The International Components for Unicode (ICU) library in Apple Mac OS X before 10.5.3, Red Hat Enterprise Linux 5, and other operating systems omits some invalid character sequences during conversion of some character encodings, which might allow remote attackers to conduct cross-site scripting (XSS) attacks.
lists.apple.com/archives/security-announce/2008//May/msg00001.html
secunia.com/advisories/30430
secunia.com/advisories/34290
secunia.com/advisories/34777
securitytracker.com/id?1020139
wiki.rpath.com/wiki/Advisories:rPSA-2009-0064
www.debian.org/security/2009/dsa-1762
www.redhat.com/support/errata/RHSA-2009-0296.html
www.securityfocus.com/bid/29412
www.securityfocus.com/bid/29488
www.ubuntu.com/usn/USN-747-1
www.us-cert.gov/cas/techalerts/TA08-150A.html
www.vupen.com/english/advisories/2008/1697
exchange.xforce.ibmcloud.com/vulnerabilities/42717
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10824