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Ubuntu Security Notice USN-5573-1

Ubuntu Security Notice USN-5573-1
Posted Aug 19, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5573-1 - Evgeny Legerov discovered that zlib incorrectly handled memory when performing certain inflate operations. An attacker could use this issue to cause rsync to crash, resulting in a denial of service, or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2022-37434
SHA-256 | b03b3ce0318bd868ddf50738bb537df9b23ce61c7a7b4046dd322b4c08706183

Ubuntu Security Notice USN-5573-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5573-1
August 18, 2022

rsync vulnerability
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM

Summary:

rsync could be made to crash or run programs if it received specially
crafted input.

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

Details:

Evgeny Legerov discovered that zlib incorrectly handled memory when
performing certain inflate operations. An attacker could use this issue
to cause rsync to crash, resulting in a denial of service, or possibly
execute arbitrary code.

Update instructions:

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

Ubuntu 20.04 LTS:
rsync 3.1.3-8ubuntu0.4

Ubuntu 18.04 LTS:
rsync 3.1.2-2.1ubuntu1.5

Ubuntu 16.04 ESM:
rsync 3.1.1-3ubuntu1.3+esm2

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

References:
https://ubuntu.com/security/notices/USN-5573-1
CVE-2022-37434

Package Information:
https://launchpad.net/ubuntu/+source/rsync/3.1.3-8ubuntu0.4
https://launchpad.net/ubuntu/+source/rsync/3.1.2-2.1ubuntu1.5
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