TITLE:
FileCOPA FTP Server USER Command Denial of Service

SECUNIA ADVISORY ID:
SA20033

VERIFY ADVISORY:
http://secunia.com/advisories/20033/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
FileCOPA 1.x
http://secunia.com/product/6898/

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
crash the FTP server via a large number of newline characters passed
as argument to the command.

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

SOLUTION:
Filter malicious requests in a proxy or firewall with FTP filtering
capabilities.

PROVIDED AND/OR DISCOVERED BY:
Bigeazer

ORIGINAL ADVISORY:
http://blacksecurity.org/exploits/38/FILECOPA_V1.01_and_Below_Pre_Authentication_Remote_Overflow/111.html

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