CVE-2023-5379

CVE-2023-5379 · Undertow: ajp request closes connection exceeding maxrequestsize

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

A flaw was found in Undertow. When an AJP request is sent that exceeds the max-header-size attribute in ajp-listener, JBoss EAP is marked in an error state by mod_cluster in httpd, causing JBoss EAP to close the TCP connection without returning an AJP response. This happens because mod_proxy_cluster marks the JBoss EAP instance as an error worker when the TCP connection is closed from the backend after sending the AJP request without receiving an AJP response, and stops forwarding. This issue could allow a malicious user could to repeatedly send requests that exceed the max-header-size, causing a Denial of Service (DoS).

CVSS 7.5 · High · EPSS 1.0% · Fix available

Published: 2023-12-12T21:54:52.669Z
Updated: 2026-08-04T21:31:13.272Z

Stack: system

Affected products and versions

red hat jboss enterprise application platform 7.1 eus for rhel 7
Versions
- ≥ 0:3.0.1-4.b08_redhat_00005.1.ep7.el7: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.1 eus for rhel 7
Versions
- ≥ 0:5.1.17-3.Final_redhat_00004.1.ep7.el7: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.1 eus for rhel 7
Versions
- ≥ 0:2.8.11.6-3.SP1_redhat_00003.1.ep7.el7: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.1 eus for rhel 7
Versions
- ≥ 0:4.0.12-1.Final_redhat_00002.1.ep7.el7: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.1 eus for rhel 7
Versions
- ≥ 0:4.1.63-2.Final_redhat_00003.1.ep7.el7: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.1 eus for rhel 7
Versions
- ≥ 0:1.4.18-16.SP14_redhat_00001.1.ep7.el7: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.1 eus for rhel 7
Versions
- ≥ 0:7.1.11-4.GA_redhat_00002.1.ep7.el7: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.1 eus for rhel 7
Versions
- ≥ 0:1.1.14-1.Final_redhat_00001.1.ep7.el7: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.1 eus for rhel 7
Versions
- ≥ 0:1.0.21-1.Final_redhat_00001.1.ep7.el7: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.1 eus for rhel 7
Versions
- ≥ 0:1.0.13-1.Final_redhat_00001.1.ep7.el7: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.1 eus for rhel 7
Versions
- ≥ 0:1.0.12-1.Final_redhat_00001.1.ep7.el7: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.1 eus for rhel 7
Versions
- ≥ 0:1.0.12-6.Final_redhat_00001.1.ep7.el7: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.3 eus for rhel 7
Versions
- ≥ 0:2.10.4-3.redhat_00006.1.el7eap: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.3 eus for rhel 7
Versions
- ≥ 0:2.10.4-5.redhat_00006.1.el7eap: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.3 eus for rhel 7
Versions
- ≥ 0:2.10.4-2.redhat_00006.1.el7eap: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.3 eus for rhel 7
Versions
- ≥ 0:1.7.2-16.Final_redhat_00017.1.el7eap: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.3 eus for rhel 7
Versions
- ≥ 0:4.1.63-5.Final_redhat_00003.1.el7eap: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.3 eus for rhel 7
Versions
- ≥ 0:2.0.41-4.SP5_redhat_00001.1.el7eap: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.3 eus for rhel 7
Versions
- ≥ 0:7.3.14-3.GA_redhat_00002.1.el7eap: Not affected (rpm)
No fix published
red hat jboss enterprise application platform 7.3 eus for rhel 7
Versions
- ≥ 0:1.10.17-1.Final_redhat_00001.1.el7eap: Not affected (rpm)
No fix published
red hat build of quarkus
No fix published
red hat data grid 8
No fix published
red hat decision manager 7
No fix published
red hat fuse 7
No fix published

Original sources

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