| Package | Affected versions | Patched versions |
|---|---|---|
| pix firewall | = 6.2.2_.111= 6.2.3_(110)= 6.3.3_(133)= 6.3.5_(112) |
Internet Key Exchange (IKE) version 1 protocol, as implemented on Cisco IOS, VPN 3000 Concentrators, and PIX firewalls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of IKE Phase-1 packets that exceed the session expiration rate. NOTE: it has been argued that this is due to a design weakness of the IKE version 1 protocol, in which case other vendors and implementations would also be affected.
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