handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x before…
Priority MEDIUM 46CWE-835Published · 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 fixed, 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-835.
Summary
handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x before 4.1.1.Final allows remote attackers to cause a denial of service (infinite loop).
Why it matters now
EPSS 0.11259 95th percentileScored 2026-11-07
Fix Partial io.netty:netty-handler (Maven): 4.0.37.Final, 4.1.1.FinalRed Hat: 3 advisoriesRed Hat: 4 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | io.netty:netty-handler (Maven) | 4.0.0.Alpha1 to before 4.0.37.Final | 4.0.37.Final | Patch available | GHSA-rv63-gqm8-9w8q |
| — | io.netty:netty-handler (Maven) | 4.1.0.Beta1 to before 4.1.1.Final | 4.1.1.Final | Patch available | GHSA-rv63-gqm8-9w8q |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- io.netty:netty-handler (Maven) Vendor— Affected 4.0.0.Alpha1 to before 4.0.37.Final Fixed in 4.0.37.Final Patch available GHSA-rv63-gqm8-9w8q
- io.netty:netty-handler (Maven) Vendor— Affected 4.1.0.Beta1 to before 4.1.1.Final Fixed in 4.1.1.Final Patch available GHSA-rv63-gqm8-9w8q
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* | 4.0.20 to before 4.0.37; 4.1.0 to before 4.1.1 | Vulnerable | netty |
| cpe:2.3:a:redhat:jboss_data_grid:7.1:*:*:*:*:*:*:* | 7.1 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:jboss_middleware_text-only_advisories:1.0:*:*:*:*:middleware:*:* | 1.0 | Vulnerable | Red Hat |
| cpe:2.3:a:apache:cassandra:3.11.4:*:*:*:*:*:*:* | 3.11.4 | Vulnerable | Apache |
- cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* Versions 4.0.20 to before 4.0.37; 4.1.0 to before 4.1.1 Vulnerable ·netty
- cpe:2.3:a:redhat:jboss_data_grid:7.1:*:*:*:*:*:*:* Versions 7.1 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:jboss_middleware_text-only_advisories:1.0:*:*:*:*:middleware:*:* Versions 1.0 Vulnerable ·Red Hat
- cpe:2.3:a:apache:cassandra:3.11.4:*:*:*:*:*:*:* Versions 3.11.4 Vulnerable ·Apache
Remediation
- Fix · GHSA-rv63-gqm8-9w8q io.netty:netty-handler (Maven) Fixed in 4.0.37.Final Advisory →
- Fix · GHSA-rv63-gqm8-9w8q io.netty:netty-handler (Maven) Fixed in 4.1.1.Final Advisory →
Red Hat 3 advisories
- RHSA-2020:3192 Released 2020-07-28 · Red Hat rating ImportantRed Hat Fuse 7.7.0 release and security update
- Red Hat Fuse 7.7.0
- RHSA-2017:1097 Released 2017-04-19 · Red Hat rating ModerateRed Hat JBoss Data Grid 7.1
- Red Hat JBoss Data Grid 7.1
- RHSA-2017:0179 Released 2017-01-19 · Red Hat rating ModerateRed Hat JBoss Fuse/A-MQ 6.3 security and bug fix update
- Red Hat JBoss A-MQ 6.3
- Red Hat JBoss Fuse 6.3
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 planned: Will not fix |
| Red Hat JBoss Fuse 6 | Affected | No fix yet |
| Red Hat JBoss Operations Network 3 | Affected | No fix planned: Will not fix |
| Red Hat Fuse 7.7.0 | Fixed | RHSA-2020:3192 |
| Red Hat JBoss A-MQ 6.3 | Fixed | RHSA-2017:0179 |
| Red Hat JBoss Data Grid 7.1 | Fixed | RHSA-2017:1097 |
| Red Hat JBoss Fuse 6.3 | Fixed | RHSA-2017:0179 |
Not affected: 13 products
- Red Hat BPM Suite 6
- Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) Operational Tools
- Red Hat JBoss BRMS 6
- Red Hat JBoss Data Virtualization 6
- Red Hat JBoss Enterprise Application Platform 6
- Red Hat JBoss Fuse Service Works 6
- Red Hat OpenShift Enterprise 2
- Red Hat OpenStack Platform 10 (Newton)
- Red Hat OpenStack Platform 8 (Liberty)
- Red Hat OpenStack Platform 9 (Mitaka)
- Red Hat Satellite 6
- Red Hat Software Collections
- Red Hat Subscription Asset Manager
Timeline
- 2026-10-02 Threatist record created from CVE-2016-4970
- 2026-10-03 Alias added: GHSA-rv63-gqm8-9w8q
References
Advisory 7
Sources
- CVE-2016-4970 · CVE Program
- CVE-2016-4970 · NVD
- FIRST EPSS
- GHSA-rv63-gqm8-9w8q · GitHub Advisory Database · CC BY 4.0
- CVE-2016-4970 · 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