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Clavister Information for VU#464113
| Date Notified: | |
| Date Updated: | |
| Status Summary: | Not Vulnerable |
Vendor StatementClavister Firewall: Not vulnerable.
Clavister Firewall only allows plain SYN packets to create new states, and, as such, also protects hosts behind it.
In addition, thorough packet scrubbing is performed. The default settings for packets where the SYN flag is set are:
SYN+URG: Drop and log the packet
SYN+RST: Drop and log the packet
SYN+FIN: Drop and log the packet
SYN+PSH: Strip the PSH flag and log
Although SYN+PSH is very uncommon, some TCP stacks have been observed to use them. Early versions of MacTCP is one such stack.Vendor InformationThe vendor has not provided us with any further information regarding this vulnerability.
AddendumThe CERT/CC has no additional comments at this time.
If you have feedback, comments, or additional information about this vulnerability, please send us
email.
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