Uncontrolled resource consumption in Undertow
Priority LOW 36CWE-400Published · 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 · High
- Fix status
- Partial Red Hat: 3 fixed, 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-400.
Summary
A flaw was found in Undertow when using Remoting as shipped in Red Hat Jboss EAP before version 7.2.4. A memory leak in HttpOpenListener due to holding remote connections indefinitely may lead to denial of service. Versions before undertow 2.0.25.SP1 and jboss-remoting 5.0.14.SP1 are believed to be vulnerable.
Why it matters now
EPSS 0.0163 76th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 3 fixed, 3 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Undertow | undertow 2.0.25.SP1, jboss-remoting 5.0.14.SP1 | — | No fix listed | CNA |
- Undertow Vendor— Affected undertow 2.0.25.SP1, jboss-remoting 5.0.14.SP1 Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:redhat:jboss-remoting:*:*:*:*:*:*:*:* | before 5.0.14 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:jboss-remoting:5.0.14:-:*:*:*:*:*:* | 5.0.14 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:jboss_enterprise_application_platform:*:*:*:*:*:*:*:* | before 7.2.4 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:undertow:*:*:*:*:*:*:*:* | before 2.0.25 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:undertow:2.0.25:-:*:*:*:*:*:* | 2.0.25 | Vulnerable | Red Hat |
| cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vsphere:*:* | not specified by NVD | Vulnerable | NetApp |
- cpe:2.3:a:redhat:jboss-remoting:*:*:*:*:*:*:*:* Versions before 5.0.14 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:jboss-remoting:5.0.14:-:*:*:*:*:*:* Versions 5.0.14 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:jboss_enterprise_application_platform:*:*:*:*:*:*:*:* Versions before 7.2.4 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:undertow:*:*:*:*:*:*:*:* Versions before 2.0.25 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:undertow:2.0.25:-:*:*:*:*:*:* Versions 2.0.25 Vulnerable ·Red Hat
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vsphere:*:* Versions not specified by NVD Vulnerable ·NetApp
Remediation
Red Hat 3 advisories
- RHSA-2020:5568 Released 2020-12-16 · Red Hat rating ImportantRed Hat Fuse 7.8.0 release and security update
- Red Hat Fuse 7.8.0
- RHSA-2020:2565 Released 2020-06-15 · Red Hat rating ImportantEAP Continuous Delivery Technical Preview Release 18 security update
- Red Hat JBoss Enterprise Application Platform Continuous Delivery
- RHSA-2019:2938 Released 2019-09-30 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 7.2.4 security update
- Red Hat JBoss EAP 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat JBoss Enterprise Application Platform 7 | Affected | No fix yet |
| Red Hat JBoss Fuse 6 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Application Runtimes | Affected | No fix planned: Out of support scope |
| Red Hat Fuse 7.8.0 | Fixed | RHSA-2020:5568 |
| Red Hat JBoss EAP 7.2 | Fixed | RHSA-2019:2938 |
| Red Hat JBoss Enterprise Application Platform Continuous Delivery | Fixed | RHSA-2020:2565 |
Not affected: 4 products
- Red Hat Decision Manager 7
- Red Hat JBoss Data Grid 7
- Red Hat Process Automation 7
- Red Hat Single Sign-On 7
Timeline
- 2026-10-02 Threatist record created from CVE-2019-19343
- 2026-10-03 Alias added: GHSA-4v4m-hgv5-x3qx
References
Sources
- CVE-2019-19343 · CVE Program
- CVE-2019-19343 · NVD
- FIRST EPSS
- GHSA-4v4m-hgv5-x3qx · GitHub Advisory Database · CC BY 4.0
- CVE-2019-19343 · 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