[USN-5431-1] GnuPG vulnerability


========================================================================== 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:   ubuntu.com/security/notices/USN-5431-1   CVE-2019-13050
Package Information:   launchpad.net/ubuntu/+source/gnupg2/2.2.4-1ubuntu1.5