UniFi Video Server v3.9.3 Improper Limitation of a Pathname to a Restricted Directory (‘Path Traversal’) Vulnerability

Summary

The UniFi Video Server v3.9.3 and prior (for Windows 7/8/10 x64) web interface Firmware Update functionality, under certain circumstances, does not validate firmware download destinations to ensure they are within the intended destination directory tree.

 

 

 

 

Credit:

The information has been provided by Vendor

The original article can be found at:https://community.ui.com/releases/Security-advisory-bulletin-006-006/3cf6264e-e0e6-4e26-a331-1d271f84673e

 


Details

It accepts a request with a URL to firmware update information. If the version field contains ..\ character sequences, the destination file path to save the firmware can be manipulated to be outside the intended destination directory tree. Fixed in UniFi Video Controller v3.10.3 and newer.

 

Vulnerable Systems:

UniFi Video Server v3.9.3 and prior

 

CVE Information:

CVE-2020-8144

Disclosure Timeline:
Published Date:4/1/2020

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