{"id":"USN-5223-2","summary":"apache-log4j1.2 vulnerability","details":"USN-5223-1 fixed a vulnerability in Apache Log4j 1.2. This update\nprovides the corresponding update for Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\n It was discovered that Apache Log4j 1.2 was vulnerable to deserialization of\n untrusted data if the configuration file was editable. An attacker could use\n this vulnerability to cause a DoS or possibly execute arbitrary code.\n","modified":"2026-02-10T04:42:25Z","published":"2022-02-08T21:01:33Z","related":["UBUNTU-CVE-2021-4104"],"upstream":["CVE-2021-4104","UBUNTU-CVE-2021-4104"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5223-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-4104"}],"affected":[{"package":{"name":"apache-log4j1.2","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/apache-log4j1.2@1.2.17-7ubuntu1+esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.17-7ubuntu1+esm1"}]}],"versions":["1.2.17-6ubuntu1","1.2.17-7ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.17-7ubuntu1+esm1","binary_name":"liblog4j1.2-java"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5223-2.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2021-4104"}],"ecosystem":"Ubuntu:Pro:16.04:LTS"}}}],"schema_version":"1.7.3"}