Dave,
I know this my be a little aside from your post...
Where can one obtain the Interface UUID's for Microsoft products?
-----Original Message-----
From: Dave Korn [mailto:davek_throwaway@hotmail.com]
Sent: Monday, October 06, 2003 9:30 PM
To: vuln-dev@securityfocus.com; full-disclosure@lists.netsys.com
Cc: ivegotta@tombom.co.uk
Subject: I've found the Allchin bug.
[Refs: http://www.avet.com.pl/pipermail/bugdev/2002-August/000137.html
http://www.eweek.com/article2/0,3959,5264,00.asp
http://theregister.co.uk/content/archive/25194.html
]
Nope. You're wrong. He wasn't referring to windows message queues,
he
was referring to MSMQ. You'll find that MSMQ has GUID
Interface UUID: 77df7a80-f298-11d0-8358-00a024c480a8
Interface Ver: 1
Interface Ver Minor: 0
and that opnums 6, 7 and 8 are quite clearly MQLocateBegin, MQLocateNext
and
MQLocateEnd. Try passing an overly-long string as an MQRESTRICTION to
the
MQLocateBegin function, and you'll find a unicode heap overflow in
mqsvc.exe
that lets you overwrite an arbitrary address with an arbitrary long.
You'll also find that this works in w2k sp2, and not in sp4; I haven't
tested sp3 yet. Looks like they quietly fixed it up without any great
publicity.....
If anyone needs further convincing, I'll tidy up and post my p-o-c
code,
but I think it's pretty clear from his words that he meant MSMQ and not
the
underlying win32 api.
DaveK
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