What is the severity of ZDI-20-539?

ZDI-20-539 is considered a critical vulnerability due to its potential for remote code execution without authentication.

How do I fix ZDI-20-539?

To fix ZDI-20-539, Cisco recommends upgrading to the latest version of UCS Director that addresses this vulnerability.

What is affected by the ZDI-20-539 vulnerability?

The ZDI-20-539 vulnerability affects installations of Cisco UCS Director where the LargeFileUploadServlet processes zip files.

Can ZDI-20-539 be exploited remotely?

Yes, ZDI-20-539 can be exploited remotely as authentication is not required to execute arbitrary code.

What impacts can ZDI-20-539 have on an organization?

The exploitation of ZDI-20-539 can lead to unauthorized access and control over affected systems, posing significant security risks.

Vulnerability/
ZDI-20-539

critical

9.8

25/2/2025

ZDI-20-539: Cisco UCS Director ApplianceStorageUtil unzip Directory Traversal Remote Code Execution Vulnerability

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.

Affected Software	Affected Version	How to fix
Cisco UCS Director

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Frequently Asked Questions

What is the severity of ZDI-20-539?
ZDI-20-539 is considered a critical vulnerability due to its potential for remote code execution without authentication.
How do I fix ZDI-20-539?
To fix ZDI-20-539, Cisco recommends upgrading to the latest version of UCS Director that addresses this vulnerability.
What is affected by the ZDI-20-539 vulnerability?
The ZDI-20-539 vulnerability affects installations of Cisco UCS Director where the LargeFileUploadServlet processes zip files.
Can ZDI-20-539 be exploited remotely?
Yes, ZDI-20-539 can be exploited remotely as authentication is not required to execute arbitrary code.
What impacts can ZDI-20-539 have on an organization?
The exploitation of ZDI-20-539 can lead to unauthorized access and control over affected systems, posing significant security risks.

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collector/zdi-advisory
source/ZDI
alias/ZDI-20-539
alias/ZDI-CAN-9586
alias/CVE-2020-3239
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/cisco
canonical/cisco ucs director

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