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CVE-2017-9791

9.8 · CRITICALActively Exploited

The Struts 1 plugin in Apache Struts 2.1.x and 2.3.x might allow remote code execution via a malicious field value passed in a raw message to the ActionMessage.

Published Jul 10, 2017CWE-20EPSS 98.91%

Overview

CVE-2017-9791 is a critical-severity vulnerability. It was published on July 10, 2017 and has a CVSS 3.1 base score of 9.8 (CRITICAL). 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 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The Struts 1 plugin in Apache Struts 2.1.x and 2.3.x might allow remote code execution via a malicious field value passed in a raw message to the ActionMessage.

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

Refstruts.apache.org/docs/s2-048.htmlRefwww.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.htmlRefwww.securityfocus.com/bid/99484Refwww.securitytracker.com/id/1038838Refsecurity.netapp.com/advisory/ntap-20180706-0002/Refwww.exploit-db.com/exploits/42324/Refwww.exploit-db.com/exploits/44643/Refstruts.apache.org/docs/s2-048.htmlRefwww.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.htmlRefwww.securityfocus.com/bid/99484

How CyberStrike helps

Frequently asked questions

What is CVE-2017-9791?

CVE-2017-9791 is a critical-severity vulnerability. It was published on July 10, 2017 and has a CVSS 3.1 base score of 9.8 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2017-9791?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-9791?

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-2017-9791?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-9791 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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