What is the severity of ZDI-20-541?

The severity of ZDI-20-541 is critical due to the potential for remote code execution without authentication.

How do I fix ZDI-20-541?

To fix ZDI-20-541, update to the latest version of Cisco UCS Director as specified in the security advisory.

Can ZDI-20-541 be exploited without authentication?

Yes, ZDI-20-541 can be exploited without authentication, allowing attackers to execute arbitrary code remotely.

What type of systems are affected by ZDI-20-541?

ZDI-20-541 affects installations of Cisco UCS Director that process tar files through the LargeFileUploadServlet endpoint.

What impact does ZDI-20-541 have on Cisco UCS Director?

ZDI-20-541 allows remote attackers to execute arbitrary code, which can lead to a complete compromise of the affected system.

Vulnerability/
ZDI-20-541

critical

9.8

25/2/2025

ZDI-20-541: Cisco UCS Director CopyFileRunnable run Symlink Following 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 tar files by the LargeFileUploadServlet endpoint. The issue results from the lack of proper validation of a user-supplied UNIX symbolic link prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the tomcat service.

Affected Software	Affected Version	How to fix
Cisco UCS Director

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Frequently Asked Questions

What is the severity of ZDI-20-541?
The severity of ZDI-20-541 is critical due to the potential for remote code execution without authentication.
How do I fix ZDI-20-541?
To fix ZDI-20-541, update to the latest version of Cisco UCS Director as specified in the security advisory.
Can ZDI-20-541 be exploited without authentication?
Yes, ZDI-20-541 can be exploited without authentication, allowing attackers to execute arbitrary code remotely.
What type of systems are affected by ZDI-20-541?
ZDI-20-541 affects installations of Cisco UCS Director that process tar files through the LargeFileUploadServlet endpoint.
What impact does ZDI-20-541 have on Cisco UCS Director?
ZDI-20-541 allows remote attackers to execute arbitrary code, which can lead to a complete compromise of the affected system.

agent/references
agent/type
agent/softwarecombine
agent/title
agent/severity
agent/event
agent/description
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-20-541
alias/ZDI-CAN-9593
alias/CVE-2020-3247
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/cisco
canonical/cisco ucs director

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