CVE-2016-4970
HIGHCVSS 7.5/10EPSS 11.26%
Last modified
CVE-2016-4970 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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).. EPSS estimates a 11.26% chance of exploitation in the next 30 days.
Description
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).
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Netty | Netty | >= 4.0.20, < 4.0.37 |
| Netty | Netty | >= 4.1.0, < 4.1.1 |
| Redhat | Jboss Data Grid | 7.1 |
| Redhat | Jboss Middleware Text-Only Advisories | 1.0 |
| Apache | Cassandra | 3.11.4 |
References
- http://netty.io/news/2016/06/07/4-0-37-Final.htmlRelease Notes, Vendor Advisory
- http://netty.io/news/2016/06/07/4-1-1-Final.htmlRelease Notes, Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0179.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-1097.htmlThird Party Advisory
- http://www.securityfocus.com/bid/96540Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1343616Issue Tracking, Third Party Advisory, VDB Entry
- https://github.com/netty/netty/pull/5364Patch, Third Party Advisory
- https://wiki.opendaylight.org/view/Security_AdvisoriesThird Party Advisory
- http://netty.io/news/2016/06/07/4-0-37-Final.htmlRelease Notes, Vendor Advisory
- http://netty.io/news/2016/06/07/4-1-1-Final.htmlRelease Notes, Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0179.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-1097.htmlThird Party Advisory
- http://www.securityfocus.com/bid/96540Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1343616Issue Tracking, Third Party Advisory, VDB Entry
- https://github.com/netty/netty/pull/5364Patch, Third Party Advisory
- https://wiki.opendaylight.org/view/Security_AdvisoriesThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-4970?
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).
How severe is CVE-2016-4970?
CVE-2016-4970 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 11.26% probability of exploitation in the next 30 days.
How do I fix CVE-2016-4970?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2016-4970?
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