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Plug and Play Web Server Directory Traversal and Buffer Overflow
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Secunia Advisory:
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SA9778
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Release Date:
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2003-09-18
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Popularity:
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4,705 views
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Critical:
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Highly critical
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Impact:
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Exposure of system information
Exposure of sensitive information
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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| Software: | Plug and Play Web Server 1.x
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Description:
Two vulnerabilities have been reported in Plug and Play Web Server, which can be exploited by malicious people to gain knowledge of sensitive information and potentially compromise a vulnerable system.
Input supplied in HTTP requests to the web service isn't validated properly. This can be exploited to conduct trivial directory traversals by including "../" or "..\" character sequences before resource names.
Example:
http://[victim]/../../existing_file
A boundary error in the FTP service can be exploited by users, who are logged in, to cause a buffer overflow. This may potentially allow execution of arbitrary code with the privileges of the FTP service by supplying an overly long (509 bytes or more), specially crafted argument to various FTP commands.
The vulnerabilities have been confirmed in version 1.0002c. However, other versions may also be affected.
Solution:
Reportedly, the vendor is currently working on an updated version, which will be available at:
http://www.pandpsoftware.com/download.htm
Directory traversal:
Filter malicious characters in a HTTP proxy or firewall with URL filtering capabilities.
The impact of directory traversal attacks can be lessened by placing the web root on a separate drive letter.
Buffer Overflow:
Grant only trusted users access to the FTP server.
Filter overly long character sequences in a FTP proxy.
Provided and/or discovered by:
Bahaa Naamneh
Original Advisory:
Buffer Overflow:
http://bsecurity.4t.com/advisories/pandpdos.txt
Directory traversal:
http://bsecurity.4t.com/advisories/pandpdt.txt
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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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