========================================================================== Ubuntu Security Notice USN-4957-2 May 18, 2021
djvulibre vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 ESM Summary: Several security issues were fixed in DjVuLibre. Software Description: - djvulibre: DjVu image format library and tools Details: USN-4957-1 fixed several vulnerabilities in DjVuLibre. This update provides the corresponding update for Ubuntu 16.04 ESM. Original advisory 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 16.04 ESM: libdjvulibre21 3.5.27.1-5ubuntu0.1+esm1 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-4957-2 https://ubuntu.com/security/notices/USN-4957-1 CVE-2021-32490, CVE-2021-32491, CVE-2021-32492, CVE-2021-32493, CVE-2021-3500
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