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CVE-2016-8870

8.1 · HIGH

The register method in the UsersModelRegistration class in controllers/user.php in the Users component in Joomla!

Published Nov 4, 2016CWE-20EPSS 81.14%

Overview

CVE-2016-8870 is a high-severity vulnerability. It was published on November 4, 2016 and has a CVSS 3.0 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The register method in the UsersModelRegistration class in controllers/user.php in the Users component in Joomla! before 3.6.4, when registration has been disabled, allows remote attackers to create user accounts by leveraging failure to check the Allow User Registration configuration setting.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privescRefwww.securityfocus.com/bid/93876Refwww.securitytracker.com/id/1037107Refwww.securitytracker.com/id/1037108Refblog.sucuri.net/2016/10/details-on-the-privilege-escalation-vulnerability-in-joomla.htmlRefdeveloper.joomla.org/security-centre/659-20161001-core-account-creation.htmlGitHubgithub.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcfRefmedium.com/%40showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4rRefwww.exploit-db.com/exploits/40637/Refwww.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privesc

How CyberStrike helps

Frequently asked questions

What is CVE-2016-8870?

CVE-2016-8870 is a high-severity vulnerability. It was published on November 4, 2016 and has a CVSS 3.0 base score of 8.1 (HIGH).

How severe is CVE-2016-8870?

This vulnerability has a CVSS 3.0 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-8870?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-8870?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-8870 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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