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 >> Denial of Service >> Symantec Firewall TCP Options DoS

Vulnerability Assessment Details

Symantec Firewall TCP Options DoS

Vulnerability Assessment Summary
Check for TCP options bug on the remote host

Detailed Explanation for this Vulnerability Assessment

The remote system appears vulnerable to an invalid Options field
within a TCP packet. At least one vendor firewall (Symantec) has
been reported prone to such a bug. A possible hacker, utilizing this flaw,
would be able to remotely shut down the remote firewall (stopping all
network-based transactions) by sending a single packet to any port.

See also :
http://www.osvdb.org/displayvuln.php?osvdb_id=5596
http://www.eeye.com/html/Research/Advisories/AD20040423.html

Network Security Threat Level: High

Networks Security ID: 10204, 10334, 10335

Vulnerability Assessment Copyright: This script is (C) 2004 Tenable Network Security

Cables, Connectors