Vulnerability Assessment & Network Security Forums



If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.


Home >> Browse Vulnerability Assessment Database >> FTP >> wu-ftpd S/KEY authentication overflow


Vulnerability Assessment Details

wu-ftpd S/KEY authentication overflow

Vulnerability Assessment Summary
Checks the banner of the remote wu-ftpd server

Detailed Explanation for this Vulnerability Assessment

The remote Wu-FTPd server seems to be vulnerable to a remote overflow.

This version contains a remote overflow if s/key support is enabled.
The skey_challenge function fails to perform bounds checking on the
name variable resulting in a buffer overflow.
With a specially crafted request, a possible hacker can execute arbitrary
code resulting in a loss of integrity and/or availability.

It appears that this vulnerability may be exploited prior to authentication.
It is reported that S/Key support is not enabled by default,
though some operating system distributions which ship Wu-Ftpd may have it
enabled.

*** Nessus solely relied on the banner of the remote server
*** to issue this warning, so it may be a false positive.


Solution : Upgrade to Wu-FTPd 2.6.3 when available or disable SKEY or apply the
patches available at http://www.wu-ftpd.org

Network Security Threat Level: High

Networks Security ID: 8893

Vulnerability Assessment Copyright: This script is Copyright (C) 2004 David Maciejak

Cables, Connectors

Dell PowerEdge R710 2x X5660 2.8GHz 6 Core 16GB 6x 600GB 15K SAS PERC 6/i
$1655.0
Dell PowerEdge R710 2x X5660 2.8GHz 6 Core 16GB 6x 600GB 15K SAS PERC 6/i pictureDELL POWEREDGE M630 TWO E5-2640V3 2.6GHZ 64GB 1.6TB SSD S130
$3809.0
DELL POWEREDGE M630 TWO E5-2640V3 2.6GHZ 64GB 1.6TB SSD S130 pictureDELL POWEREDGE R730 8 BAY TWO E5-2630LV4 1.8GHZ 192GB 7 X 1.2TB 10K SAS H730
$7949.0
DELL POWEREDGE R730 8 BAY TWO E5-2630LV4 1.8GHZ 192GB 7 X 1.2TB 10K SAS H730 pictureHP PROLIANT DL560 G8 SERVER FOUR E5-4603V2 2.2GHZ 384GB 5 X 300GB 10K SAS
$7039.0
HP PROLIANT DL560 G8 SERVER FOUR E5-4603V2 2.2GHZ 384GB 5 X 300GB 10K SAS picture


Discussions

No Discussions have been posted on this vulnerability.