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.

Score

CVSS 2.0 4.3 Medium

Status

Modified - secalert@redhat.com

Published

2011-11-30

Last modified

2024-08-07

Weaknesses

CWE-20

Affected products

• Http Server (Apache)

References

• http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
• http://kb.juniper.net/JSA10585
• http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
• http://lists.opensuse.org/opensuse-updates/2013-02/msg00009.html
• http://lists.opensuse.org/opensuse-updates/2013-02/msg00012.html
• http://marc.info/?l=bugtraq&m=133294460209056&w=2
• http://marc.info/?l=bugtraq&m=134987041210674&w=2
• http://rhn.redhat.com/errata/RHSA-2012-0128.html
• http://secunia.com/advisories/48551
• http://support.apple.com/kb/HT5501
• http://thread.gmane.org/gmane.comp.apache.devel/46440
• http://www.debian.org/security/2012/dsa-2405
• http://www.mandriva.com/security/advisories?name=MDVSA-2012:003
• http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
• http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
• http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html
• http://www.securitytracker.com/id?1026353
• https://bugzilla.redhat.com/show_bug.cgi?id=756483
• https://community.qualys.com/blogs/securitylabs/2011/11/23/apache-reverse-proxy-bypass-issue
• https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org…
• https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org…
• https://lists.apache.org/thread.html/r05b5357d1f6bd106f41541ee7d87aafe3f5ea4dc3e9bde5ce09baff8%40%3Ccvs.httpd.apache.or…
• https://lists.apache.org/thread.html/r1d201e3da31a2c8aa870c8314623caef7debd74a13d0f25205e26f15%40%3Ccvs.httpd.apache.or…
• https://lists.apache.org/thread.html/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a%40%3Ccvs.httpd.apache.or…
• https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.or…
• https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.or…
• https://lists.apache.org/thread.html/r9b4b963760a3cb5a4a70c902f325c6c0337fe51d5b8570416f8f8729%40%3Ccvs.httpd.apache.or…
• https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.or…
• https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.or…
• https://lists.apache.org/thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.or…