CVE-2016-9589
UnknownEPSS 3.13%
Last modified
CVE-2016-9589 is a vulnerability of currently unknown severity. 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. EPSS estimates a 3.13% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Redhat | Jboss Wildfly Application Server | <= 10.1.0 | — |
| Redhat | Jboss Wildfly Application Server | 11.0.0 | Alpha1 |
References
- http://rhn.redhat.com/errata/RHSA-2017-0830.htmlVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0831.htmlVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0832.htmlVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0834.htmlVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0876.htmlVendor Advisory
- http://www.securityfocus.com/bid/97060Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:0872Vendor Advisory
- https://access.redhat.com/errata/RHSA-2017:0873Vendor Advisory
- https://access.redhat.com/errata/RHSA-2017:3454Vendor Advisory
- https://access.redhat.com/errata/RHSA-2017:3455Vendor Advisory
- https://access.redhat.com/errata/RHSA-2017:3456Vendor Advisory
- https://access.redhat.com/errata/RHSA-2017:3458Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1404782Issue Tracking
- http://rhn.redhat.com/errata/RHSA-2017-0830.htmlVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0831.htmlVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0832.htmlVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0834.htmlVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0876.htmlVendor Advisory
- http://www.securityfocus.com/bid/97060Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:0872Vendor Advisory
- https://access.redhat.com/errata/RHSA-2017:0873Vendor Advisory
- https://access.redhat.com/errata/RHSA-2017:3454Vendor Advisory
- https://access.redhat.com/errata/RHSA-2017:3455Vendor Advisory
- https://access.redhat.com/errata/RHSA-2017:3456Vendor Advisory
- https://access.redhat.com/errata/RHSA-2017:3458Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1404782Issue Tracking
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-9589?
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.
How severe is CVE-2016-9589?
Severity scoring for CVE-2016-9589 is pending analysis. The EPSS model estimates a 3.13% probability of exploitation in the next 30 days.
How do I fix CVE-2016-9589?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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