========================================================================== Ubuntu Security Notice USN-4957-1 May 17, 2021
djvulibre vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.04 - Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in DjVuLibre. Software Description: - djvulibre: DjVu image format library and tools Details: It was discovered that DjVuLibre incorrectly handled certain memory operations. If a user or automated system were tricked into processing a specially crafted DjVu file, a remote attacker could cause applications to hang or crash, resulting in a denial of service, or possibly execute arbitrary code. 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
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