[NT] Directory Traversal Vulnerability in 121 WAM! Server

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To: list@securiteam.com
Date: 12 Aug 2003 14:44:33 +0200

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  Directory Traversal Vulnerability in 121 WAM! Server
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SUMMARY

 <http://www.121software.com/121wam/server.asp> 121 WAM! Server is "a
standard FTP server for Microsoft Windows. When used in conjunction with
121 WAM! Client, it also provides your users with a complete solution to
manage their online databases including Microsoft Access, SQL Server and
MySQL. 121 WAM! makes uploading, downloading and transferring data a
simple drag and drop operation. 121 WAM! Server is the first FTP server
that supports database transfer functionality".

Due to a vulnerability in the product remote attackers can access files
that reside outside the bounding FTP root directory.

DETAILS

Vulnerable Systems:
 * 121 WAM! Server 1.0.4.0 (Possibly previous versions)

Sending the command CWD .., will not change the directory. However sending
CWD /../ allows normal users to 'hop' out of the pre-defined user root
directory, and browse the entire hard drive.

ADDITIONAL INFORMATION

The information has been provided by <mailto:peter4020@hotmail.com> Peter
Winter-Smith

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