CVE-2015-6997

medium

Description

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.

References

https://support.apple.com/HT205641

https://support.apple.com/HT205370

http://www.securitytracker.com/id/1033929

http://www.securityfocus.com/bid/77268

http://lists.apple.com/archives/security-announce/2015/Oct/msg00002.html

http://lists.apple.com/archives/security-announce/2015/Dec/msg00002.html

Details

Source: Mitre, NVD

Published: 2015-10-23

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Severity: Medium