Apple Security Advisory 2013-03-14-2 - Safari 6.0.3 is now available and addresses multiple security issues. These fixes address memory corruption issues and cross site scripting.
e8fb3bcee240bccc74fd00148304720bad83d31d8a9f970f1f2b7ebd82d86810
Apple Security Advisory 2013-01-28-1 - iOS 6.1 Software Update is now available and addresses multiple security vulnerabilities.
2dc7367b3d4bb04f6b00e22c62f360fcdc9286ad438bff55476607b328ce0475