Ubuntu 4957-1: DjVuLibre vulnerabilities
Summary
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04: libdjvulibre21 3.5.28-1ubuntu0.1 Ubuntu 20.10: libdjvulibre21 3.5.27.1-15ubuntu0.1 Ubuntu 20.04 LTS: libdjvulibre21 3.5.27.1-14ubuntu0.1 Ubuntu 18.04 LTS: libdjvulibre21 3.5.27.1-8ubuntu0.3 After a standard system update you need to reboot your computer to make all the necessary changes.
References
https://ubuntu.com/security/notices/USN-4957-1
CVE-2021-32490, CVE-2021-32491, CVE-2021-32492, CVE-2021-32493,
CVE-2021-3500
Package Information
https://launchpad.net/ubuntu/+source/djvulibre/3.5.28-1ubuntu0.1 https://launchpad.net/ubuntu/+source/djvulibre/3.5.27.1-15ubuntu0.1 https://launchpad.net/ubuntu/+source/djvulibre/3.5.27.1-14ubuntu0.1 https://launchpad.net/ubuntu/+source/djvulibre/3.5.27.1-8ubuntu0.3