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Research > Zero-Day Tracker > 20110918

OS X Lion Fails to Protect Users' Password Hashes

Date Disclosed:
9/18/2011

Date Patched:
10/12/2011

Vendor:
Apple

Affected Software:
Apple OS X Lion

Description:
OS X Lion contains an information disclosure vulnerability, which permits any user to access the password hashes of any other user on the system.

Severity:
Moderate

Code Execution:
No

Impact:
Information Disclosure
This vulnerability allows any user on an OS X Lion system to access the password hashes of all other users on that system.

Mitigation:
Limit regular users' access to the dscl utility:

sudo chmod 100 /usr/bin/dscl

Protection:
 

Links:

Status:
9.18.2011 - Public Information Released
10.12.2011 - Apple releases Security Update 2011-006 for Snow Leopard and Lion

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