CVE-2020-8144: 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…

PriorityP339high8.4CVSS 3.1

AVAACLPRHUINSCCHIHAH

EPSS

0.75%

50.2th percentile

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. 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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
ui	unifi_video	<= 3.9.3	—
unifi_video_controller_for_windows_7	8_10_x64	—	—
unifi_video_controller_for_windows_7	8_10_x64	—	—

CVSS provenance

nvdv3.18.4HIGHCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

nvdv2.05.2MEDIUMAV:A/AC:L/Au:S/C:P/I:P/A:P

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