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Insecure Library Loading
Moderately critical

Microsoft .NET Framework SDK ildasm Buffer Overflow

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Release Date:  2006-03-27    Last Update:  2006-04-03    Views:  17,810

Secunia Advisory SA19406

Where:

From remote

Impact:

DoS, System access

Solution Status:

Unpatched

CVE Reference(s):

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

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Microsoft .NET Framework SDK ildasm Buffer Overflow

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