TITLE:
Microsoft .NET Framework SDK ildasm Buffer Overflow

SECUNIA ADVISORY ID:
SA19406

VERIFY ADVISORY:
http://secunia.com/advisories/19406/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Microsoft .NET Framework 1.x
http://secunia.com/product/667/

DESCRIPTION:
A vulnerability has been discovered in Microsoft .NET Framework SDK,
which can be exploited by malicious people to cause a DoS (Denial of
Service) and potentially compromise a user's system.

The vulnerability is caused due to a boundary error within ildasm
when disassembling a DLL file. This can be exploited to cause a
heap-based buffer overflow when a specially crafted DLL is
disassembled.

The vulnerability has been confirmed in version 1.1 with SP1. Other
versions may also be affected.

NOTE: It has also been reported that assembling a (.il) file
containing a call to a function with an overly long method name using
"ilasm" will cause a buffer overflow.

SOLUTION:
Do not use ildasm to disassemble untrusted DLL files.

PROVIDED AND/OR DISCOVERED BY:
Dinis Cruz and Kerem Kusmezer

ORIGINAL ADVISORY:
http://owasp.net/forums/257/showpost.aspx
http://owasp.net/forums/234/showpost.aspx

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