# Undertow: ajp request closes connection exceeding maxrequestsize CVE record · `CVE-2023-5379` - **Identifiers:** `CVE-2023-5379` - **State:** Confirmed - **Severity:** CVSS 7.5 High - **Critical:** No - **CNA:** redhat - **Weakness (CWE):** [CWE-770](https://cwe.mitre.org/data/definitions/770.html) - **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md) - **Technologies:** [Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7](https://agentprime.io/advisories/technology/red-hat-jboss-enterprise-application-platform-7-1-eus-for-rhel-7.md) · [Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7](https://agentprime.io/advisories/technology/red-hat-jboss-enterprise-application-platform-7-3-eus-for-rhel-7.md) · [Red Hat build of Quarkus](https://agentprime.io/advisories/technology/red-hat-build-of-quarkus.md) · [Red Hat Data Grid 8](https://agentprime.io/advisories/technology/red-hat-data-grid-8.md) · [Red Hat Decision Manager 7](https://agentprime.io/advisories/technology/red-hat-decision-manager-7.md) · [Red Hat Fuse 7](https://agentprime.io/advisories/technology/red-hat-fuse-7.md) · [Red Hat JBoss Data Grid 7](https://agentprime.io/advisories/technology/red-hat-jboss-data-grid-7.md) · [Red Hat JBoss Enterprise Application Platform 7](https://agentprime.io/advisories/technology/red-hat-jboss-enterprise-application-platform-7.md) · [Red Hat JBoss Fuse 6](https://agentprime.io/advisories/technology/red-hat-jboss-fuse-6.md) · [Red Hat Process Automation 7](https://agentprime.io/advisories/technology/red-hat-process-automation-7.md) · [Red Hat Single Sign-On 7](https://agentprime.io/advisories/technology/red-hat-single-sign-on-7.md) · [Red Hat support for Spring Boot](https://agentprime.io/advisories/technology/red-hat-support-for-spring-boot.md) - **Published:** 12 Dec 2023 - **Updated:** 5 Nov 2026 - **Reviewed by a person:** No Published by the CVE Program (CNA: redhat) at 12 Dec 2023, 21:54 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. ## Affected products, as the CNA wrote them - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7. - unaffected: `0:3.0.1-4.b08_redhat_00005.1.ep7.el7 to before *` (rpm) - Other versions: affected - Package name: `eap7-glassfish-el` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7. - unaffected: `0:5.1.17-3.Final_redhat_00004.1.ep7.el7 to before *` (rpm) - Other versions: affected - Package name: `eap7-hibernate` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7. - unaffected: `0:2.8.11.6-3.SP1_redhat_00003.1.ep7.el7 to before *` (rpm) - Other versions: affected - Package name: `eap7-jackson-databind` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7. - unaffected: `0:4.0.12-1.Final_redhat_00002.1.ep7.el7 to before *` (rpm) - Other versions: affected - Package name: `eap7-jboss-ejb-client` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7. - unaffected: `0:4.1.63-2.Final_redhat_00003.1.ep7.el7 to before *` (rpm) - Other versions: affected - Package name: `eap7-netty` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7. - unaffected: `0:1.4.18-16.SP14_redhat_00001.1.ep7.el7 to before *` (rpm) - Other versions: affected - Package name: `eap7-undertow` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7. - unaffected: `0:7.1.11-4.GA_redhat_00002.1.ep7.el7 to before *` (rpm) - Other versions: affected - Package name: `eap7-wildfly` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7. - unaffected: `0:1.1.14-1.Final_redhat_00001.1.ep7.el7 to before *` (rpm) - Other versions: affected - Package name: `eap7-wildfly-elytron` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7. - unaffected: `0:1.0.21-1.Final_redhat_00001.1.ep7.el7 to before *` (rpm) - Other versions: affected - Package name: `eap7-wildfly-http-client` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7. - unaffected: `0:1.0.13-1.Final_redhat_00001.1.ep7.el7 to before *` (rpm) - Other versions: affected - Package name: `eap7-wildfly-naming-client` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7. - unaffected: `0:1.0.12-1.Final_redhat_00001.1.ep7.el7 to before *` (rpm) - Other versions: affected - Package name: `eap7-wildfly-openssl` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7. - unaffected: `0:1.0.12-6.Final_redhat_00001.1.ep7.el7 to before *` (rpm) - Other versions: affected - Package name: `eap7-wildfly-openssl-linux` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7. - unaffected: `0:2.10.4-3.redhat_00006.1.el7eap to before *` (rpm) - Other versions: affected - Package name: `eap7-jackson-annotations` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7. - unaffected: `0:2.10.4-3.redhat_00006.1.el7eap to before *` (rpm) - Other versions: affected - Package name: `eap7-jackson-core` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7. - unaffected: `0:2.10.4-5.redhat_00006.1.el7eap to before *` (rpm) - Other versions: affected - Package name: `eap7-jackson-databind` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7. - unaffected: `0:2.10.4-3.redhat_00006.1.el7eap to before *` (rpm) - Other versions: affected - Package name: `eap7-jackson-jaxrs-providers` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7. - unaffected: `0:2.10.4-5.redhat_00006.1.el7eap to before *` (rpm) - Other versions: affected - Package name: `eap7-jackson-modules-base` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7. - unaffected: `0:2.10.4-2.redhat_00006.1.el7eap to before *` (rpm) - Other versions: affected - Package name: `eap7-jackson-modules-java8` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7. - unaffected: `0:1.7.2-16.Final_redhat_00017.1.el7eap to before *` (rpm) - Other versions: affected - Package name: `eap7-jboss-server-migration` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7. - unaffected: `0:4.1.63-5.Final_redhat_00003.1.el7eap to before *` (rpm) - Other versions: affected - Package name: `eap7-netty` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7. - unaffected: `0:2.0.41-4.SP5_redhat_00001.1.el7eap to before *` (rpm) - Other versions: affected - Package name: `eap7-undertow` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7. - unaffected: `0:7.3.14-3.GA_redhat_00002.1.el7eap to before *` (rpm) - Other versions: affected - Package name: `eap7-wildfly` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7. - unaffected: `0:1.10.17-1.Final_redhat_00001.1.el7eap to before *` (rpm) - Other versions: affected - Package name: `eap7-wildfly-elytron` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat build of Quarkus. - No versions given - Other versions: unaffected - Package name: `quarkus-undertow` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Data Grid 8. - No versions given - Other versions: unaffected - Package name: `undertow` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Decision Manager 7. - No versions given - Other versions: unknown - Package name: `undertow` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Fuse 7. - No versions given - Other versions: unknown - Package name: `undertow` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat JBoss Data Grid 7. - No versions given - Other versions: unknown - Package name: `undertow` - Collection: `https://access.redhat.com/jbossnetwork/restricted/listSoftware.html` - Vendor: Red Hat. Product: Red Hat JBoss Enterprise Application Platform 7. - No versions given - Other versions: affected - Package name: `undertow` - Collection: `https://access.redhat.com/jbossnetwork/restricted/listSoftware.html` - Vendor: Red Hat. Product: Red Hat JBoss Fuse 6. - No versions given - Other versions: unknown - Package name: `undertow` - Collection: `https://access.redhat.com/jbossnetwork/restricted/listSoftware.html` - Vendor: Red Hat. Product: Red Hat Process Automation 7. - No versions given - Other versions: unknown - Package name: `undertow` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Single Sign-On 7. - No versions given - Other versions: affected - Package name: `undertow` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat support for Spring Boot. - No versions given - Other versions: unaffected - Package name: `undertow` - Collection: `https://access.redhat.com/downloads/content/package-browser/` ## Not analysed yet We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter. ## Severity and exploitation - 7.5 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`, from CNA (redhat) - **CISA KEV:** Not listed. - **EPSS:** 0.010, the 63rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days. ## Timeline - 12 Dec 2023, 21:54 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2023-5379) - 12 Dec 2023, 22:15 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2023-5379) ## Sources - [CVE List: CVE-2023-5379](https://www.cve.org/CVERecord?id=CVE-2023-5379) - [NVD: CVE-2023-5379](https://nvd.nist.gov/vuln/detail/CVE-2023-5379) ### References from the CNA - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vdb-entry, redhat) - (issue-tracking, redhat) Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description. ## Check whether this affects you This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run. - With the agentprime MCP server (), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: - As JSON: - Everything that needs attention now: --- The web page: . Everything for agents: .