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Cisco Bug: CSCum47367 - Cisco NX-OS Software TACACS+ Command Authorization Vulnerability

Last Modified

Jul 18, 2018

Products (7)

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

Known Affected Releases

5.1(5) 6.1(4) 6.2(2)

Description (partial)

Symptom:
A vulnerability in TACACS  command authorization code of Cisco NX-OS could
allow an authenticated, local attacker to execute certain commands without
being authorized by TACACS  server.

The vulnerability is due to processing of certain commands when they are
executed in a sequence. An attacker could exploit this vulnerability by
executing multiple commands in a sequence. An exploit could allow the
attacker to execute certain commands without being authorized by TACACS 
server.

Conditions:
The vulnerability happens when the device is configured for TACACS 
command authorization.
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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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