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Fencer Vulns
high 7.5

CVE-2023-1973 json

Undertow: unrestricted request storage leads to memory exhaustion

published 2024-11-07 2 y ago modified 2026-06-17 4 mo ago also GHSA-97cq-f4jm-mv8h , EUVD-2024-3227

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits
0
none known

Summary

A flaw was found in Undertow package. Using the FormAuthenticationMechanism, a malicious user could trigger a Denial of Service by sending crafted requests, leading the server to an OutofMemory error, exhausting the server's memory.

Patch / fix

  • maven io.undertow:undertow-core 2.2.32.Final, 2.3.13.Final
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8 0:2.2.30-1.SP1_redhat_00001.1.el8eap
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9 0:2.2.30-1.SP1_redhat_00001.1.el9eap
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7 0:2.2.30-1.SP1_redhat_00001.1.el7eap
  • Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:2.3.11-1.SP1_redhat_00001.1.el8eap
  • Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:2.3.11-1.SP1_redhat_00001.1.el9eap
  • undertow Debian 14 2.3.18-1

debian advisories DEBIAN-CVE-2023-1973

  • eap7-jberet jboss enterprise application platform 7.4 1.3.9-3.SP3_redhat_00001.1.el7eap
  • eap7-wildfly jboss enterprise application platform 7.4 7.4.16-4.GA_redhat_00002.1.el7eap
  • eap7-undertow jboss enterprise application platform 7.4 2.2.30-1.SP1_redhat_00001.1.el7eap
  • eap7-hibernate jboss enterprise application platform 7.4 5.3.36-1.Final_redhat_00001.1.el7eap
  • eap7-apache-cxf jboss enterprise application platform 7.4 3.4.10-2.redhat_00001.1.el7eap
  • eap7-infinispan jboss enterprise application platform 7.4 11.0.18-2.Final_redhat_00001.1.el7eap
  • eap7-elytron-web jboss enterprise application platform 7.4 1.9.4-1.Final_redhat_00001.1.el7eap
  • eap7-hal-console jboss enterprise application platform 7.4 3.3.21-1.Final_redhat_00001.1.el7eap

red hat advisories RHSA-2025:9583RHSA-2025:4226RHSA-2024:1674RHSA-2024:1675RHSA-2024:1676RHSA-2024:2764

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-2023-1973 updated cvss 7.5

undertow: unrestricted request storage leads to memory exhaustion

  • Red Hat JBoss EAP 7.4 for RHEL 7 Server eap7-undertow 2.2.30-1.SP1_redhat_00001.1.el7eap
    fixed: vendor fix RHSA-2024:1674
  • Red Hat JBoss EAP 7.4 for RHEL 8 eap7-undertow 2.2.30-1.SP1_redhat_00001.1.el8eap
    fixed: vendor fix RHSA-2024:1675
  • Red Hat JBoss EAP 7.4 for RHEL 9 eap7-undertow 2.2.30-1.SP1_redhat_00001.1.el9eap
    fixed: vendor fix RHSA-2024:1676
  • Red Hat JBoss EAP 8.0 for RHEL 8 eap8-undertow 2.3.11-1.SP1_redhat_00001.1.el8eap Red Hat JBoss EAP 8.0 for RHEL 9 eap8-undertow 2.3.11-1.SP1_redhat_00001.1.el9eap
    fixed: vendor fix RHSA-2024:2764
  • Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 Server eap7-jsoup 1.14.2-1.redhat_00002.1.ep7.el7, eap7-wildfly 7.1.10-2.GA_redhat_00002.1.ep7.el7, eap7-woodstox-core 5.0.3-2.redhat_00002.1.ep7.el7, eap7-xml-security 2.0.10-2.redhat_00002.1.ep7.el7, eap7-undertow 1.4.18-14.SP13_redhat_00001.1.ep7.el7, eap7-artemis-native 1.5.5.016-1.redhat_00001.1.ep7.el7, +19 more
    fixed: vendor fix RHSA-2025:4226
  • Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 Server eap7-wildfly 7.3.14-3.GA_redhat_00002.1.el7eap, eap7-netty 4.1.63-5.Final_redhat_00003.1.el7eap, eap7-jackson-core 2.10.4-3.redhat_00006.1.el7eap, eap7-undertow 2.0.41-4.SP5_redhat_00001.1.el7eap, eap7-netty-all 4.1.63-5.Final_redhat_00003.1.el7eap, eap7-jackson-databind 2.10.4-5.redhat_00006.1.el7eap, +37 more
    fixed: vendor fix RHSA-2025:9583
  • Red Hat JBoss Enterprise Application Platform 7.4.16 undertow-core 2.2.30.SP1-redhat-00001
    fixed: vendor fix RHSA-2024:1677
  • Red Hat JBoss Enterprise Application Platform 8
    fixed: vendor fix RHSA-2024:2763
show 1 more
  • Red Hat JBoss EAP 7.4 for RHEL 7 Server eap7-lucene-core 5.5.5-6.redhat_2.1.el7eap, eap7-lucene-misc 5.5.5-6.redhat_2.1.el7eap, eap7-lucene-solr 5.5.5-6.redhat_2.1.el7eap, eap7-lucene-facet 5.5.5-6.redhat_2.1.el7eap, eap7-jberet 1.3.9-3.SP3_redhat_00001.1.el7eap, eap7-lucene-queries 5.5.5-6.redhat_2.1.el7eap, +59 more Red Hat JBoss EAP 7.4 for RHEL 8 eap7-lucene-core 5.5.5-6.redhat_2.1.el8eap, eap7-lucene-misc 5.5.5-6.redhat_2.1.el8eap, eap7-lucene-solr 5.5.5-6.redhat_2.1.el8eap, eap7-lucene-facet 5.5.5-6.redhat_2.1.el8eap, eap7-jberet 1.3.9-3.SP3_redhat_00001.1.el8eap, eap7-lucene-queries 5.5.5-6.redhat_2.1.el8eap, +61 more Red Hat JBoss EAP 7.4 for RHEL 9 eap7-lucene-core 5.5.5-6.redhat_2.1.el9eap, eap7-lucene-misc 5.5.5-6.redhat_2.1.el9eap, eap7-lucene-solr 5.5.5-6.redhat_2.1.el9eap, eap7-lucene-facet 5.5.5-6.redhat_2.1.el9eap, eap7-jberet 1.3.9-3.SP3_redhat_00001.1.el9eap, eap7-lucene-queries 5.5.5-6.redhat_2.1.el9eap, +58 more Red Hat JBoss Enterprise Application Platform 7.4.16 pom.xml, c3 0.6.0, c3 0.7.1, d3 5.9.2, fs 2.1.2, ip 2.0.0, +1557 more
    not affected: vulnerable code not present

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

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.28% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven io.undertow:undertow-core
<2.2.32.Final
>=2.3.0.Alpha1, <2.3.13.Final
2.2.32.Final
2.3.13.Final

Affected products

  • Red Hat Red Hat JBoss Enterprise Application Platform 7
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7
  • Red Hat Red Hat JBoss Enterprise Application Platform 8
  • Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8
  • Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9

Classification

Weakness
  • CWE-20 Improper Input Validation
  • 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.