Microsoft acknowledges Vista kernel elevation vulnerability
By Scott M. Fulton, III, BetaNews
December 14, 2007, 11:45 AM
What was not supposed to happen in Windows Vista apparently has: Despite a layer of protection that was supposed to prevent against processes elevating their own privileges, Microsoft now says someone found a way to do it.
A Microsoft security bulletin written earlier this week but publicized this morning cites security software engineers SkyRecon Systems as having discovered a way for processes in both 32- and 64-bit versions of Windows Vista to elevate their own privilege to administrator level.
Precise details of this latest vulnerability have not been released by either Microsoft or SkyRecon, most likely to protect the system. However, security engineers who have communicated with SkyRecon report the problem involves the Advanced Local Procedure Call (ALPC) system, which was updated for Vista to take advantage of the new kernel setup. Apparently a legacy provision for handling local procedure calls (as opposed to remote procedure calls, or RPCs) made the old-fashioned way, gave improper feedback which could be used in an exploit.
Microsoft has issued a security patch that addresses the ALPC issue.






Add a Comment (68 Comments)
BetaNews reserves the right to remove any comment at any time for any reason. Please keep your responses appropriate and on topic. Foul language and personal attacks will not be tolerated.