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CVE-2019-16667

8.8 · HIGH

diag_command.php in pfSense 2.4.4-p3 allows CSRF via the txtCommand or txtRecallBuffer field, as demonstrated by executing OS commands.

Published Sep 26, 2019CWE-352EPSS 54.54%

Overview

CVE-2019-16667 is a high-severity vulnerability. It was published on September 26, 2019 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

diag_command.php in pfSense 2.4.4-p3 allows CSRF via the txtCommand or txtRecallBuffer field, as demonstrated by executing OS commands. This occurs because csrf_callback() produces a "CSRF token expired" error and a Try Again button when a CSRF token is missing.

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

Refpacketstormsecurity.com/files/158614/pfSense-2.4.4-p3-Cross-Site-Request-Forgery.htmlRefpastebin.com/TEJdu9LNRefpacketstormsecurity.com/files/158614/pfSense-2.4.4-p3-Cross-Site-Request-Forgery.htmlRefpastebin.com/TEJdu9LN

How CyberStrike helps

Frequently asked questions

What is CVE-2019-16667?

CVE-2019-16667 is a high-severity vulnerability. It was published on September 26, 2019 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2019-16667?

This vulnerability has a CVSS 3.1 base score of 8.8, 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-2019-16667?

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-2019-16667?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-16667 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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