apache Http Server 1.3.13 Details Vulnerabilities
17 Application Apache Http Server 1.3.14 Details Vulnerabilities
18 Application Apache Http Server 1.3.15 Details Vulnerabilities
19 Application Apache Http Server 1.3.16 Details Vulnerabilities
20 Application Apache Http Server 1.3.17 Details Vulnerabilities
21 Application Apache Http Server 1.3.18 Details Vulnerabilities
22 Application Apache Http Server 1.3.19 Details Vulnerabilities
23 Application Apache Http Server 1.3.20 Details Vulnerabilities
24 Application Apache Http Server 1.3.22 Details Vulnerabilities
25 Application Apache Http Server 1.3.23 Details Vulnerabilities
26 Application Apache Http Server 1.3.24 Details Vulnerabilities
27 Application Apache Http Server 1.3.25 Details Vulnerabilities
28 Application Apache Http Server 1.3.26 Details Vulnerabilities
29 Application Apache Http Server 1.3.27 Details Vulnerabilities
30 Application Apache Http Server 1.3.28 Details Vulnerabilities
31 Application Apache Http Server 1.3.29 Details Vulnerabilities
32 Application Apache Http Server 1.3.30 Details Vulnerabilities
33 Application Apache Http Server 1.3.31 Details Vulnerabilities
34 Application Apache Http Server 1.3.32 Details Vulnerabilities
35 Application Apache Http Server 1.3.33 Details Vulnerabilities
36 Application Apache Http Server 1.3.34 Details Vulnerabilities
37 Application Apache Http Server 1.3.35 Details Vulnerabilities
38 Application Apache Http Server 1.3.36 Details Vulnerabilities
39 Application Apache Http Server 1.3.37 Details Vulnerabilities
40 Application Apache Http Server 1.3.38 Details Vulnerabilities
41 Application Apache Http Server 1.3.39 Details Vulnerabilities
42 Application Apache Http Server 1.3.41 Details Vulnerabilities
43 Application Apache Http Server 1.3.42 Details Vulnerabilities
44 Application Apache Http Server 1.3.65 Details Vulnerabilities
45 Application Apache Http Server 1.3.68 Details Vulnerabilities
46 Application Apache Http Server 2.0 Details Vulnerabilities
47 Application Apache Http Server 2.0.9 Details Vulnerabilities
48 Application Apache Http Server 2.0.28 Beta Details Vulnerabilities
49 Application Apache Http Server 2.0.28 Details Vulnerabilities
50 Application Apache Http Server 2.0.32 Beta Details Vulnerabilities
51 Application Apache Http Server 2.0.32 Details Vulnerabilities
52 Application Apache Http Server 2.0.34 Beta Details Vulnerabilities
53 Application Apache Http Server 2.0.35 Details Vulnerabilities
54 Application Apache Http Server 2.0.36 Details Vulnerabilities
55 Application Apache Http Server 2.0.37 Details Vulnerabilities
56 Application Apache Http Server 2.0.38 Details Vulnerabilities
57 Application Apache Http Server 2.0.39 Details Vulnerabilities
58 Application Apache Http Server 2.0.40 Details Vulnerabilities
59 Application Apache Http Server 2.0.41 Details Vulnerabilities
60 Application Apache Http Server 2.0.42 Details Vulnerabilities
61 Application Apache Http Server 2.0.43 Details Vulnerabilities
62 Application Apache Http Server 2.0.44 Details Vulnerabilities
63 Application Apache Http Server 2.0.45 Details Vulnerabilities
64 Application Apache Http Server 2.0.46 Details Vulnerabilities
65 Application Apache Http Server 2.0.47 Details Vulnerabilities
66 Application Apache Http Server 2.0.48 Details Vulnerabilities
67 Application Apache Http Server 2.0.49 Details Vulnerabilities
68 Application Apache Http Server 2.0.50 Details Vulnerabilities
69 Application Apache Http Server 2.0.51 Details Vulnerabilities
70 Application Apache Http Server 2.0.52 Details Vulnerabilities
71 Application Apache Http Server 2.0.53 Details Vulnerabilities
72 Application Apache Http Server 2.0.54 Details Vulnerabilities
73 Application Apache Http Server 2.0.55 Details Vulnerabilities
74 Application Apache Http Server 2.0.56 Details Vulnerabilities
75 Application Apache Http Server 2.0.57 Details Vulnerabilities
76 Application Apache Http Server 2.0.58 Details Vulnerabilities
77 Application Apache Http Server 2.0.59 Details Vulnerabilities
78 Application Apache Http Server 2.0.60 Details Vulnerabilities
79 Application Apache Http Server 2.0.61 Details Vulnerabilities
80 Application Apache Http Server 2.0.63 Details Vulnerabilities
81 Application Apache Http Server 2.0.64 Details Vulnerabilities
82 Application Apache Http Server 2.2.0 Details Vulnerabilities
83 Application Apache Http Server 2.2.1 Details Vulnerabilities
84 Application Apache Http Server 2.2.2 Details Vulnerabilities
85 Application Apache Http Server 2.2.3 Details Vulnerabilities
86 Application Apache Http Server 2.2.4 Details Vulnerabilities
87 Application Apache Http Server 2.2.6 Details Vulnerabilities
88 Application Apache Http Server 2.2.8 Details Vulnerabilities
89 Application Apache Http Server 2.2.9 Details Vulnerabilities
90 Application Apache Http Server 2.2.10 Details Vulnerabilities
91 Application Apache Http Server 2.2.11 Details Vulnerabilities
92 Application Apache Http Server 2.2.12 Details Vulnerabilities
93 Application Apache Http Server 2.2.13 Details Vulnerabilities
94 Application Apache Http Server 2.2.14 Details Vulnerabilities
95 Application Apache Http Server 2.2.15 Details Vulnerabilities
96 Application Apache Http Server 2.2.16 Details Vulnerabilities
97 Application Apache Http Server 2.2.18 Details Vulnerabilities
98 Application Apache Http Server 2.2.19 Details Vulnerabilities
99 Application Apache Http Server 2.2.20 Details Vulnerabilities
100 Application Apache Http Server 2.2.21 Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Apache Http Server 100

- References For CVE-2011-3368

http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
APPLE APPLE-SA-2012-09-19-2
http://www-01.ibm.com/support/docview.wss?uid=nas2064c7e5f53452ff686257927003c8d42
AIXAPAR SE49723
http://lists.opensuse.org/opensuse-updates/2013-02/msg00009.html
SUSE openSUSE-SU-2013:0243
http://lists.opensuse.org/opensuse-updates/2013-02/msg00012.html
SUSE openSUSE-SU-2013:0248
http://osvdb.org/76079
OSVDB 76079
http://marc.info/?l=bugtraq&m=134987041210674&w=2
HP SSRT100966
http://seclists.org/fulldisclosure/2011/Oct/232
FULLDISC 20111005 Apache HTTP Server: mod_proxy reverse proxy exposure (CVE-2011-3368)
http://secunia.com/advisories/46288
SECUNIA 46288
http://seclists.org/fulldisclosure/2011/Oct/273
FULLDISC 20111005 Context IS Advisory - Apache Reverse Proxy Bypass Vulnerability
http://secunia.com/advisories/46414
SECUNIA 46414
http://secunia.com/advisories/48551
SECUNIA 48551
http://www.redhat.com/support/errata/RHSA-2011-1391.html
REDHAT RHSA-2011:1391
http://www.contextis.com/research/blog/reverseproxybypass/
http://www-01.ibm.com/support/docview.wss?uid=nas2b7c57b1f1035675186257927003c8d48
AIXAPAR SE49724
http://support.apple.com/kb/HT5501 CONFIRM
Exploit! http://www.exploit-db.com/exploits/17969
EXPLOIT-DB 17969 Apache mod_proxy Reverse Proxy Exposure Vulnerability PoC Author:Rodrigo Marcos Release Date:2011-10-11 (multiple) remote
http://www.mandriva.com/security/advisories?name=MDVSA-2011:144
MANDRIVA MDVSA-2011:144
http://lists.opensuse.org/opensuse-security-announce/2011-11/msg00011.html
SUSE SUSE-SU-2011:1229
http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html CONFIRM
http://svn.apache.org/viewvc?view=revision&revision=1179239 CONFIRM
http://www.securityfocus.com/bid/49957
BID 49957 Apache HTTP Server 'mod_proxy' Reverse Proxy Information Disclosure Vulnerability Release Date:2013-04-15
https://bugzilla.redhat.com/show_bug.cgi?id=740045 CONFIRM
http://www.redhat.com/support/errata/RHSA-2011-1392.html
REDHAT RHSA-2011:1392
http://www.securitytracker.com/id?1026144
SECTRACK 1026144
http://xforce.iss.net/xforce/xfdb/70336
XF apache-modproxy-information-disclosure(70336)
http://web.archiveorange.com/archive/v/ZyS0hzECD5zzb2NkvQlt
MLIST [announce] 20111005 Advisory: mod_proxy reverse proxy exposure (CVE-2011-3368)

- Metasploit Modules Related To CVE-2011-3368

Apache Reverse Proxy Bypass Vulnerability Scanner
Scan for poorly configured reverse proxy servers. By default, this module attempts to force the server to make a request with an invalid domain name. Then, if the bypass is successful, the server will look it up and of course fail, then responding with a status code 502. A baseline status code is always established and if that baseline matches your test status code, the injection attempt does not occur. "set VERBOSE true" if you are paranoid and want to catch potential false negatives. Works best against Apache and mod_rewrite


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