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Ubuntu Security Notice USN-6112-2

Ubuntu Security Notice USN-6112-2
Posted Jun 5, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6112-2 - USN-6112-1 fixed vulnerabilities in Perl. This update provides the corresponding updates for Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 22.10, and Ubuntu 23.04. It was discovered that Perl was not properly verifying TLS certificates when using CPAN together with HTTP::Tiny to download modules over HTTPS. If a remote attacker were able to intercept communications, this flaw could potentially be used to install altered modules.

tags | advisory, remote, web, perl, vulnerability
systems | linux, ubuntu
advisories | CVE-2023-31484
SHA-256 | 88d292c5cea590c61b6c43300276011b2ed5acec94fe889627c267568b5a9cf4

Ubuntu Security Notice USN-6112-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6112-2
June 05, 2023

perl vulnerability
==========================================================================

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

- Ubuntu 23.04
- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Perl could be made to install modules from untrusted sources.

Software Description:
- perl: Practical Extraction and Report Language

Details:

USN-6112-1 fixed vulnerabilities in Perl. This update provides the
corresponding updates for Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu
22.10, and Ubuntu 23.04.

Original advisory details:

It was discovered that Perl was not properly verifying TLS certificates
when using CPAN together with HTTP::Tiny to download modules over HTTPS.
If a remote attacker were able to intercept communications, this flaw
could potentially be used to install altered modules.

Update instructions:

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

Ubuntu 23.04:
perl 5.36.0-7ubuntu0.23.04.1

Ubuntu 22.10:
perl 5.34.0-5ubuntu1.2

Ubuntu 22.04 LTS:
perl 5.34.0-3ubuntu1.2

Ubuntu 20.04 LTS:
perl 5.30.0-9ubuntu0.4

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

References:
https://ubuntu.com/security/notices/USN-6112-2
https://ubuntu.com/security/notices/USN-6112-1
CVE-2023-31484

Package Information:
https://launchpad.net/ubuntu/+source/perl/5.36.0-7ubuntu0.23.04.1
https://launchpad.net/ubuntu/+source/perl/5.34.0-5ubuntu1.2
https://launchpad.net/ubuntu/+source/perl/5.34.0-3ubuntu1.2
https://launchpad.net/ubuntu/+source/perl/5.30.0-9ubuntu0.4

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