WU-FTPD fb_realpath() Function Off-by-one Overflow

This script is Copyright (C) 2003-2014 Tenable Network Security, Inc.


Synopsis :

The remote FTP server is affected by a buffer overflow vulnerability.

Description :

The remote WU-FTPD server seems to be vulnerable to an off-by-one
overflow when dealing with huge directory structures.

An attacker may exploit this flaw to obtain a shell on this host.

Note that Nessus has solely relied on the banner of the remote server
to issue this warning so it may be a false-positive, especially if the
patch has already been applied.

See also :

http://www.securiteam.com/unixfocus/5ZP010AAUI.html
http://archives.neohapsis.com/archives/bugtraq/2003-08/0042.html
http://www.nessus.org/u?9eabbd45

Solution :

Apply the realpath.patch patch.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 8.3
(CVSS2#E:F/RL:OF/RC:C)
Public Exploit Available : true

Family: FTP

Nessus Plugin ID: 11811 ()

Bugtraq ID: 8315

CVE ID: CVE-2003-0466