The SSLVerifySignedServerKeyExchange function in libsecurity_ssl/lib/sslKeyExchange.c in the Secure Transport feature in the Data Security component in Apple iOS 6.x before 6.1.6 and 7.x before 7.0.6, Apple TV 6.x before 6.0.2, and Apple OS X 10.9.x before 10.9.2 does not check the signature in a TLS Server Key Exchange message, which allows man-in-the-middle attackers to spoof SSL servers by (1) using an arbitrary private key for the signing step or (2) omitting the signing step.
2014-02-22T17:05:21.767
2025-04-11T00:51:21.963
Deferred
CVSSv3.1: 7.4 (HIGH)
AV:N/AC:M/Au:N/C:P/I:P/A:N
8.6
4.9
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Operating System | apple | iphone_os | < 6.1.6 | Yes |
Operating System | apple | iphone_os | < 7.0.6 | Yes |
Operating System | apple | mac_os_x | < 10.9.2 | Yes |
Operating System | apple | tvos | < 6.0.2 | Yes |