A Redis security update has been released for Ubuntu Linux 20.04 LTS and 21.10.

USN-5316-1: Redis vulnerability

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Ubuntu Security Notice USN-5316-1
March 08, 2022

redis vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.10
- Ubuntu 20.04 LTS

Summary:

Redis could be made to run programs if it received specially crafted
network traffic from an authenticated user.

Software Description:
- redis: Persistent key-value database with network interface

Details:

Reginaldo Silva discovered that due to a packaging issue, a remote attacker
with the ability to execute arbitrary Lua scripts could possibly escape the
Lua sandbox and execute arbitrary code on the host.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 21.10:
redis 5:6.0.15-1ubuntu0.1
redis-server 5:6.0.15-1ubuntu0.1

Ubuntu 20.04 LTS:
redis 5:5.0.7-2ubuntu0.1
redis-server 5:5.0.7-2ubuntu0.1

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-5316-1
CVE-2022-0543

Package Information:
  https://launchpad.net/ubuntu/+source/redis/5:6.0.15-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/redis/5:5.0.7-2ubuntu0.1