ProFTPD NLST Command Argument Handling Remote Overflow

This script is Copyright (C) 1999-2014 Tenable Network Security, Inc.


Synopsis :

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

Description :

It was possible to crash the remote FTP server by issuing a specially
crafted command, such as 'NLST aaaXXXX%u%[...]%u%u%u%%u%653300u%n'
where 'XXXX' is replaced with four characters - ASCII values 0xDC,
0x4F, 0x07 and 0x08. This issue is known to affect ProFTPD version
1.2.0pre6, although other FTP servers may be affected as well.

It is likely that a remote attacker can leverage this issue to execute
arbitrary code on the remote host, subject to the privileges under
which the service runs.

See also :

http://archives.neohapsis.com/archives/bugtraq/1999-q3/0974.html
http://archives.neohapsis.com/archives/bugtraq/1999-q3/0995.html
http://archives.neohapsis.com/archives/bugtraq/1999-q3/1009.html

Solution :

If running ProFTPD, upgrade to version 1.2.0pre7 or later
otherwise,
contact the vendor to see if an update exists.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 7.4
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : true

Family: FTP

Nessus Plugin ID: 10191 ()

Bugtraq ID: 612

CVE ID: CVE-1999-0911