CVE-2015-6997

The X.509 certificate-trust implementation in Apple iOS before 9.1 does not recognize that the kSecRevocationRequirePositiveResponse flag implies a revocation-checking requirement, which makes it easier for man-in-the-middle attackers to spoof endpoints by leveraging access to a revoked certificate.

Score

CVSS 2.0 4.3 Medium

Status

Modified - product-security@apple.com

Published

2015-10-23

Last modified

2024-08-06

Weaknesses

CWE-254

Affected products

• Iphone Os (Apple)
• Watchos (Apple)

References

• http://lists.apple.com/archives/security-announce/2015/Dec/msg00002.html
• http://lists.apple.com/archives/security-announce/2015/Oct/msg00002.html
• http://www.securityfocus.com/bid/77268
• http://www.securitytracker.com/id/1033929
• https://support.apple.com/HT205370
• https://support.apple.com/HT205641