CVE-2020-3239: Cisco UCS Director ApplianceStorageUtil unzip Directory Traversal Remote Code Execution Vulnerability
Multiple vulnerabilities in the REST API of Cisco UCS Director and Cisco UCS Director Express for Big Data may allow a remote attacker to bypass authentication or conduct directory traversal attacks on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Other sources
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Cisco UCS Director. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of zip files by the LargeFileUploadServlet endpoint. 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 root.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is CVE-2020-3239?
CVE-2020-3239 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Cisco UCS Director.
How severe is CVE-2020-3239?
CVE-2020-3239 has a severity rating of 9.8, which is classified as critical.
Is authentication required to exploit CVE-2020-3239?
No, authentication is not required to exploit CVE-2020-3239.
What is the affected software for CVE-2020-3239?
The affected software for CVE-2020-3239 is Cisco UCS Director versions 6.0.0.0 to 6.7.3.0 and Cisco UCS Director Express for Big Data versions up to 3.7.3.0.
How can I fix CVE-2020-3239?
To fix CVE-2020-3239, it is recommended to update to the latest version of Cisco UCS Director or apply the necessary patches provided by Cisco.