This script is Copyright (C) 2004-2014 Andrey I. Zakharov and John Lampe
Firewalling rules may be circumvented.
The remote host seems vulnerable to a bug wherein a remote attacker
can circumvent the firewall by setting the ECE bit within the TCP
flags field. At least one firewall (ipfw) is known to exhibit this
sort of behavior.
Known vulnerable systems include all FreeBSD 3.x ,4.x, 3.5-STABLE, and
If you are running FreeBSD 3.X, 4.x, 3.5-STABLE, 4.2-STABLE, upgrade
your firewall. If you are not running FreeBSD, contact your firewall
vendor for a patch.
Risk factor :
High / CVSS Base Score : 7.5
CVSS Temporal Score : 6.2
Public Exploit Available : true
Nessus Plugin ID: 12118 (ece_flag.nasl)
Bugtraq ID: 2293
CVE ID: CVE-2001-0183
Upgrade to Nessus Professional today!
Start your free Nessus Cloud trial now!
Begin Free Trial
The cookie settings on this website are set to 'allow all cookies' to give you the very best website experience. If you continue without changing these settings, you consent to this - but if you want, you can opt out of all cookies by clicking below.