The CUPS service on multiple platforms allows remote attackers to cause a denial of service (service hang) via a "partially-negotiated" SSL connection, which prevents other requests from being accepted.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11046
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=232243
http://www.vupen.com/english/advisories/2007/0949
http://www.vupen.com/english/advisories/2007/0930
http://www.us-cert.gov/cas/techalerts/TA07-072A.html
http://www.securitytracker.com/id?1017750
http://www.securityfocus.com/bid/23127
http://www.securityfocus.com/bid/22948
http://www.securityfocus.com/archive/1/463846/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2007-0123.html
http://www.mandriva.com/security/advisories?name=MDKSA-2007:086
http://support.avaya.com/elmodocs2/security/ASA-2007-194.htm
http://security.gentoo.org/glsa/glsa-200703-28.xml
http://secunia.com/advisories/26413
http://secunia.com/advisories/26083
http://secunia.com/advisories/25497
http://secunia.com/advisories/25119
http://secunia.com/advisories/24895
http://secunia.com/advisories/24878
http://secunia.com/advisories/24660
http://secunia.com/advisories/24530
http://secunia.com/advisories/24517
http://secunia.com/advisories/24479
http://lists.apple.com/archives/security-announce/2007/Mar/msg00002.html