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Cisco Bug: CSCuq95565 - ipv6_io crash with malformed IPv6 packet

Last Modified

Aug 06, 2018

Products (7)

  • Cisco Carrier Routing System
  • Cisco ASR 9922 Router
  • Cisco ASR 9010 Router
  • Cisco ASR 9904 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases

5.2.1.BASE

Description (partial)

Symptom:
A vulnerability in ipv6 processing of Cisco IOS XR could allow an unauthenticated, remote attacker to cause a reload of the ipv6_io service.

The vulnerability is due to improper processing of malformed IPv6 packet by a device configured to process such packets. An attacker could exploit this vulnerability 
by sending a malformed IPv6 packet to be processed by a device that is configured for IPv6. An exploit could allow the attacker to cause a reload of the ipv6_io 
service.

Conditions:
Cisco IOS XR device is configured to process IPv6 protocol packets.
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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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