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Windows Ftp Server Format String Vulnerability
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Secunia Advisory:
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SA10589
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Release Date:
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2004-01-09
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Popularity:
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6,201 views
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Critical:
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Highly 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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Unpatched
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| Software: | Windows Ftp Server 1.x
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Description:
Peter Winter-Smith has reported a vulnerability in Windows Ftp Server, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.
The vulnerability is caused due to a format string error when processing client data. This can e.g. be exploited by supplying a specially crafted username containing format specifiers when attempting to log in.
Successful exploitation may crash the process or potentially allow execution of arbitrary code.
The vulnerability has been reported in version 1.6 and prior.
NOTE: This is not the default FTP server included in some versions of the Microsoft Windows operating system.
Solution:
Restrict traffic to the service, allowing only trusted IP addresses to connect.
Filter malicious characters and character sequences in a FTP proxy.
Use another product.
Provided and/or discovered by:
Peter Winter-Smith
Original Advisory:
http://www.elitehaven.net/winftpserver.txt
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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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