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Cisco Bug: CSCte72981 - ICMPv6 Option Length field does not work in Atomic IP Advanced Engine

Last Modified

Aug 10, 2016

Products (10)

  • Cisco IPS 4200 Series Sensors
  • Cisco IPS 4255 Sensor
  • Cisco Catalyst 6500 Series Intrusion Detection System (IDSM-2) Services Module
  • Cisco IPS 4260 Sensor
  • Cisco IPS Sensor Software Version 7.0
  • Cisco Intrusion Prevention System Network Module
  • Cisco IPS 4270-20 Sensor
  • Cisco IPS 4240 Sensor
  • Cisco ASA Advanced Inspection and Prevention (AIP) Security Services Module
  • Cisco Integrated Services Routers Intrusion Prevention System Module

Known Affected Releases

7.0(2)E3

Description (partial)

Symptom:

Given an Option Length field in an ICMPv6 packet, the Atomic IP Engine does not properly fire alerts.

Conditions:

ICMPv6 packets sent to be processed on a signature for Atomic IP Advanced Engine.  Configure a custom signature with the following parameters:

Fragmented Status: Fragmented
Layer 4 Protocol: ICMPv6
ICMPv6 Option Type: Yes
ICMPv6 Option Type: 24
ICMPv6 Option Length: 32
ICMPv6 Type: 134
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Known Fixed Releases
  • Related Community Discussions
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