CVE-1999-0240

Summary

CVE-1999-0240 refers to a vulnerability in certain filters and firewalls that allow fragmented SYN packets with IP reserved bits, despite having policies against it. This issue can lead to unintended network traffic and potential security breaches. Attackers can exploit this vulnerability by crafting fragmented SYN packets and sending them to the affected device. The IP reserved bits, which should be set to zero according to the IP protocol, can be manipulated to bypass the filter or firewall's rules. This vulnerability poses a significant risk to network security and requires immediate attention from system administrators.

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