Research > Zero-Day Tracker > 20110902
Apple Mac OS X Keychain Certificate Security Bypass
Date Disclosed:
9/2/2011
Date Patched:
Patch Not Yet Available
Vendor:
Apple
Affected Software:
Apple OS X 10.6.8 and prior
Description:
OS X does not properly handle the Extended Validation certificate attribute of Certificate Authority certificates. Within the Keychain, if a user has marked an Extended Validation certificate as not to be trusted, OS X will still trust it.
Severity:
Moderate
Code Execution:
No
Impact:
Certificate Spoofing
This vulnerability allows an attacker to spoof an Extended Validation certificate, for use within a man-in-the-middle attack. This would permit attackers to monitor and/or modify traffic that is normally encrypted.
Mitigation:
No mitigation has been provided.
Protection:
Links:
Status:
9.2.2011 - Public Information Released
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