HIGH
The JavaScript garbage collector in WebKit in Apple Safari before 4.0, iPhone OS 1.0 through 2.2.1, and iPhone OS for iPod touch 1.1 through 2.2.1 does not properly handle allocation failures, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted HTML document that triggers write access to an "offset of a NULL pointer."
http://lists.apple.com/archives/security-announce/2009/jun/msg00002.html
http://lists.apple.com/archives/security-announce/2009/Jun/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
http://secunia.com/advisories/35379
http://secunia.com/advisories/36057
http://secunia.com/advisories/36062
http://secunia.com/advisories/36790
http://secunia.com/advisories/37746
http://secunia.com/advisories/43068
http://securitytracker.com/id?1022345
http://support.apple.com/kb/HT3613
http://support.apple.com/kb/HT3639
http://www.debian.org/security/2009/dsa-1950
http://www.mandriva.com/security/advisories?name=MDVSA-2009:330
http://www.securityfocus.com/bid/35260
http://www.securityfocus.com/bid/35309
http://www.ubuntu.com/usn/USN-822-1
http://www.ubuntu.com/usn/USN-836-1
http://www.ubuntu.com/usn/USN-857-1
http://www.vupen.com/english/advisories/2009/1522
http://www.vupen.com/english/advisories/2009/1621
http://www.vupen.com/english/advisories/2011/0212
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10260
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01177.html
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01196.html
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01199.html
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01200.html