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CVE-2018-11776

8.1 · HIGHActively Exploited

Apache Struts versions 2.3 to 2.3.34 and 2.5 to 2.5.16 suffer from possible Remote Code Execution when alwaysSelectFullNamespace is true (either by user or a plugin like Convention Plugin) and then…

Published Aug 22, 2018EPSS 99.99%

Overview

CVE-2018-11776 is a high-severity vulnerability. It was published on August 22, 2018 and has a CVSS 3.1 base score of 8.1 (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 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Apache Struts versions 2.3 to 2.3.34 and 2.5 to 2.5.16 suffer from possible Remote Code Execution when alwaysSelectFullNamespace is true (either by user or a plugin like Convention Plugin) and then: results are used with no namespace and in same time, its upper package have no or wildcard namespace and similar to results, same possibility when using url tag which doesn't have value and action set and in same time, its upper package have no or wildcard namespace.

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/172830/Apache-Struts-Remote-Code-Execution.htmlRefwww.arubanetworks.com/assets/alert/ARUBA-PSA-2018-005.txtRefwww.oracle.com/technetwork/security-advisory/alert-cve-2018-11776-5072787.htmlRefwww.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.htmlRefwww.securityfocus.com/bid/105125Refwww.securitytracker.com/id/1041547Refwww.securitytracker.com/id/1041888Refcwiki.apache.org/confluence/display/WW/S2-057GitHubgithub.com/hook-s3c/CVE-2018-11776-Python-PoCReflgtm.com/blog/apache_struts_CVE-2018-11776

How CyberStrike helps

Frequently asked questions

What is CVE-2018-11776?

CVE-2018-11776 is a high-severity vulnerability. It was published on August 22, 2018 and has a CVSS 3.1 base score of 8.1 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2018-11776?

This vulnerability has a CVSS 3.1 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-2018-11776?

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-2018-11776?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-11776 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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