[SA23653] Mac OS X BOM Privilege Escalation Vulnerability

[Secunia Security Advisories <[EMAIL PROTECTED]>]

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TITLE:
Mac OS X BOM Privilege Escalation Vulnerability

SECUNIA ADVISORY ID:
SA23653

VERIFY ADVISORY:
http://secunia.com/advisories/23653/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

OPERATING SYSTEM:
Apple Macintosh OS X
http://secunia.com/product/96/

DESCRIPTION:
A vulnerability has been reported in Mac OS X, which can be exploited
by malicious, local users to gain escalated privileges.

The problem is that permissions in BOM files are not properly
validated and can be exploited to create new permissions on specified
files and directories, or gain root privileges by creating a specially
crafted BOM file and then running "diskutil repairPermissions /".

The vulnerability is reported in version 10.4.8 . Other versions may
also be affected.

SOLUTION:
Remove the setuid bit from
/System/Library/PrivateFrameworks/DiskManagement.framework/Resources/DiskManagementTool.

PROVIDED AND/OR DISCOVERED BY:
Discovered as a 0-day and reported by LMH and Kevin Finisterre
(MOAB).

ORIGINAL ADVISORY:
http://projects.info-pull.com/moab/MOAB-05-01-2007.html

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