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01 Record

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).

UnratedPUBLISHEDCNA: redhat

CNA base scoreUnratedNo CNA CVSS vector

02 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).

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 11.26% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 95.6% of scored records. A rank, not a probability.
NVD base score: 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2017-04-13 14:00Z9 YR AGO

Last updated

2024-08-06 00:46Z2 YR AGO

Reserved

2016-05-24

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')Base

Data version

5.1

Document digest

9a1c994a8fbf5e9f49a5cd92db798d13c94becfd173e12979405703d83197a1d

05 Affected products

VendorProductVersionsPlatforms

apachecassandraNot specified—

nettynettyNot specified—

redhatjboss_amqNot specified—

redhatjboss_data_gridNot specified—

redhatjboss_data_virtualizationNot specified—

redhatjboss_enterprise_application_platformNot specified—

redhatjboss_enterprise_bpms_platformNot specified—

redhatjboss_enterprise_brms_platformNot specified—

redhatjboss_fuseNot specified—

redhatjboss_fuse_service_worksNot specified—

redhatjboss_middleware_text-only_advisoriesNot specified—

redhatjboss_operations_networkNot specified—

redhatopenshiftNot specified—

redhatopenstackNot specified—

redhatopenstack-optoolsNot specified—

redhatrhel_software_collectionsNot specified—

redhatsatelliteNot specified—

rhel_sam1Not specified—

06 References

rhn.redhat.comRHSA-2017:0179http://rhn.redhat.com/errata/RHSA-2017-0179.htmlvendor-advisoryx_refsource_REDHAT
rhn.redhat.comRHSA-2017:1097http://rhn.redhat.com/errata/RHSA-2017-1097.htmlvendor-advisoryx_refsource_REDHAT
netty.iohttp://netty.io/news/2016/06/07/4-1-1-Final.htmlx_refsource_CONFIRM
www.securityfocus.com96540http://www.securityfocus.com/bid/96540vdb-entryx_refsource_BID
github.comhttps://github.com/netty/netty/pull/5364x_refsource_CONFIRM
wiki.opendaylight.orghttps://wiki.opendaylight.org/view/Security_Advisoriesx_refsource_CONFIRM
netty.iohttp://netty.io/news/2016/06/07/4-0-37-Final.htmlx_refsource_CONFIRM
bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1343616x_refsource_CONFIRM
lists.apache.org[cassandra-commits] 20191112 [jira] [Created] (CASSANDRA-15412) Security vulnerability CVE-2016-4970 for Nettyhttps://lists.apache.org/thread.html/afaa5860e3a6d327eb96c3d82cbd2f5996de815a16854ed1ad310144%40%3Ccommits.cassandra.apache.org%3Emailing-listx_refsource_MLIST