Ubuntu alert USN-5431-1 (gnupg2)

From:
             
 
David Fernandez Gonzalez <david.fernandezgonzalez@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-5431-1] GnuPG vulnerability
Date:
             
 
Mon, 30 May 2022 11:17:44 +0200
Message-ID:
             
 
<cb508ed5-cd66-985f-9c0b-f0a0f91ec401@canonical.com>
==========================================================================
Ubuntu Security Notice USN-5431-1
May 30, 2022

gnupg2 vulnerability
==========================================================================

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

- Ubuntu 18.04 LTS

Summary:

GnuPG could be made to stop responding.

Software Description:
- gnupg2: GNU privacy guard - a free PGP replacement

Details:

It was discovered that GnuPG was not properly processing keys
with large amounts of signatures. An attacker could possibly
use this issue to cause a denial of service.

Update instructions:

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

Ubuntu 18.04 LTS:
   gnupg                           2.2.4-1ubuntu1.5

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

References:
   https://ubuntu.com/security/notices/USN-5431-1
   CVE-2019-13050

Package Information:
   https://launchpad.net/ubuntu/+source/gnupg2/2.2.4-1ubuntu1.5