CVE-2016-9589

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.21% Top 15%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Red Hat, Inc. wildfly
Published at:
Updated at:

References

Link Tags
http://rhn.redhat.com/errata/RHSA-2017-0831.html vendor advisory
http://rhn.redhat.com/errata/RHSA-2017-0876.html vendor advisory
http://rhn.redhat.com/errata/RHSA-2017-0834.html vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1404782 issue tracking
https://access.redhat.com/errata/RHSA-2017:3458 vendor advisory
http://rhn.redhat.com/errata/RHSA-2017-0832.html vendor advisory
http://www.securityfocus.com/bid/97060 third party advisory vdb entry
https://access.redhat.com/errata/RHSA-2017:3455 vendor advisory
https://access.redhat.com/errata/RHSA-2017:3456 vendor advisory
https://access.redhat.com/errata/RHSA-2017:0873 vendor advisory
https://access.redhat.com/errata/RHSA-2017:3454 vendor advisory
http://rhn.redhat.com/errata/RHSA-2017-0830.html vendor advisory
https://access.redhat.com/errata/RHSA-2017:0872 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-9589?
CVE-2016-9589 has been scored as a high severity vulnerability.
How to fix CVE-2016-9589?
To fix CVE-2016-9589, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-9589 being actively exploited in the wild?
It is possible that CVE-2016-9589 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2016-9589?
CVE-2016-9589 affects Red Hat, Inc. wildfly.
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