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Cisco Bug: CSCvv98809 - C9200L crashing when accessing via webui and using a 64 Character username generated from yubikey

Last Modified

Oct 09, 2020

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)

Catalyst 9200L switch will crash when accessing via Webui and using a username with 64 character string that was generated from a 2-factor stick(yubikey)), 

The device using the 2-factor stick goes to the AAA RADIUS server which handles the authentication through the switch.
In the crashinfo, decoded traceback it can be seen that the "aaa_unconfigure_all_dns_resolved_servers" function is attempting to use Redzone memory and crashing the device when Webui is used to access the switch

configuring the switch to use an external AAA RADIUS server and generating a 64 string character username to access via Webui from from a 2-factor stick(yubikey)),
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Bug Details Include

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