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Research > Zero-Day Tracker > 20110918

OS X Lion Fails to Protect Users' Password Hashes

Date Disclosed:

Date Patched:


Affected Software:
Apple OS X Lion

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


Code Execution:

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.

Limit regular users' access to the dscl utility:

sudo chmod 100 /usr/bin/dscl



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

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