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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 >> Firewalls >> Remote host replies to SYN+FIN

Remote host replies to SYN+FIN

Vulnerability Assessment Summary Sends a SYN+FIN packet and expects a SYN+ACK Detailed Explanation for this Vulnerability Assessment Summary : It may be possible to bypass firewall rules Description : The remote host does not discard TCP SYN packets which have the FIN flag set. Depending on the kind of firewall you are using, a possible hacker may use this flaw to bypass its rules. See also : http://archives.neohapsis.com/archives/bugtraq/2002-10/0266.html http://www.kb.cert.org/vuls/id/464113 Solution : Contact your vendor for a patch Network Security Threat Level: None / CVSS Base Score : 0 (AV:R/AC:L/Au:NR/C:N/A:N/I:N/B:N) Networks Security ID: 7487 Vulnerability Assessment Copyright: This script is Copyright (C) 2003 Tenable Network Security

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