Read the docs
TI-2020-05845 Aliases CVE-2020-7238GHSA-ff2w-cq2g-wv5f

Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding…

Priority LOW 39CWE-444Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 19 fixed, 14 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat.

Summary

Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869.

Why it matters now

EPSS 0.03647 89th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial io.netty:netty-handler (Maven): 4.1.45Red Hat: 21 advisoriesRed Hat: 19 fixed, 14 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—io.netty:netty-handler (Maven)4.1.43 to before 4.1.454.1.45Patch availableGHSA-ff2w-cq2g-wv5f
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • io.netty:netty-handler (Maven) Vendor— Affected 4.1.43 to before 4.1.45 Fixed in 4.1.45 Patch available GHSA-ff2w-cq2g-wv5f

CPE configurations NVD · 10

CPEVersionsRoleVendor
cpe:2.3:a:netty:netty:4.1.43:*:*:*:*:*:*:*4.1.43Vulnerablenetty
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.2:*:*:*:*:*:*:*7.2VulnerableRed Hat
cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.3:*:*:*:*:*:*:*7.3VulnerableRed Hat
cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:a:redhat:jboss_enterprise_application_platform_text-only_advisories:-:*:*:*:*:*:*:*not specified by NVDVulnerableRed Hat
cpe:2.3:a:redhat:openshift_application_runtimes_text-only_advisories:-:*:*:*:*:*:*:*not specified by NVDVulnerableRed Hat
  • cpe:2.3:a:netty:netty:4.1.43:*:*:*:*:*:*:* Versions 4.1.43 Vulnerable ·netty
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:jboss_enterprise_application_platform_text-only_advisories:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openshift_application_runtimes_text-only_advisories:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-ff2w-cq2g-wv5f io.netty:netty-handler (Maven) Fixed in 4.1.45 Advisory →

Red Hat 21 advisories

  • RHSA-2024:10208 Released 2024-11-25 · Red Hat rating Important
    Red Hat JBoss Enterprise Application Platform 7.1.8 on RHEL 7 security update
    • Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 Server eap7-apache-cxf-3.1.16-3.SP1_redhat_00001.1.ep7.el7, eap7-apache-cxf-rt-3.1.16-3.SP1_redhat_00001.1.ep7.el7, eap7-apache-cxf-services-3.1.16-3.SP1_redhat_00001.1.ep7.el7 +14
  • RHSA-2020:4366 Released 2020-10-27 · Red Hat rating Important
    Satellite 6.8 release
    • Red Hat Satellite 6.8 ansible-collection-redhat-satellite-1.3.0-1.el7sat, ansible-runner-1.4.6-1.el7ar, ansiblerole-foreman_scap_client-0.0.5-1.el7sat +47
    • Red Hat Satellite Capsule 6.8 ansible-collection-redhat-satellite-1.3.0-1.el7sat, ansible-runner-1.4.6-1.el7ar, ansiblerole-foreman_scap_client-0.0.5-1.el7sat +47
  • RHSA-2020:3197 Released 2020-07-29 · Red Hat rating Important
    Red Hat Process Automation Manager 7.8.0 Security Update
    • Red Hat Process Automation 7
Show 18 more Red Hat advisories
  • RHSA-2020:3196 Released 2020-07-29 · Red Hat rating Important
    Red Hat Decision Manager 7.8.0 Security Update
    • Red Hat Decision Manager 7
  • RHSA-2020:3192 Released 2020-07-28 · Red Hat rating Important
    Red Hat Fuse 7.7.0 release and security update
    • Red Hat Fuse 7.7.0
  • RHSA-2020:2333 Released 2020-05-28 · Red Hat rating Important
    EAP Continuous Delivery Technical Preview Release 19 security update
    • EAP-CD 19 Tech Preview
  • RHSA-2020:2321 Released 2020-05-26 · Red Hat rating Important
    Red Hat Data Grid 7.3.6 security update
    • Red Hat Data Grid 7.3.6
  • RHSA-2020:2067 Released 2020-05-18 · Red Hat rating Important
    Red Hat build of Thorntail 2.5.1 security and bug fix update
    • Text-Only RHOAR
  • RHSA-2020:1445 Released 2020-04-14 · Red Hat rating Important
    Red Hat AMQ Broker 7.4.3 release and security update
    • Red Hat AMQ 7.4.3
  • RHSA-2020:0951 Released 2020-03-23 · Red Hat rating Important
    Red Hat Single Sign-On 7.3.7 security update
    • Red Hat Single Sign-On 7.3
  • RHSA-2020:0939 Released 2020-03-23 · Red Hat rating Important
    Red Hat AMQ Streams 1.4.0 release and security update
    • Red Hat AMQ Streams 1
  • RHSA-2020:0922 Released 2020-03-23 · Red Hat rating Important
    Red Hat AMQ Broker 7.6 release and security update
    • Red Hat AMQ
  • RHSA-2020:0805 Released 2020-03-12 · Red Hat rating Important
    Red Hat JBoss Enterprise Application Platform 7.2.7 on RHEL 7 security update
    • Red Hat JBoss EAP 7.2 for RHEL 7 Server eap7-activemq-artemis-2.9.0-2.redhat_00009.1.el7eap, eap7-activemq-artemis-cli-2.9.0-2.redhat_00009.1.el7eap, eap7-activemq-artemis-commons-2.9.0-2.redhat_00009.1.el7eap +47
  • RHSA-2020:0804 Released 2020-03-12 · Red Hat rating Important
    Red Hat JBoss Enterprise Application Platform 7.2.7 on RHEL 6 security update
    • Red Hat JBoss EAP 7.2 for RHEL 6 Server eap7-activemq-artemis-2.9.0-2.redhat_00009.1.el6eap, eap7-activemq-artemis-cli-2.9.0-2.redhat_00009.1.el6eap, eap7-activemq-artemis-commons-2.9.0-2.redhat_00009.1.el6eap +47
  • RHSA-2020:0806 Released 2020-03-12 · Red Hat rating Important
    Red Hat JBoss Enterprise Application Platform 7.2.7 on RHEL 8 security update
    • Red Hat JBoss EAP 7.2 for RHEL 8 eap7-activemq-artemis-2.9.0-2.redhat_00009.1.el8eap, eap7-activemq-artemis-cli-2.9.0-2.redhat_00009.1.el8eap, eap7-activemq-artemis-commons-2.9.0-2.redhat_00009.1.el8eap +47
  • RHSA-2020:0811 Released 2020-03-12 · Red Hat rating Important
    Red Hat JBoss Enterprise Application Platform 7.2.7 security update
    • Red Hat JBoss EAP 7.2
  • RHSA-2020:0567 Released 2020-03-03 · Red Hat rating Important
    Red Hat build of Eclipse Vert.x 3.8.5 security update
    • Text-Only RHOAR
  • RHSA-2020:0605 Released 2020-02-25 · Red Hat rating Important
    Red Hat JBoss Enterprise Application Platform 7.2 security update
    • Red Hat JBoss EAP 7.2 for RHEL 6 Server eap7-netty-4.1.45-1.Final_redhat_00001.1.el6eap, eap7-netty-all-4.1.45-1.Final_redhat_00001.1.el6eap
    • Red Hat JBoss EAP 7.2 for RHEL 7 Server eap7-netty-4.1.45-1.Final_redhat_00001.1.el7eap, eap7-netty-all-4.1.45-1.Final_redhat_00001.1.el7eap
    • Red Hat JBoss EAP 7.2 for RHEL 8 eap7-netty-4.1.45-1.Final_redhat_00001.1.el8eap, eap7-netty-all-4.1.45-1.Final_redhat_00001.1.el8eap
  • RHSA-2020:0606 Released 2020-02-25 · Red Hat rating Important
    Red Hat JBoss Enterprise Application Platform 7.2 security update
    • Red Hat JBoss EAP 7.2
  • RHSA-2020:0601 Released 2020-02-25 · Red Hat rating Important
    AMQ Clients 2.6.0 Release
    • Red Hat AMQ Clients 2 nodejs-rhea-1.0.16-1.el8, python-qpid-proton-0.30.0-2.el7, python-qpid-proton-0.30.0-4.el6_10 +32
  • RHSA-2020:0497 Released 2020-02-13 · Red Hat rating Important
    AMQ Online security update
    • Red Hat AMQ Online 1.3.3 GA

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat BPM Suite 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise MRG 3AffectedNo fix planned: Out of support scope
Red Hat JBoss A-MQ 6AffectedNo fix planned: Out of support scope
Red Hat JBoss BRMS 6AffectedNo fix planned: Out of support scope
Red Hat JBoss Data Virtualization 6AffectedNo fix planned: Out of support scope
Red Hat JBoss Enterprise Application Platform 5AffectedNo fix planned: Out of support scope
Red Hat JBoss Enterprise Application Platform 6AffectedNo fix planned: Out of support scope
Red Hat JBoss Fuse 6AffectedNo fix planned: Out of support scope
Red Hat JBoss Fuse Service Works 6AffectedNo fix planned: Out of support scope
Red Hat JBoss Operations Network 3AffectedNo fix planned: Will not fix
Red Hat JBoss SOA Platform 5AffectedNo fix planned: Out of support scope
Red Hat OpenShift Application RuntimesAffectedNo fix yet
Red Hat OpenShift Container Platform 3.11AffectedNo fix planned: Will not fix
Red Hat OpenShift Container Platform 4AffectedNo fix planned: Will not fix
EAP-CD 19 Tech PreviewFixed RHSA-2020:2333
Red Hat AMQFixed RHSA-2020:0922
Red Hat AMQ 7.4.3Fixed RHSA-2020:1445
Red Hat AMQ Clients 2Fixed RHSA-2020:0601
Red Hat AMQ Online 1.3.3 GAFixed RHSA-2020:0497
Red Hat AMQ Streams 1Fixed RHSA-2020:0939
Red Hat Data Grid 7.3.6Fixed RHSA-2020:2321
Red Hat Decision Manager 7Fixed RHSA-2020:3196
Red Hat Fuse 7.7.0Fixed RHSA-2020:3192
Red Hat JBoss EAP 7.2Fixed RHSA-2020:0606
Red Hat JBoss EAP 7.2 for RHEL 6 ServerFixed RHSA-2020:0605, RHSA-2020:0804
Red Hat JBoss EAP 7.2 for RHEL 7 ServerFixed RHSA-2020:0605, RHSA-2020:0805
Red Hat JBoss EAP 7.2 for RHEL 8Fixed RHSA-2020:0605, RHSA-2020:0806
Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 ServerFixed RHSA-2024:10208
Red Hat Process Automation 7Fixed RHSA-2020:3197
Red Hat Satellite 6.8Fixed RHSA-2020:4366
Red Hat Satellite Capsule 6.8Fixed RHSA-2020:4366
Red Hat Single Sign-On 7.3Fixed RHSA-2020:0951
Text-Only RHOARFixed RHSA-2020:0567
Not affected: 2 products
  • Red Hat OpenStack Platform 10 (Newton)
  • Red Hat OpenStack Platform 13 (Queens)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-7238
  2. 2026-10-03 Alias added: GHSA-ff2w-cq2g-wv5f

References

Exploit 1

Advisory 16

Other 8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences