A Perl security update has been released for Ubuntu Linux 20.04 LTS, 22.04 LTS, 23.04, and 23.10.

[USN-6517-1] Perl vulnerabilities

==========================================================================
Ubuntu Security Notice USN-6517-1
November 27, 2023

perl vulnerabilities
==========================================================================

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

- Ubuntu 23.10
- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in Perl.

Software Description:
- perl: Practical Extraction and Report Language

Details:

It was discovered that Perl incorrectly handled printing certain warning
messages. An attacker could possibly use this issue to cause Perl to
consume resources, leading to a denial of service. This issue only affected
Ubuntu 22.04 LTS. (CVE-2022-48522)

Nathan Mills discovered that Perl incorrectly handled certain regular
expressions. An attacker could use this issue to cause Perl to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2023-47038)

Update instructions:

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

Ubuntu 23.10:
perl 5.36.0-9ubuntu1.1

Ubuntu 23.04:
perl 5.36.0-7ubuntu0.23.04.2

Ubuntu 22.04 LTS:
perl 5.34.0-3ubuntu1.3

Ubuntu 20.04 LTS:
perl 5.30.0-9ubuntu0.5

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

References:
https://ubuntu.com/security/notices/USN-6517-1
CVE-2022-48522, CVE-2023-47038

Package Information:
https://launchpad.net/ubuntu/+source/perl/5.36.0-9ubuntu1.1
https://launchpad.net/ubuntu/+source/perl/5.36.0-7ubuntu0.23.04.2
https://launchpad.net/ubuntu/+source/perl/5.34.0-3ubuntu1.3
https://launchpad.net/ubuntu/+source/perl/5.30.0-9ubuntu0.5