This vulnerability has been flagged as being a Myth/Fake.
It was reported that early/beta versions of Mac OS X created each user's Desktop folder with world-readable and world-writable permissions by default. After further testing by the security community, this was demonstrated to be untrue.
Local Access Required
Loss of Confidentiality
Myth / Fake
The database information may change without any notice. Use of the information constitutes acceptance for use in an AS IS condition, and there are NO
warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the copyright
holder or distributor (OSVDB or OSF) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.