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Windows 2000 ShellExecute API Buffer Overflow Vulnerability
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Secunia Advisory:
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SA9175
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Release Date:
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2003-07-03
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Last Update:
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2003-07-08
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Popularity:
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10,864 views
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Critical:
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Moderately critical
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Impact:
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DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
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Description:
A vulnerability has been reported in Windows 2000, which can be exploited by malicious people to crash applications and potentially compromise a vulnerable system.
The vulnerability is caused due to a boundary error in the API "ShellExecute" in "shell32.dll", which is used to execute programs associated with a given file type. This can be exploited by supplying a pointer referencing an overly long string (about 4000 bytes) to the "lpszFile" parameter, which will cause a buffer overflow. Any program using this API is potentially affected.
Reportedly, both browsers, email programs, and text editors have been identified as vulnerable.
The vulnerability has been reported in "shell32.dll" version 5.0.3502.6144. However, other versions may also be affected.
Solution:
Reportedly, the vulnerability has been fixed in Windows 2000 Service Pack 4:
http://www.microsoft.com/windows2000/downloads/servicepacks/sp4/default.asp
Provided and/or discovered by:
Yuu Arai and Hisayuki Shinmachi (SecureNet Service).
Original Advisory:
http://www.lac.co.jp/security/english/snsadv_e/65_e.html
Other References:
List of Security Fixes in Windows 2000 Service Pack 4:
http://support.microsoft.com/default.aspx?kbid=821665
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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