Vulnerability identifier: #VU55448

Vulnerability risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2021-23414

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Video.js (HTML5 Video Player)
Web applications / Modules and components for CMS

Vendor: heshanlk

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the "src" attribute of track tag. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Video.js (HTML5 Video Player): 2.0.3 - 7.14.2

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External links
http://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1533588
http://github.com/videojs/video.js/commit/b3acf663641fca0f7a966525a72845af7ec5fab2
http://snyk.io/vuln/SNYK-JS-VIDEOJS-1533429
http://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1533587
http://github.com/advisories/GHSA-pp7m-6j83-m7r6
http://www.npmjs.com/advisories/1777

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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. However, proof of concept for this vulnerability is available.