PostgreSQL before 8.3.7, 8.2.13, 8.1.17, 8.0.21, and 7.4.25 allows remote authenticated users to cause a denial of service (stack consumption and crash) by triggering a failure in the conversion of a localized error message to a client-specified encoding, as demonstrated using mismatched encoding conversion requests.
https://www.redhat.com/archives/fedora-package-announce/2009-March/msg00843.html
https://www.redhat.com/archives/fedora-package-announce/2009-March/msg00810.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6252
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10874
https://bugzilla.redhat.com/show_bug.cgi?id=488156
http://www.vupen.com/english/advisories/2009/1316
http://www.vupen.com/english/advisories/2009/0767
http://www.securitytracker.com/id?1021860
http://www.securityfocus.com/archive/1/503598/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2009-1067.html
http://www.postgresql.org/about/news.1065
http://www.openwall.com/lists/oss-security/2009/03/11/4
http://www.mandriva.com/security/advisories?name=MDVSA-2009:079
http://wiki.rpath.com/Advisories:rPSA-2009-0086
http://sunsolve.sun.com/search/document.do?assetkey=1-77-1020455.1-1
http://sunsolve.sun.com/search/document.do?assetkey=1-66-258808-1
http://secunia.com/advisories/35100
http://secunia.com/advisories/34453
http://marc.info/?l=bugtraq&m=134124585221119&w=2
http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00010.html