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CVE-2020-11612

Published: 7 April 2020

The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker could send a large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
netty
Launchpad, Ubuntu, Debian
bionic
Released (1:4.1.7-4ubuntu0.1)
eoan Ignored
(reached end-of-life)
focal Needs triage

groovy Not vulnerable
(1:4.1.48-1)
hirsute Not vulnerable
(1:4.1.48-1)
impish Not vulnerable
(1:4.1.48-1)
jammy Not vulnerable
(1:4.1.48-1)
kinetic Not vulnerable
(1:4.1.48-1)
precise Does not exist

trusty Needs triage

upstream
Released (1:4.1.48-1)
xenial Needs triage

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