Vulnerability identifier: #VU52556

Vulnerability risk: Medium

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-2021-31762

CWE-ID: CWE-352

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Webmin
Web applications / Remote management & hosting panels

Vendor: Webmin

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin within the add users feature. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website, such as create a privileged user account.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Webmin: 1.973

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External links
http://github.com/electronicbots/CVE-2021-31762
http://youtu.be/qCvEXwyaF5U
http://github.com/Mesh3l911/CVE-2021-31762
http://github.com/webmin/webmin

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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.