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SurgeFTP Web Interface URL Decoding Denial of Service
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Secunia Advisory:
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SA10758
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Release Date:
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2004-02-02
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Last Update:
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2005-02-23
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Critical:
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Less 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: | SurgeFTP 2.x
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Description:
Dr_insane has discovered a vulnerability in SurgeFTP, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to a decoding error in the administrative web interface when processing URL encoded representations of characters in an argument. This can be exploited to crash both the interface and FTP service for about 30 seconds by sending a specially crafted request to the interface twice.
Example:
http://[victim]:7021/?%A
Successful exploitation does not require any user authentication.
The vulnerability has been confirmed in version 2.2k1 for Windows. Other versions may also be affected.
Solution:
Update to version 2.2k13 or later.
http://netwinsite.com/cgi-bin/keycgi.exe?cmd=download&product=surgeftp
Provided and/or discovered by:
Dr_insane
Changelog:
2005-02-23: Vendor fixed vulnerability in some version. Updated "Solution" section.
Original Advisory:
http://members.lycos.co.uk/r34ct/main/surge_FTP/surge-ftp.txt
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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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3 Related Secunia Security Advisories
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1. SurgeFTP "Content-Length" Denial of Service Vulnerability
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2. SurgeFTP Denial of Service and Script Insertion Vulnerability
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3. SurgeFTP "LEAK" Command Denial of Service Vulnerability
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