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CVE-2016-9589 JBoss WildFly Application Server

Affected softwareJBoss WildFly Application Server
Severity7.5 High CVSS 3.0 2 scores
Fixed in11.0.0.Beta1
WeaknessUncontrolled resource consumption (CWE-400)
Published12 Mar 2018
Updated17 Jun 2026

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 8 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 3.0% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.
Candidate fix https://bugzilla.redhat.com/show_bug.cgi?id=1404782 : a Red Hat bug: the triage, which links onward to the fix

CVSS

7.5 HIGH v3.0 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.0 7.5 HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:N/I:N/A:P NVD Primary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.wildfly:wildfly-undertow 0 11.0.0.Beta1 unbounded

Products and versions

2 products, 3 version entries
SourceVendorProductSchemeAffected versions
osv org.wildfly wildfly-undertow generic < 11.0.0
nvd redhat jboss wildfly application server generic ≤ 10.1.0 · 11.0.0:alpha1

References

URLTags
https://bugzilla.redhat.com/show_bug.cgi?id=1404782 bugzilla
https://access.redhat.com/errata/RHSA-2017:3454 ADVISORY, RHSA-2017:3454
https://access.redhat.com/security/cve/CVE-2016-9589 REPORT, RHSA-2017:3454
https://access.redhat.com/errata/RHSA-2017:3455 ADVISORY, RHSA-2017:3455
https://access.redhat.com/errata/RHSA-2017:0872 WEB
https://access.redhat.com/errata/RHSA-2017:0873 WEB
https://access.redhat.com/errata/RHSA-2017:3456 WEB
https://access.redhat.com/errata/RHSA-2017:3458 WEB
https://github.com/wildfly/wildfly PACKAGE
https://web.archive.org/web/20200227180917/https://www.securityfocus.com/bid/97060 WEB

Timeline

Published2018-03-12By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.