SRC-2020-0007 : Cisco Data Center Network Manager SystemFileDAO deleteFile Directory Traversal Denial of Service Vulnerability
Data Center Network Manager
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Cisco Data Center Network Manager. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.
The specific flaw exists within the processing of requests to the deleteSystemData endpoint of the SystemFileDAO Data Access Object. When parsing the path parameter in the deleteFile method, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to delete files in the context of SYSTEM and to create a denial-of-service condition.
Cisco has issued an update to correct this vulnerability. More details can be found at:
- 2019-11-20 – Verified and sent to Cisco PSIRT
- 2020-01-03 – Coordinated public release of advisory
This vulnerability was discovered by Steven Seeley (mr_me) of Source Incite