libicu in International Components for Unicode (ICU) 3.8.1 and earlier attempts to process backreferences to the nonexistent capture group zero (aka \0), which might allow context-dependent attackers to read from, or write to, out-of-bounds memory locations, related to corruption of REStackFrames.
https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00921.html
https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00896.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5507
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11172
https://issues.rpath.com/browse/RPL-2199
https://exchange.xforce.ibmcloud.com/vulnerabilities/39938
https://bugzilla.redhat.com/show_bug.cgi?id=429023
http://www.vupen.com/english/advisories/2008/1375/references
http://www.vupen.com/english/advisories/2008/0807/references
http://www.vupen.com/english/advisories/2008/0282
http://www.ubuntu.com/usn/usn-591-1
http://www.securityfocus.com/bid/27455
http://www.securityfocus.com/archive/1/487677/100/0/threaded
http://www.openoffice.org/security/cves/CVE-2007-5745.html
http://www.openoffice.org/security/cves/CVE-2007-4770.html
http://www.novell.com/linux/security/advisories/2008_23_openoffice.html
http://www.debian.org/security/2008/dsa-1511
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0043
http://securitytracker.com/id?1019269
http://security.gentoo.org/glsa/glsa-200805-16.xml
http://security.gentoo.org/glsa/glsa-200803-20.xml
http://secunia.com/advisories/30179
http://secunia.com/advisories/29987
http://secunia.com/advisories/29910
http://secunia.com/advisories/29852
http://secunia.com/advisories/29333
http://secunia.com/advisories/29294
http://secunia.com/advisories/29291
http://secunia.com/advisories/29242
http://secunia.com/advisories/29194
http://secunia.com/advisories/28783
http://secunia.com/advisories/28669
http://secunia.com/advisories/28615
http://secunia.com/advisories/28575
http://rhn.redhat.com/errata/RHSA-2008-0090.html
http://lists.opensuse.org/opensuse-security-announce/2008-03/msg00001.html