Cisco Intrusion Prevention System (IPS) platforms that have gigabit network interfaces installed and are deployed in inline mode contain a denial of service vulenrability in the handling of jumbo Ethernet frames. This vulnerability may lead to a kernel panic that requires a power cycle to recover platform operaiton. The risk is MEDIUM. Successful exploitation of the vulnerability may result in a network denial of service condition. A power cycle is required to recover operations. An attacker may be able to evade access controls and detection of malicious activity int he case of Cisco IPS 4260-4270 platforms that have hardware bypass configured to pass traffic in the event of a kernel panic.


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