SRC-2020-0013 : Cisco UCS Director MyCallable call Directory Traversal Remote Code Execution Vulnerability
Cisco UCS Director and Cisco UCS Director Express for Big Data
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Cisco UCS Director and Cisco UCS Director Express for Big Data. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.
The specific flaw exists within the MyCallable class. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the tomcatu account.
Cisco has issued an update to correct this vulnerability. More details can be found at:
- 2020-01-08 - Verified and sent to Cisco PSIRT
- 2020-04-16 – Coordinated public release of advisory
This vulnerability was discovered by Steven Seeley (mr_me) of Source Incite