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Cisco Bug: CSCvr96953 - Users cannot authenticate against RADIUS/TACACS+ if custom role offered was recently modified

Last Modified

Aug 26, 2020

Products (9)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7700 6-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 2-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch

Known Affected Releases

7.3(3)D1(1)

Description (partial)

Symptom:
A Nexus device configured to authenticate remote user accounts with a AAA protocol (such as RADIUS or TACACS+) may be unable to authenticate to the device if the role provided by the RADIUS/TACACS+ server changes to or from a custom role.

When a user account encounters this condition and fails to authenticate, a syslog will appear similar to the following:

2005 Jan  1 18:08:26 Nexus %DAEMON-3-SYSTEM_MSG: Unable to create temporary user <username>. Error 0x404a000a usermod: unknown group <group-name> (100663296) - dcos_sshd[18737]

Conditions:
+++ Any Nexus device configured to authenticate remote users through a AAA protocol (such as RADIUS or TACACS+)
+++ The role offered by the RADIUS/TACACS+ server changes to/from a custom role configured on the Nexus device
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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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