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CVE-2019-8942

8.8 · HIGH

WordPress before 4.9.9 and 5.x before 5.0.1 allows remote code execution because an _wp_attached_file Post Meta entry can be changed to an arbitrary string, such as one ending with a .jpg?file.php…

Published Feb 20, 2019CWE-434EPSS 82.74%

Overview

CVE-2019-8942 is a high-severity vulnerability. It was published on February 20, 2019 and has a CVSS 3.0 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

WordPress before 4.9.9 and 5.x before 5.0.1 allows remote code execution because an _wp_attached_file Post Meta entry can be changed to an arbitrary string, such as one ending with a .jpg?file.php substring. An attacker with author privileges can execute arbitrary code by uploading a crafted image containing PHP code in the Exif metadata. Exploitation can leverage CVE-2019-8943.

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/152396/WordPress-5.0.0-crop-image-Shell-Upload.htmlRefwww.rapid7.com/db/modules/exploit/multi/http/wp_crop_rceRefwww.securityfocus.com/bid/107088Refblog.ripstech.com/2019/wordpress-image-remote-code-execution/Reflists.debian.org/debian-lts-announce/2019/03/msg00044.htmlRefwpvulndb.com/vulnerabilities/9222Refwww.debian.org/security/2019/dsa-4401Refwww.exploit-db.com/exploits/46511/Refwww.exploit-db.com/exploits/46662/Refpacketstormsecurity.com/files/152396/WordPress-5.0.0-crop-image-Shell-Upload.html

How CyberStrike helps

Frequently asked questions

What is CVE-2019-8942?

CVE-2019-8942 is a high-severity vulnerability. It was published on February 20, 2019 and has a CVSS 3.0 base score of 8.8 (HIGH).

How severe is CVE-2019-8942?

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-8942?

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-2019-8942?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-8942 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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