Title: Top Layer Attack Mitigator IPS 5500 Denial Of Service Vulnerability
Severity: MODERATE
Description:
Top Layer Attack Mitigator IPS 5500 is a hardware intrusion prevision solution. It is an inline device utilizing ASICs to achieve high performance. It is designed for multigigabit networks.
The Attack Mitigator IPS 5500 is reportedly susceptible to a denial of service vulnerability.
This vulnerability presents itself when the device is bombarded with a very high volume of HTTP traffic. This situation is made possible when the device is configured in such a manner that it is used as a "one-armed" router, as traffic would reportedly be inspected twice. In this configuration, traffic is passed to the device for inspection on one network interface, and the inspected data is returned via the same interface. This configuration might be used when the device cannot be put inline on the network.
The vendor reports that in this configuration, it is possible for the devices overload protection feature to incorrectly activate, causing a denial of service condition. Once this condition has occurred, the device is reportedly unable to process HTTP traffic.
The IPS 5500 with firmware versions prior to 3.11.014 are reported susceptible to this vulnerability.
Affected Products:
- TopLayer Attack Mitigator 5500 3.11.0.008
References:
- Top Layer: Attack Mitigator IPS Product Page
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