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.
CVSS Severity (version 2.0):
Impact Subscore: 4.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized modification; Allows disruption of service
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