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Pi3Web ISAPI Requests Handling Denial of Service Vulnerability
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Secunia Advisory:
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SA32696
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Release Date:
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2008-11-14
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Last Update:
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2008-12-05
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Popularity:
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1,270 views
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Critical:
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Moderately critical
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Impact:
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DoS
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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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| Software: | Pi3Web 2.x
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Description:
Hamid Ebadi has discovered a vulnerability in Pi3Web, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an error when handling HTTP requests for files placed in the "ISAPI" directory. This can be exploited to hang the server via multiple HTTP requests for invalid DLLs placed in the affected directory (i.e. install.daf, readme.daf, or users.txt).
Successful exploitation requires that Pi3Web is installed as a Desktop application.
The vulnerability is confirmed in version 2.0.3 PL2 on Windows. Prior versions may also be affected.
Solution:
Apply PL3.
http://downloads.sourceforge.net/pi3web/Pi3Web-x86Win32-2_0_3-pl3.zip
Provided and/or discovered by:
Hamid Ebadi, Amirkabir University CSIRT Laboratory
Changelog:
2008-12-04: Updated "Solution" section.
2008-12-05: Updated "Solution" section due to the release of PL3.
Original Advisory:
http://milw0rm.com/exploits/7109
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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.
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