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FileCOPA FTP Server "USER" Command Denial of Service
Secunia Advisory: SA20033
Release Date: 2006-05-08
Last Update: 2006-07-24
Popularity: 5,294 views

Critical:
Moderately critical
Impact: DoS
Where: From remote
Solution Status: Vendor Patch

Software:FileCOPA 1.x

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CVE reference:CVE-2006-2254


Description:
Bigeazer has discovered a vulnerability in FileCOPA, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within the handling of the argument passed to the "USER" command. This can be exploited to cause a stack overflow via a large number of newline characters passed as argument to the command.

Successful exploitation crashes the FTP service.

The vulnerability has been confirmed in version 1.01 released 2006-04-06 and 2006-07-18.

Solution:
Update to version 1.01 released 2006-07-21.

Provided and/or discovered by:
Bigeazer

Changelog:
2006-07-19: Added additional version as vulnerable.
2006-07-24: Updated "Solution" section.

Original Advisory:
http://blacksecurity.org/exploits/38/...thentication_Remote_Overflow/111.html


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