A rsync vulnerabilities security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, 22.04 LTS, and 22.10.

USN-5921-1: rsync vulnerabilities

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Ubuntu Security Notice USN-5921-1
March 06, 2023

rsync vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

rsync could be made to overwrite files.

Software Description:
- rsync: fast, versatile, remote (and local) file-copying tool

Details:

Koen van Hove discovered that the rsync client incorrectly validated
filenames returned by servers. If a user or automated system were tricked
into connecting to a malicious server, a remote attacker could use this
issue to write arbitrary files, and possibly excalate privileges.

Update instructions:

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

Ubuntu 22.10:
rsync 3.2.7-0ubuntu0.22.10.1

Ubuntu 22.04 LTS:
rsync 3.2.7-0ubuntu0.22.04.2

Ubuntu 20.04 LTS:
rsync 3.1.3-8ubuntu0.5

Ubuntu 18.04 LTS:
rsync 3.1.2-2.1ubuntu1.6

On Ubuntu 22.04 LTS and Ubuntu 22.10, this update uses a new upstream
release, which includes additional bug fixes. In general, a standard system
update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-5921-1
CVE-2022-29154

Package Information:
https://launchpad.net/ubuntu/+source/rsync/3.2.7-0ubuntu0.22.10.1
https://launchpad.net/ubuntu/+source/rsync/3.2.7-0ubuntu0.22.04.2
https://launchpad.net/ubuntu/+source/rsync/3.1.3-8ubuntu0.5
https://launchpad.net/ubuntu/+source/rsync/3.1.2-2.1ubuntu1.6