Home/CVE/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 t
CVE

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 t

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).

HIGH · CVSS 7.5 EPSS 0.0823
Schedule remediation
  • EPSS percentile: top 8% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

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

Affected Products & Versions

5
netty>= 4.0.20 and < 4.0.37
netty>= 4.1.0 and < 4.1.1
redhat jboss data gridall versions
redhat jboss middleware text-only advisoriesall versions
apache cassandraall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven io.netty:netty-handler HIGH fixed in 4.0.37.Final
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Apr 2017 · 02:59 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

3
rhsaRHSA-2020:3192Important
rhsaRHSA-2017:1097Moderate
rhsaRHSA-2017:0179Moderate
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://netty.io/news/2016/06/07/4-0-37-Final.htmlRelease NotesVendor Advisory
http://netty.io/news/2016/06/07/4-1-1-Final.htmlRelease NotesVendor 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 AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1343616Issue TrackingThird Party AdvisoryVDB Entry
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