Integer overflow in the ap_pregsub function in server/util.c in the Apache HTTP Server 2.0.x through 2.0.64 and 2.2.x through 2.2.21, when the mod_setenvif module is enabled, allows local users to gain privileges via a .htaccess file with a crafted SetEnvIf directive, in conjunction with a crafted HTTP request header, leading to a heap-based buffer overflow.
https://exchange.xforce.ibmcloud.com/vulnerabilities/71093
https://bugzilla.redhat.com/show_bug.cgi?id=750935
http://www.securityfocus.com/bid/50494
http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html
http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
http://www.mandriva.com/security/advisories?name=MDVSA-2012:003
http://www.fujitsu.com/global/support/software/security/products-f/interstage-201303e.html
http://www.debian.org/security/2012/dsa-2405
http://support.apple.com/kb/HT5501
http://securitytracker.com/id?1026267
http://secunia.com/advisories/48551
http://secunia.com/advisories/45793
http://rhn.redhat.com/errata/RHSA-2012-0543.html
http://rhn.redhat.com/errata/RHSA-2012-0542.html
http://rhn.redhat.com/errata/RHSA-2012-0128.html
http://marc.info/?l=bugtraq&m=134987041210674&w=2
http://marc.info/?l=bugtraq&m=133494237717847&w=2
http://marc.info/?l=bugtraq&m=133294460209056&w=2
http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
http://archives.neohapsis.com/archives/fulldisclosure/2011-11/0023.html