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CVE-2018-1114 Undertow

Affected softwareUndertow
Severity6.5 Medium CVSS 3.0 3 scores
Fixed in1.4.25.Final, 2.0.5.Final
WeaknessUncontrolled resource consumption (CWE-400)
Published11 Sep 2018
Updated17 Jun 2026

Description

It was found that URLResource.getLastModified() in Undertow closes the file descriptors only when they are finalized which can cause file descriptors to exhaust. This leads to a file handler leak.

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 2.3% 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 Medium or Low severity, no CISA or VulnCheck KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory
Finding This CVE is MEDIUM severity, is not listed in CISA KEV or VulnCheck KEV, has no public exploit or PoC in any indexed source, carries no CISA Vulnrichment finding of a demonstrated exploit, and is not part of an Oracle Critical Patch Update. None of the signals that would put it in front of an engineer is present, and the volume of CVEs below that bar is too great to take one at a time, so no rule is written for it. This is a decision about what we act on, not a finding that the CVE is harmless — a patch may well be derivable, and a low-severity defect can still be one link in a longer chain.
Candidate fix https://bugzilla.redhat.com/show_bug.cgi?id=1573045 : a Red Hat bug: the triage, which links onward to the fix

CVSS

6.5 MEDIUM v3.0 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H 3 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 6.5 MEDIUM CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H secalert@redhat.com Secondary published
CVSS 3.0 6.5 MEDIUM CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H NVD Primary
CVSS 2.0 4.0 none AV:N/AC:L/Au:S/C:N/I:N/A:P NVD Primary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
io.undertow:undertow-core 0 1.4.25.Final unbounded
io.undertow:undertow-core 2.0.0.Alpha1 2.0.5.Final unbounded

Products and versions

4 products, 6 version entries
SourceVendorProductSchemeAffected versions
osv io.undertow undertow-core generic < 1.4.25 · ≥ 2.0.0 and < 2.0.5
nvd redhat undertow generic any version
nvd redhat virtualization generic 4.0 · 4.2
nvd redhat virtualization host generic 4.0

References

URLTags
https://bugzilla.redhat.com/show_bug.cgi?id=1573045 bugzilla
https://access.redhat.com/errata/RHSA-2018:2089 ADVISORY, RHSA-2018:2089
https://access.redhat.com/security/cve/CVE-2018-1114 REPORT, RHSA-2018:2089
https://access.redhat.com/errata/RHSA-2018:2090 ADVISORY, RHSA-2018:2090
https://access.redhat.com/errata/RHSA-2018:2643 ADVISORY, RHSA-2018:2643
https://access.redhat.com/errata/RHSA-2018:2669 WEB
https://access.redhat.com/errata/RHSA-2019:0877 WEB
https://bugs.openjdk.java.net/browse/JDK-6956385 WEB
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1114 WEB
https://issues.jboss.org/browse/UNDERTOW-1338 WEB

Timeline

Published2018-09-11By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.