VDB-152680 · CVE-2020-8144 · GCVE-0-2020-8144

UniFi Video Server up to 3.9.3 Web Interface Firmware Update Version path traversal

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.8	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in UniFi Video Server up to 3.9.3. Affected by this vulnerability is an unknown functionality of the component Web Interface Firmware Update. Executing a manipulation of the argument Version with the input ..\ can lead to path traversal. This vulnerability is registered as CVE-2020-8144. The attack requires access to the local network. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in UniFi Video Server up to 3.9.3 and classified as critical. This vulnerability affects an unknown part of the component Web Interface Firmware Update. The manipulation of the argument version with the input value ..\ leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published 04/01/2020 (Website). The advisory is shared for download at community.ui.com. This vulnerability was named CVE-2020-8144 since 01/28/2020. The exploitation appears to be easy. The attack needs to be done within the local network. A single authentication is necessary for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 3.10.3 eliminates this vulnerability.

Similar entries are available at VDB-152681 and VDB-152682. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

UniFi Video Server

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.4
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: UniFi Video Server 3.10.3

Timelineinfo

01/28/2020 🔍
04/01/2020 +64 days 🔍
04/02/2020 +1 days 🔍
10/07/2020 +188 days 🔍

Sourcesinfo

Advisory: community.ui.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-8144 (🔍)
GCVE (CVE): GCVE-0-2020-8144
GCVE (VulDB): GCVE-100-152680
See also: 🔍

Entryinfo

Created: 04/02/2020 13:24
Updated: 10/07/2020 07:58
Changes: 04/02/2020 13:24 (41), 04/02/2020 13:29 (17), 10/07/2020 07:58 (1)
Complete: 🔍
Cache ID: 216::103

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