CVE-2011-4317 Information
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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.
Reference
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@3Ccvs.httpd.apache.org3E https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53@3Ccvs.httpd.apache.org3E https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7@3Ccvs.httpd.apache.org3E https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b@3Ccvs.httpd.apache.org3E