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Cisco Bug: CSCun31021 - IKEv1 unauthorized/not finished Phase 1 tears down different one

Last Modified

Apr 17, 2019

Products (1)

  • Cisco IOS

Known Affected Releases

15.4(1.1)T

Description (partial)

Symptom:
A vulnerability in IKE module of Cisco IOS and Cisco IOS XE could allow an unauthenticated, remote attacker to affect already established Security 
Associations (SA)..

The vulnerability is due to a wrong handling of rogue IKE Main Mode packets. An attacker could exploit this vulnerability by sending a crafted Main 
Mode packet to an affected device. An exploit could allow the attacker to cause dropping of valid, established IKE Security Associations on an affected 
device.

Conditions:
Device configured to process IKE request that already has a number of established security associations.
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Bug Details Include

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