{"id":"USN-4957-2","summary":"djvulibre vulnerabilities","details":"USN-4957-1 fixed several vulnerabilities in DjVuLibre. This update provides\nthe corresponding update for Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\n It was discovered that DjVuLibre incorrectly handled certain memory\n operations. If a user or automated system were tricked into processing a\n specially crafted DjVu file, a remote attacker could cause applications\n to hang or crash, resulting in a denial of service, or possibly execute\n arbitrary code.\n","modified":"2026-06-25T13:30:35.679423820Z","published":"2021-05-18T14:39:10Z","related":["UBUNTU-CVE-2021-32490","UBUNTU-CVE-2021-32491","UBUNTU-CVE-2021-32492","UBUNTU-CVE-2021-32493","UBUNTU-CVE-2021-3500"],"upstream":["CVE-2021-32490","CVE-2021-32491","CVE-2021-32492","CVE-2021-32493","CVE-2021-3500","UBUNTU-CVE-2021-32490","UBUNTU-CVE-2021-32491","UBUNTU-CVE-2021-32492","UBUNTU-CVE-2021-32493","UBUNTU-CVE-2021-3500"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4957-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-3500"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-32490"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-32491"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-32492"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-32493"}],"affected":[{"package":{"name":"djvulibre","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/djvulibre?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.27.1-5ubuntu0.1+esm1"}]}],"versions":["3.5.27.1-3","3.5.27.1-4","3.5.27.1-5","3.5.27.1-5ubuntu0.1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"djview","binary_version":"3.5.27.1-5ubuntu0.1+esm1"},{"binary_version":"3.5.27.1-5ubuntu0.1+esm1","binary_name":"djview3"},{"binary_name":"djvulibre-bin","binary_version":"3.5.27.1-5ubuntu0.1+esm1"},{"binary_name":"djvulibre-desktop","binary_version":"3.5.27.1-5ubuntu0.1+esm1"},{"binary_name":"djvuserve","binary_version":"3.5.27.1-5ubuntu0.1+esm1"},{"binary_version":"3.5.27.1-5ubuntu0.1+esm1","binary_name":"libdjvulibre-text"},{"binary_version":"3.5.27.1-5ubuntu0.1+esm1","binary_name":"libdjvulibre21"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2021-3500"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2021-32490"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-32491"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"low"}],"id":"CVE-2021-32492"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-32493"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4957-2.json"}}],"schema_version":"1.7.5"}