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CVE-2016-4970

Published: 13 April 2017

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).

Notes

AuthorNote
seth-arnold
Users can use -Djdk.tls.rejectClientInitiatedRenegotiation=true to
disable renegotiation and avoid this issue.
Versions affected: Netty 4.0.0.Final - 4.0.36.Final and 4.1.0.Final

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
netty
Launchpad, Ubuntu, Debian
artful Not vulnerable
(1:4.0.37-1)
bionic Not vulnerable
(1:4.0.37-1)
cosmic Not vulnerable
(1:4.0.37-1)
disco Not vulnerable
(1:4.0.37-1)
eoan Not vulnerable
(1:4.0.37-1)
focal Not vulnerable
(1:4.0.37-1)
groovy Not vulnerable
(1:4.0.37-1)
hirsute Not vulnerable
(1:4.0.37-1)
impish Not vulnerable
(1:4.0.37-1)
jammy Not vulnerable
(1:4.0.37-1)
precise Does not exist
(precise was not-affected)
trusty Not vulnerable

upstream
Released (1:4.0.37-1)
wily Not vulnerable

xenial Needed

yakkety Not vulnerable
(1:4.0.37-1)
zesty Not vulnerable
(1:4.0.37-1)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H