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Fencer Vulns
high 7.5

CVE-2016-9589 json

Red Hat Wildfly DoS

published 2018-03-12 8 y ago modified 2026-06-17 4 mo ago also GHSA-p4xg-cpr9-vwvj , EUVD-2022-4678

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.0%
EPSS 3.0% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.wildfly:wildfly-undertow 11.0.0.Beta1
  • eap7-jboss-ec2-eap jboss enterprise application platform 7 7.1.0-5.GA_redhat_5.ep7.el6
  • eap7-jboss-ec2-eap jboss enterprise application platform 7.1 7.1.0-5.GA_redhat_5.ep7.el7
  • eap7-jboss-ec2-eap-samples jboss enterprise application platform 7 7.1.0-5.GA_redhat_5.ep7.el6
  • eap7-jboss-ec2-eap-samples jboss enterprise application platform 7.1 7.1.0-5.GA_redhat_5.ep7.el7
  • eap7-ecj jboss enterprise application platform 7.1 4.6.1-1.redhat_1.1.ep7.el7
  • eap7-vdx jboss enterprise application platform 7.1 1.1.6-1.redhat_1.1.ep7.el7
  • eap7-xom jboss enterprise application platform 7.1 1.2.10-2.redhat_1.1.ep7.el7
  • eap7-txw2 jboss enterprise application platform 7.1 2.2.11-10.redhat_4.1.ep7.el7

red hat advisories RHSA-2017:3458RHSA-2017:3455RHSA-2017:3454RHSA-2017:0872RHSA-2017:0873RHSA-2017:0834

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-9589 updated cvss 7.5

wildfly: ParseState headerValuesCache can be exploited to fill heap with garbage

  • Red Hat JBoss EAP 7.0
    fixed: vendor fix RHSA-2017:0830
  • Red Hat JBoss EAP 7.1
    fixed: vendor fix RHSA-2017:3456
  • Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 6 Server eap7-wildfly 7.0.5-3.GA_redhat_2.1.ep7.el6, eap7-netty 4.0.35-2.Final_redhat_1.1.ep7.el6, eap7-xml-security 2.0.8-1.redhat_1.1.ep7.el6, eap7-artemis-native 1.1.0-12.redhat_4.ep7.el6, eap7-jboss-msc 1.2.7-1.SP1_redhat_1.1.ep7.el6, eap7-resteasy 3.0.19-3.SP1_redhat_1.1.ep7.el6, +74 more
    fixed: vendor fix RHSA-2017:0831
  • Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 7 Server eap7-wildfly 7.0.5-3.GA_redhat_2.1.ep7.el7, eap7-netty 4.0.35-2.Final_redhat_1.1.ep7.el7, eap7-xml-security 2.0.8-1.redhat_1.1.ep7.el7, eap7-artemis-native 1.1.0-12.redhat_4.ep7.el7, eap7-jboss-msc 1.2.7-1.SP1_redhat_1.1.ep7.el7, eap7-resteasy 3.0.19-3.SP1_redhat_1.1.ep7.el7, +74 more
    fixed: vendor fix RHSA-2017:0834
  • Red Hat JBoss Enterprise Application Platform 7.1 for RHEL 6 Server eap7-ecj 4.6.1-1.redhat_1.1.ep7.el6, eap7-vdx 1.1.6-1.redhat_1.1.ep7.el6, eap7-xom 1.2.10-2.redhat_1.1.ep7.el6, eap7-jaxen 1.1.6-3.redhat_1.1.ep7.el6, eap7-jsoup 1.8.3-3.redhat_2.1.ep7.el6, eap7-antlr 2.7.7-35.redhat_7.1.ep7.el6, +281 more
    fixed: vendor fix RHSA-2017:3454
  • Red Hat JBoss Enterprise Application Platform 7.1 for RHEL 7 Server eap7-ecj 4.6.1-1.redhat_1.1.ep7.el7, eap7-vdx 1.1.6-1.redhat_1.1.ep7.el7, eap7-xom 1.2.10-2.redhat_1.1.ep7.el7, eap7-jaxen 1.1.6-3.redhat_1.1.ep7.el7, eap7-jsoup 1.8.3-3.redhat_2.1.ep7.el7, eap7-antlr 2.7.7-35.redhat_7.1.ep7.el7, +281 more
    fixed: vendor fix RHSA-2017:3458
  • Red Hat Single Sign-On 7.1
    fixed: vendor fix RHSA-2017:0876
  • Red Hat Single Sign-On 7.1 for RHEL 6 Server rh-sso7 1-2.jbcs.el6, rh-sso7-runtime 1-2.jbcs.el6, rh-sso7-zxing 3.2.1-1.redhat_4.1.jbcs.el6, rh-sso7-libunix-dbus-java 0.8.0-2.jbcs.el6, rh-sso7-liquibase 3.4.1-2.redhat_2.1.jbcs.el6, rh-sso7-twitter4j 4.0.4-1.redhat_3.1.jbcs.el6, +9 more
    fixed: vendor fix RHSA-2017:0872
show 1 more
  • Red Hat Single Sign-On 7.1 for RHEL 7 Server rh-sso7 1-2.jbcs.el7, rh-sso7-runtime 1-2.jbcs.el7, rh-sso7-zxing 3.2.1-1.redhat_4.1.jbcs.el7, rh-sso7-libunix-dbus-java 0.8.0-2.jbcs.el7, rh-sso7-liquibase 3.4.1-2.redhat_2.1.jbcs.el7, rh-sso7-twitter4j 4.0.4-1.redhat_3.1.jbcs.el7, +9 more
    fixed: vendor fix RHSA-2017:0873

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.96% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven org.wildfly:wildfly-undertow
<11.0.0.Beta1
11.0.0.Beta1

Affected products

  • Red Hat, Inc. wildfly

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.