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Cisco Bug: CSCuo59052 - Cisco IOS XR Software DHCPv6 Denial Of Service Vulnerability

Last Modified

Aug 07, 2018

Products (8)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco ASR 9922 Router
  • Cisco IOS XR Software
  • Cisco ASR 9010 Router
  • Cisco ASR 9904 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases

5.2.0.BASE

Description (partial)

Symptoms:
Vulnerability in DHCPv6 code of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a crash of the DHCPv6 
server process on an affected device.

The vulnerability is due to incorrect handling of malformed DHCPv6 packets. An attacker could exploit this vulnerability by sending a malformed
DHCPv6 packet to an affected device configured with DHCPv6 server functionality. An exploit could allow the attacker to cause a crash of the 
DHCPv6 process on an affected device.

Conditions:
Device configured as DHCPv6 server.
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Bug Details Include

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