Undertow: learningpushhandler can lead to remote memory dos attacks
Priority LOW 34CWE-401Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 6 fixed, 13 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-401.
Summary
A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites that config, the server is not subject to the attack. The attacker needs to be able to reach the server with a normal HTTP request.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01866 79th percentileScored 2026-11-07
Fix Partial io.undertow:undertow-core (Maven): 2.3.15.Final, 2.2.34.FinalRed Hat: 6 advisoriesRed Hat: 6 fixed, 13 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | undertow | up to 2.3.14.Final | — | No fix listed | CNA |
| Red Hat | Red Hat build of Quarkus 3.8.6.redhat | — | 5.2.4.redhat-00001 | Patch available | CNA |
| Red Hat | Red Hat JBoss Enterprise Application Platform | — | 2.2.33.SP1-redhat-00001 | Patch available | CNA |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8 | — | 2.2.33-1.SP1_redhat_00001.1.el8eap | Patch available | CNA |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9 | — | 2.2.33-1.SP1_redhat_00001.1.el9eap | Patch available | CNA |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7 | — | 2.2.33-1.SP1_redhat_00001.1.el7eap | Patch available | CNA |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 | — | — | Not affected | CNA |
| Red Hat | OpenShift Serverless | — | — | No fix listed | CNA |
| Red Hat | Red Hat build of Apache Camel 4 for Quarkus 3 | — | — | No fix listed | CNA |
| Red Hat | Red Hat build of Apache Camel for Spring Boot 4 | — | — | No fix listed | CNA |
| Red Hat | Red Hat build of Apache Camel - HawtIO 4 | — | — | Not affected | CNA |
| Red Hat | Red Hat build of Apicurio Registry 2 | — | — | Not affected | CNA |
| Red Hat | Red Hat Build of Keycloak | — | — | Not affected | CNA |
| Red Hat | Red Hat build of OptaPlanner 8 | — | — | No fix listed | CNA |
| Red Hat | Red Hat build of Quarkus | — | — | Not affected | CNA |
| Red Hat | Red Hat Data Grid 8 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Fuse 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Integration Camel K 1 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Integration Camel Quarkus 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat JBoss Data Grid 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | — | — | Not affected | CNA |
| Red Hat | Red Hat JBoss Fuse Service Works 6 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Process Automation 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Single Sign-On 7 | — | — | No fix listed | CNA |
| Red Hat | streams for Apache Kafka | — | — | No fix listed | CNA |
| — | io.undertow:undertow-core (Maven) | 2.3.0.Alpha1 to before 2.3.15.Final | 2.3.15.Final | Patch available | GHSA-ch7q-gpff-h9hp |
| — | io.undertow:undertow-core (Maven) | before 2.2.34.Final | 2.2.34.Final | Patch available | GHSA-ch7q-gpff-h9hp |
- undertow Vendor— Affected up to 2.3.14.Final Fixed in — No fix listed CNA
- Red Hat build of Quarkus 3.8.6.redhat VendorRed Hat Affected — Fixed in 5.2.4.redhat-00001 Patch available CNA
- Red Hat JBoss Enterprise Application Platform VendorRed Hat Affected — Fixed in 2.2.33.SP1-redhat-00001 Patch available CNA
- Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8 VendorRed Hat Affected — Fixed in 2.2.33-1.SP1_redhat_00001.1.el8eap Patch available CNA
- Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9 VendorRed Hat Affected — Fixed in 2.2.33-1.SP1_redhat_00001.1.el9eap Patch available CNA
- Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7 VendorRed Hat Affected — Fixed in 2.2.33-1.SP1_redhat_00001.1.el7eap Patch available CNA
- Red Hat JBoss Enterprise Application Platform 8 VendorRed Hat Affected — Fixed in — Not affected CNA
- OpenShift Serverless VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat build of Apache Camel 4 for Quarkus 3 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat build of Apache Camel for Spring Boot 4 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat build of Apache Camel - HawtIO 4 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat build of Apicurio Registry 2 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Build of Keycloak VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat build of OptaPlanner 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat build of Quarkus VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Data Grid 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Fuse 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Integration Camel K 1 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Integration Camel Quarkus 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat JBoss Data Grid 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat JBoss Enterprise Application Platform Expansion Pack VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat JBoss Fuse Service Works 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Process Automation 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Single Sign-On 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- streams for Apache Kafka VendorRed Hat Affected — Fixed in — No fix listed CNA
- io.undertow:undertow-core (Maven) Vendor— Affected 2.3.0.Alpha1 to before 2.3.15.Final Fixed in 2.3.15.Final Patch available GHSA-ch7q-gpff-h9hp
- io.undertow:undertow-core (Maven) Vendor— Affected before 2.2.34.Final Fixed in 2.2.34.Final Patch available GHSA-ch7q-gpff-h9hp
CPE names CNA · 24
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:quarkus:3.8 | 3.8 | — | Red Hat |
| cpe:/a:redhat:jboss_enterprise_application_platform:7.4 | 7.4 | — | Red Hat |
| cpe:/a:redhat:jboss_enterprise_application_platform:7.4::el8 | 7.4 | — | Red Hat |
| cpe:/a:redhat:jboss_enterprise_application_platform:7.4::el9 | 7.4 | — | Red Hat |
| cpe:/a:redhat:jboss_enterprise_application_platform:7.4::el7 | 7.4 | — | Red Hat |
| cpe:/a:redhat:jboss_enterprise_application_platform:8.0 | 8.0 | — | Red Hat |
| cpe:/a:redhat:serverless:1 | 1 | — | Red Hat |
| cpe:/a:redhat:camel_quarkus:3 | 3 | — | Red Hat |
| cpe:/a:redhat:camel_spring_boot:4 | 4 | — | Red Hat |
| cpe:/a:redhat:apache_camel_hawtio:4 | 4 | — | Red Hat |
- cpe:/a:redhat:quarkus:3.8 Versions 3.8 — ·Red Hat
- cpe:/a:redhat:jboss_enterprise_application_platform:7.4 Versions 7.4 — ·Red Hat
- cpe:/a:redhat:jboss_enterprise_application_platform:7.4::el8 Versions 7.4 — ·Red Hat
- cpe:/a:redhat:jboss_enterprise_application_platform:7.4::el9 Versions 7.4 — ·Red Hat
- cpe:/a:redhat:jboss_enterprise_application_platform:7.4::el7 Versions 7.4 — ·Red Hat
- cpe:/a:redhat:jboss_enterprise_application_platform:8.0 Versions 8.0 — ·Red Hat
- cpe:/a:redhat:serverless:1 Versions 1 — ·Red Hat
- cpe:/a:redhat:camel_quarkus:3 Versions 3 — ·Red Hat
- cpe:/a:redhat:camel_spring_boot:4 Versions 4 — ·Red Hat
- cpe:/a:redhat:apache_camel_hawtio:4 Versions 4 — ·Red Hat
Show 14 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:service_registry:2 | 2 | — | Red Hat |
| cpe:/a:redhat:build_keycloak: | — | — | Red Hat |
| cpe:/a:redhat:optaplanner:::el6 | — | — | Red Hat |
| cpe:/a:redhat:quarkus:2 | 2 | — | Red Hat |
| cpe:/a:redhat:jboss_data_grid:8 | 8 | — | Red Hat |
| cpe:/a:redhat:jboss_fuse:7 | 7 | — | Red Hat |
| cpe:/a:redhat:camel_k:1 | 1 | — | Red Hat |
| cpe:/a:redhat:camel_quarkus:2 | 2 | — | Red Hat |
| cpe:/a:redhat:jboss_data_grid:7 | 7 | — | Red Hat |
| cpe:/a:redhat:jbosseapxp | — | — | Red Hat |
| cpe:/a:redhat:jboss_fuse_service_works:6 | 6 | — | Red Hat |
| cpe:/a:redhat:jboss_bpms:7 | 7 | — | Red Hat |
| cpe:/a:redhat:red_hat_single_sign_on:7 | 7 | — | Red Hat |
| cpe:/a:redhat:amq_streams:1 | 1 | — | Red Hat |
- cpe:/a:redhat:service_registry:2 Versions 2 — ·Red Hat
- cpe:/a:redhat:build_keycloak: Versions — — ·Red Hat
- cpe:/a:redhat:optaplanner:::el6 Versions — — ·Red Hat
- cpe:/a:redhat:quarkus:2 Versions 2 — ·Red Hat
- cpe:/a:redhat:jboss_data_grid:8 Versions 8 — ·Red Hat
- cpe:/a:redhat:jboss_fuse:7 Versions 7 — ·Red Hat
- cpe:/a:redhat:camel_k:1 Versions 1 — ·Red Hat
- cpe:/a:redhat:camel_quarkus:2 Versions 2 — ·Red Hat
- cpe:/a:redhat:jboss_data_grid:7 Versions 7 — ·Red Hat
- cpe:/a:redhat:jbosseapxp Versions — — ·Red Hat
- cpe:/a:redhat:jboss_fuse_service_works:6 Versions 6 — ·Red Hat
- cpe:/a:redhat:jboss_bpms:7 Versions 7 — ·Red Hat
- cpe:/a:redhat:red_hat_single_sign_on:7 Versions 7 — ·Red Hat
- cpe:/a:redhat:amq_streams:1 Versions 1 — ·Red Hat
Remediation
- Fix · GHSA-ch7q-gpff-h9hp io.undertow:undertow-core (Maven) Fixed in 2.3.15.Final Advisory →
- Fix · GHSA-ch7q-gpff-h9hp io.undertow:undertow-core (Maven) Fixed in 2.2.34.Final Advisory →
Red Hat 6 advisories
- RHSA-2024:6437 Released 2024-09-23 · Red Hat rating ModerateRed Hat build of Quarkus 3.8.6 release and security update
- Red Hat build of Quarkus 3.8.6.redhat io.quarkus.http.quarkus-http-core-5.2.4.redhat-00001.jar, io.vertx.vertx-grpc-client-4.5.7.redhat-00003.jar, io.vertx.vertx-grpc-server-4.5.7.redhat-00003.jar
- RHSA-2024:5147 Released 2024-08-08 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 7.4.18 Security update
- Red Hat JBoss Enterprise Application Platform io.netty.netty-codec-http-4.1.108.Final-redhat-00001.jar, io.undertow.undertow-core-2.2.33.SP1-redhat-00001.jar, org.bouncycastle.bcprov-jdk18on-1.78.1.redhat-00002.pom
- RHSA-2024:5144 Released 2024-08-08 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 7.4.18 Security update
- Red Hat JBoss EAP 7.4 for RHEL 8 eap7-bouncycastle-1.78.1-1.redhat_00002.1.el8eap, eap7-bouncycastle-mail-1.78.1-1.redhat_00002.1.el8eap, eap7-bouncycastle-pg-1.78.1-1.redhat_00002.1.el8eap +47
Show 3 more Red Hat advisories
- RHSA-2024:5143 Released 2024-08-08 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 7.4.18 Security update
- Red Hat JBoss EAP 7.4 for RHEL 7 Server eap7-bouncycastle-1.78.1-1.redhat_00002.1.el7eap, eap7-bouncycastle-mail-1.78.1-1.redhat_00002.1.el7eap, eap7-bouncycastle-pg-1.78.1-1.redhat_00002.1.el7eap +47
- RHSA-2024:5145 Released 2024-08-08 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 7.4.18 Security update
- Red Hat JBoss EAP 7.4 for RHEL 9 eap7-bouncycastle-1.78.1-1.redhat_00002.1.el9eap, eap7-bouncycastle-mail-1.78.1-1.redhat_00002.1.el9eap, eap7-bouncycastle-pg-1.78.1-1.redhat_00002.1.el9eap +47
- RHSA-2024:4392 Released 2024-07-08 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 8.0.2 Security update
- Red Hat JBoss Enterprise Application Platform 8
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Red Hat Build of Keycloak, Red Hat Data Grid 8 and 13 more products — RHSA-2024:4392
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2024-05534 Undertow: response write hangs in case of java 17 tlsv1.3 newsessionticketPriority MEDIUM 44
- Advisory ·
Red Hat Build of Keycloak, Red Hat Data Grid 8 and 13 more products — RHSA-2024:5143
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2024-05534 Undertow: response write hangs in case of java 17 tlsv1.3 newsessionticketPriority MEDIUM 44
Show 3 more groups
- Advisory ·
Red Hat Build of Keycloak, Red Hat Data Grid 8 and 13 more products — RHSA-2024:5144
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2024-05534 Undertow: response write hangs in case of java 17 tlsv1.3 newsessionticketPriority MEDIUM 44
- Advisory ·
Red Hat Build of Keycloak, Red Hat Data Grid 8 and 13 more products — RHSA-2024:5145
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2024-05534 Undertow: response write hangs in case of java 17 tlsv1.3 newsessionticketPriority MEDIUM 44
- Advisory ·
Red Hat Build of Keycloak, Red Hat Data Grid 8 and 13 more products — RHSA-2024:5147
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2024-05534 Undertow: response write hangs in case of java 17 tlsv1.3 newsessionticketPriority MEDIUM 44
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| OpenShift Serverless | Affected | No fix yet: Fix deferred |
| Red Hat Data Grid 8 | Affected | No fix yet: Fix deferred |
| Red Hat Fuse 7 | Affected | No fix planned: Out of support scope |
| Red Hat Integration Camel K 1 | Affected | No fix yet: Fix deferred |
| Red Hat Integration Camel Quarkus 2 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Data Grid 7 | Affected | No fix planned: Out of support scope |
| Red Hat JBoss Fuse Service Works 6 | Affected | No fix planned: Out of support scope |
| Red Hat Process Automation 7 | Affected | No fix planned: Out of support scope |
| Red Hat Single Sign-On 7 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apache Camel 4 for Quarkus 3 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apache Camel for Spring Boot 4 | Affected | No fix yet |
| Red Hat build of OptaPlanner 8 | Affected | No fix yet: Fix deferred |
| streams for Apache Kafka | Affected | No fix yet: Fix deferred |
| Red Hat JBoss EAP 7.4 for RHEL 7 Server | Fixed | RHSA-2024:5143 |
| Red Hat JBoss EAP 7.4 for RHEL 8 | Fixed | RHSA-2024:5144 |
| Red Hat JBoss EAP 7.4 for RHEL 9 | Fixed | RHSA-2024:5145 |
| Red Hat JBoss Enterprise Application Platform | Fixed | RHSA-2024:5147 |
| Red Hat JBoss Enterprise Application Platform 8 | Fixed | RHSA-2024:4392 |
| Red Hat build of Quarkus 3.8.6.redhat | Fixed | RHSA-2024:6437 |
Not affected: 10 products
- Red Hat Build of Keycloak
- Red Hat JBoss EAP 7.4 for RHEL 7 Server
- Red Hat JBoss EAP 7.4 for RHEL 8
- Red Hat JBoss EAP 7.4 for RHEL 9
- Red Hat JBoss Enterprise Application Platform
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat build of Apache Camel - HawtIO 4
- Red Hat build of Apicurio Registry 2
- Red Hat build of Quarkus
- Red Hat build of Quarkus 3.8.6.redhat
Timeline
- 2026-10-02 Threatist record created from CVE-2024-3653
- 2026-10-03 Alias added: GHSA-ch7q-gpff-h9hp
References
Advisory 7
Other 7
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Sources
- CVE-2024-3653 · CVE Program
- CVE-2024-3653 · NVD
- FIRST EPSS
- GHSA-ch7q-gpff-h9hp · GitHub Advisory Database · CC BY 4.0
- CVE-2024-3653 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences