Vulnerability identifier: #VU57636

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-4229

CWE-ID: CWE-506

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
UAParser.js
Web applications / JS libraries

Vendor: Faisal Salman

Description

The vulnerability allows a remote attacker to gain unauthorized access to the application.

The vulnerability exists due to presence of embedded malicious functionality in the application code (aka backdoor) that allows a remote attacker to gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

UAParser.js: 0.7.29 - 1.0.0

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External links
http://github.com/faisalman/ua-parser-js/issues/536
http://github.com/advisories/GHSA-pjwm-rvh2-c87w

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.