Mail in Apple iOS before 6 uses an S/MIME message's From address as the displayed sender address, which allows remote attackers to spoof signed content via an e-mail message in which the From field does not match the signer's identity.Referenceshttps://exchange.xforce.ibmcloud.com/vulnerabilities/78719http://lists.apple.com/archives/security-announce/2012/Sep/msg00003.htmlhttp://osvdb.org/85625http://support.apple.com/kb/HT5503
