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TITLE:
Golden FTP Server Pro Log Parsing Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA15156

VERIFY ADVISORY:
http://secunia.com/advisories/15156/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Golden FTP Server Pro 2.x
http://secunia.com/product/4555/

DESCRIPTION:
Reed Arvin has reported a vulnerability in Golden FTP Server Pro,
which can be exploited by malicious people to compromise a vulnerable
system.

The vulnerability is caused due to a boundary error in the log
parsing functionality when handling entries in the "gftppro.log" log
file. This can e.g. be exploited to cause a stack-based buffer
overflow by passing an overly long argument (about 336 bytes) to the
"USER" FTP command when attempting to log in.

Successful exploitation allows execution of arbitrary code, but
either requires that an administrative user afterwards attempts to
view the statistics or the FTP server is restarted. Also, to regain
normal functionality if the FTP server crashes, the malicious entry
in the "gftppro.log" file has to be removed manually.

The vulnerability has been confirmed in version 2.52. Other versions
may also be affected.

SOLUTION:
Use another product.

PROVIDED AND/OR DISCOVERED BY:
Reed Arvin

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