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CVE-2016-9589

7.5 · HIGH

Undertow in Red Hat wildfly before version 11.0.0.Beta1 is vulnerable to a resource exhaustion resulting in a denial of service.

Published Mar 12, 2018CWE-400EPSS 2.96%

Overview

CVE-2016-9589 is a high-severity vulnerability. It was published on March 12, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Undertow in Red Hat wildfly before version 11.0.0.Beta1 is vulnerable to a resource exhaustion resulting in a denial of service. Undertow keeps a cache of seen HTTP headers in persistent connections. It was found that this cache can easily exploited to fill memory with garbage, up to "max-headers" (default 200) * "max-header-size" (default 1MB) per active TCP connection.

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

Refrhn.redhat.com/errata/RHSA-2017-0830.htmlRefrhn.redhat.com/errata/RHSA-2017-0831.htmlRefrhn.redhat.com/errata/RHSA-2017-0832.htmlRefrhn.redhat.com/errata/RHSA-2017-0834.htmlRefrhn.redhat.com/errata/RHSA-2017-0876.htmlRefwww.securityfocus.com/bid/97060Refaccess.redhat.com/errata/RHSA-2017:0872Refaccess.redhat.com/errata/RHSA-2017:0873Refaccess.redhat.com/errata/RHSA-2017:3454Refaccess.redhat.com/errata/RHSA-2017:3455

How CyberStrike helps

Frequently asked questions

What is CVE-2016-9589?

CVE-2016-9589 is a high-severity vulnerability. It was published on March 12, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).

How severe is CVE-2016-9589?

This vulnerability has a CVSS 3.0 base score of 7.5, 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-2016-9589?

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-2016-9589?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-9589 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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