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CVE-2021-37137

Published: 19 October 2021

The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage. Beside this it also may buffer reserved skippable chunks until the whole chunk was received which may lead to excessive memory usage as well. This vulnerability can be triggered by supplying malicious input that decompresses to a very big size (via a network stream or a file) or by sending a huge skippable chunk.

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+esm2)
Available with Ubuntu Pro
focal
Released (1:4.1.45-1ubuntu0.1~esm1)
Available with Ubuntu Pro
hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy
Released (1:4.1.48-4+deb11u1build0.22.04.1)
kinetic
Released (1:4.1.48-5ubuntu0.1)
lunar Ignored
(end of life, was needs-triage)
mantic Needs triage

noble Needs triage

trusty Needs triage

upstream Needs triage

xenial
Released (1:4.0.34-1ubuntu0.1~esm1)
Available with Ubuntu Pro

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