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Ubuntu Security Notice USN-6112-1

Ubuntu Security Notice USN-6112-1
Posted May 30, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6112-1 - 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
systems | linux, ubuntu
advisories | CVE-2023-31484
SHA-256 | 2cf6be1799272567464ae27a04638f2c3ef401074d8a57989082ac295dc2119b

Ubuntu Security Notice USN-6112-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6112-1
May 29, 2023

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

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)

Summary:

Perl could be made to install modules from untrusted sources.

Software Description:
- perl: Practical Extraction and Report Language

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 18.04 LTS:
perl 5.26.1-6ubuntu0.7

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
perl 5.22.1-9ubuntu0.9+esm2

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
perl 5.18.2-2ubuntu1.7+esm5

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

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

Package Information:
https://launchpad.net/ubuntu/+source/perl/5.26.1-6ubuntu0.7

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