CVE-2020-8144 : Exploit Details and Defense Strategies

UniFi Video Controller (for Windows 7/8/10 x64) prior to v3.10.3 allows path traversal, potentially leading to unauthorized access.

Understanding CVE-2020-8144

What is CVE-2020-8144?

The vulnerability in UniFi Video Controller (for Windows 7/8/10 x64) versions prior to v3.10.3 allows attackers to manipulate file paths during firmware updates, leading to potential unauthorized access.

The Impact of CVE-2020-8144

This vulnerability could be exploited by attackers to save firmware files outside the intended directory tree, potentially allowing unauthorized access to sensitive system files.

Technical Details of CVE-2020-8144

Vulnerability Description

The UniFi Video Server v3.9.3 and prior (for Windows 7/8/10 x64) does not properly validate firmware download destinations, allowing attackers to manipulate file paths during firmware updates.

Affected Systems and Versions

Product: UniFi Video Controller (for Windows 7/8/10 x64)
Versions Affected: v3.9.3 and prior
Fixed Version: v3.10.3 and newer

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting specific character sequences in the version field of a firmware update request, enabling them to save firmware files outside the intended directory tree.

Mitigation and Prevention

Immediate Steps to Take

Update UniFi Video Controller to version v3.10.3 or newer to mitigate the vulnerability.
Monitor for any unauthorized access or changes in system files.

Long-Term Security Practices

Regularly update software and firmware to patch known vulnerabilities.
Implement access controls and restrictions to prevent unauthorized access to critical system files.

Patching and Updates

Ensure that all software and firmware updates are promptly applied to maintain a secure system environment.