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CVE-2022-36021

Published: 1 March 2023

Redis is an in-memory database that persists on disk. Authenticated users can use string matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis, causing it to hang and consume 100% CPU time. The problem is fixed in Redis versions 6.0.18, 6.2.11, 7.0.9.

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
redis
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needs-triage)
bionic
Released (5:4.0.9-1ubuntu0.2+esm4)
Available with Ubuntu Pro
lunar Ignored
(end of life, was needs-triage)
upstream
Released (6.0.18, 6.2.11, 7.0.9)
mantic Needs triage

focal
Released (5:5.0.7-2ubuntu0.1+esm2)
Available with Ubuntu Pro
jammy
Released (5:6.0.16-1ubuntu1+esm1)
Available with Ubuntu Pro
trusty
Released (2:2.8.4-2ubuntu0.2+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (2:3.0.6-1ubuntu0.4+esm2)
Available with Ubuntu Pro
Patches:
upstream: https://github.com/redis/redis/commit/dcbfcb916ca1a269b3feef86ee86835294758f84

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H