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Cisco Bug: CSCup67822 - IOS-XR / DHCPv4 server denial of service vulnerability.

Last Modified

Nov 02, 2020

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

5.2.2.BASE

Description (partial)

Symptom:
DHCP process of IOS XR software may stop responding to DHCP requests on a particular interface. Messages on other interfaces
continue to be serviced as normal.

Conditions:
This can happen after the DHCP process receives a large scale of specifically malformed DHCP messages on a particular interface.
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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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