From: Secunia Security Advisories (sec-advsecunia.com)
Date: Mon Dec 20 2004 - 11:38:19 CST

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TITLE:
Crystal FTP Client "LIST" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA13583

VERIFY ADVISORY:
http://secunia.com/advisories/13583/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
From remote

SOFTWARE:
Crystal FTP 2.x
http://secunia.com/product/4439/

DESCRIPTION:
Luca Ercoli has discovered a vulnerability in Crystal FTP, which can
be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error in the handling
of file extensions in response to "LIST" requests. This can be
exploited to cause a buffer overflow by e.g. tricking a user into
connecting to a malicious FTP server.

Successful exploitation may allow execution of arbitrary code.

The vulnerability has been confirmed on version 2.8. Other versions
may also be affected.

SOLUTION:
Do not connect to untrusted FTP servers.

Use another product.

PROVIDED AND/OR DISCOVERED BY:
Luca Ercoli

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