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CVE-2019-11043

8.7 · HIGHActively Exploited

In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the spac…

Published Oct 28, 2019CWE-120EPSS 99.75%

Overview

CVE-2019-11043 is a high-severity vulnerability. It was published on October 28, 2019 and has a CVSS 3.1 base score of 8.7 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the space reserved for FCGI protocol data, thus opening the possibility of remote code execution.

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

Reflists.opensuse.org/opensuse-security-announce/2019-11/msg00011.htmlReflists.opensuse.org/opensuse-security-announce/2019-11/msg00014.htmlRefpacketstormsecurity.com/files/156642/PHP-FPM-7.x-Remote-Code-Execution.htmlRefseclists.org/fulldisclosure/2020/Jan/40Refaccess.redhat.com/errata/RHSA-2019:3286Refaccess.redhat.com/errata/RHSA-2019:3287Refaccess.redhat.com/errata/RHSA-2019:3299Refaccess.redhat.com/errata/RHSA-2019:3300Refaccess.redhat.com/errata/RHSA-2019:3724Refaccess.redhat.com/errata/RHSA-2019:3735

How CyberStrike helps

Frequently asked questions

What is CVE-2019-11043?

CVE-2019-11043 is a high-severity vulnerability. It was published on October 28, 2019 and has a CVSS 3.1 base score of 8.7 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2019-11043?

This vulnerability has a CVSS 3.1 base score of 8.7, 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-2019-11043?

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-2019-11043?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-11043 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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