Cross-site scripting in Webcam 2Way Videochat plugin for WordPress

1) Cross-site scripting

EUVDB-ID: #VU55957

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-34656

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

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 "vws_notice" function in ~/inc/requirements.php script. 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

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Webcam 2Way Videochat: 4.41.25 - 5.2.7

CPE2.3

• cpe:2.3:a:videowhisper:webcam-2way-videochat:4.41.25:*:*:*:*:wordpress:*:*
• cpe:2.3:a:videowhisper:webcam-2way-videochat:5.1.2:*:*:*:*:wordpress:*:*
• cpe:2.3:a:videowhisper:webcam-2way-videochat:5.1.6:*:*:*:*:wordpress:*:*

External links

https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34656
https://plugins.trac.wordpress.org/browser/webcam-2way-videochat/trunk/inc/requirements.php#L182

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.