Undertow: outofmemoryerror in httpservletrequestimpl.getparameternames() can cause remote dos attacks
Priority LOW 39CWE-20Published · 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: 4 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-770.
Summary
A flaw was found in Undertow. Servlets using a method that calls HttpServletRequestImpl.getParameterNames() can cause an OutOfMemoryError when the client sends a request with large parameter names. This issue can be exploited by an unauthorized user to cause a remote denial-of-service (DoS) attack.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00401 34th percentileScored 2026-11-07
Fix Partial io.undertow:undertow-core (Maven): 2.2.39.Final, 2.4.0.Beta1, 2.3.21.FinalRed Hat: 4 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 |
|---|---|---|---|---|---|
| Red Hat | Red Hat build of Apicurio Registry 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat build of Quarkus | — | — | Not affected | CNA |
| Red Hat | Red Hat build of Quarkus | — | — | Not affected | CNA |
| Red Hat | Red Hat Data Grid 8 | — | — | Not affected | 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 JBoss Enterprise Application Platform 7 | — | — | Not affected | CNA |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 | — | — | Not affected | CNA |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | — | — | Not affected | CNA |
| Red Hat | Red Hat Process Automation 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Single Sign-On 7 | — | — | Not affected | CNA |
| — | io.undertow:undertow-core (Maven) | before 2.2.39.Final | 2.2.39.Final | Patch available | GHSA-33hj-rcmx-86mv |
| — | io.undertow:undertow-core (Maven) | 2.4.0.Alpha1 to before 2.4.0.Beta1 | 2.4.0.Beta1 | Patch available | GHSA-33hj-rcmx-86mv |
| — | io.undertow:undertow-core (Maven) | 2.3.0.Alpha1 to before 2.3.21.Final | 2.3.21.Final | Patch available | GHSA-33hj-rcmx-86mv |
- Red Hat build of Apicurio Registry 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat build of Quarkus VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat build of Quarkus VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Data Grid 8 VendorRed Hat Affected — Fixed in — Not affected 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 JBoss Enterprise Application Platform 7 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat JBoss Enterprise Application Platform 8 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat JBoss Enterprise Application Platform Expansion Pack VendorRed Hat Affected — Fixed in — Not affected 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 — Not affected CNA
- io.undertow:undertow-core (Maven) Vendor— Affected before 2.2.39.Final Fixed in 2.2.39.Final Patch available GHSA-33hj-rcmx-86mv
- io.undertow:undertow-core (Maven) Vendor— Affected 2.4.0.Alpha1 to before 2.4.0.Beta1 Fixed in 2.4.0.Beta1 Patch available GHSA-33hj-rcmx-86mv
- io.undertow:undertow-core (Maven) Vendor— Affected 2.3.0.Alpha1 to before 2.3.21.Final Fixed in 2.3.21.Final Patch available GHSA-33hj-rcmx-86mv
CPE names CNA · 11
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:service_registry:2 | 2 | — | Red Hat |
| cpe:/a:redhat:quarkus:2 | 2 | — | Red Hat |
| cpe:/a:redhat:quarkus:3 | 3 | — | 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:jboss_enterprise_application_platform:7 | 7 | — | Red Hat |
| cpe:/a:redhat:jboss_enterprise_application_platform:8 | 8 | — | Red Hat |
| cpe:/a:redhat:jbosseapxp | — | — | Red Hat |
| cpe:/a:redhat:jboss_bpms:7 | 7 | — | Red Hat |
- cpe:/a:redhat:service_registry:2 Versions 2 — ·Red Hat
- cpe:/a:redhat:quarkus:2 Versions 2 — ·Red Hat
- cpe:/a:redhat:quarkus:3 Versions 3 — ·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:jboss_enterprise_application_platform:7 Versions 7 — ·Red Hat
- cpe:/a:redhat:jboss_enterprise_application_platform:8 Versions 8 — ·Red Hat
- cpe:/a:redhat:jbosseapxp Versions — — ·Red Hat
- cpe:/a:redhat:jboss_bpms:7 Versions 7 — ·Red Hat
Remediation
- Fix · GHSA-33hj-rcmx-86mv io.undertow:undertow-core (Maven) Fixed in 2.2.39.Final Advisory →
- Fix · GHSA-33hj-rcmx-86mv io.undertow:undertow-core (Maven) Fixed in 2.4.0.Beta1 Advisory →
- Fix · GHSA-33hj-rcmx-86mv io.undertow:undertow-core (Maven) Fixed in 2.3.21.Final Advisory →
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Fuse 7 | Affected | No fix planned: Will not fix |
| Red Hat Integration Camel K 1 | Affected | No fix planned: Will not fix |
| Red Hat Process Automation 7 | Affected | No fix planned: Will not fix |
| Red Hat build of Apicurio Registry 2 | Affected | No fix yet |
Not affected: 6 products
- Red Hat Data Grid 8
- Red Hat JBoss Enterprise Application Platform 7
- Red Hat JBoss Enterprise Application Platform 8
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat Single Sign-On 7
- Red Hat build of Quarkus
Timeline
- 2026-10-02 Threatist record created from CVE-2024-4027
- 2026-10-03 Alias added: GHSA-33hj-rcmx-86mv
References
Other 14
- https://access.redhat.com/security/cve/CVE-2024-4027
- RHBZ#2276410
- https://github.com/undertow-io/undertow/pull/1860
- https://github.com/undertow-io/undertow/pull/1882
- https://github.com/undertow-io/undertow/pull/1894
- https://github.com/undertow-io/undertow/commit/6b7c18481ce65ae4012d92fe2b7f17a21ef4d70b
- https://github.com/undertow-io/undertow/commit/8318dd36fdc2c9842baf10c5f1bfbb3bc23f75e7
- https://github.com/undertow-io/undertow/commit/cb854c779b9e2368c3c274ebd7217c8e75d505be
- https://github.com/undertow-io/undertow/commit/fb14baa51b611a4a9f755f1d8b07d6e12eac68e3
- https://github.com/undertow-io/undertow
- https://github.com/undertow-io/undertow/releases/tag/2.2.39.Final
- https://github.com/undertow-io/undertow/releases/tag/2.3.21.Final
- https://github.com/undertow-io/undertow/releases/tag/2.4.0.Beta1
- https://issues.redhat.com/browse/UNDERTOW-2377
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- TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
- TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2024-4027 · CVE Program
- CVE-2024-4027 · NVD
- FIRST EPSS
- GHSA-33hj-rcmx-86mv · GitHub Advisory Database · CC BY 4.0
- CVE-2024-4027 · 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