Cisco Data Center Network Manager TrustedClientTokenValidator Hard-coded Cryptographic Key Authentication Bypass Vulnerability
Vulnerability Details
This vulnerability allows remote attackers to bypass authentication on affected installations of Cisco Data Center Network Manager.
The specific flaw exists within the processing of the dbadmin/addUser functionality. The issue results from trusting input that has been encrypted with a hard-coded and discoverable cryptographic key. An attacker can leverage this vulnerability to add new global admins to the system.
Additional Details
Cisco has issued an update to correct this vulnerability. More details can be found at:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200102-dcnm-auth-bypass
Disclosure Timeline
- 2019-08-09 - Vulnerability reported to vendor
- 2020-01-03 - Coordinated public release of advisory
Credit
Steven Seeley (mr_me) of Source Incite
