{"id":"USN-5223-1","summary":"apache-log4j1.2 vulnerability","details":"It was discovered that Apache Log4j 1.2 was vulnerable to deserialization of\nuntrusted data if the configuration file was editable. An attacker could use\nthis vulnerability to cause a DoS or possibly execute arbitrary code.\n","modified":"2026-02-10T04:42:25Z","published":"2022-01-12T19:31:51Z","related":["UBUNTU-CVE-2021-4104"],"upstream":["CVE-2021-4104","UBUNTU-CVE-2021-4104"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5223-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-4104"}],"affected":[{"package":{"name":"apache-log4j1.2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/apache-log4j1.2@1.2.17-8+deb10u1ubuntu0.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.17-8+deb10u1ubuntu0.1"}]}],"versions":["1.2.17-7ubuntu2","1.2.17-8","1.2.17-8+deb10u1build0.18.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.17-8+deb10u1ubuntu0.1","binary_name":"liblog4j1.2-java"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-4104"}],"ecosystem":"Ubuntu:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5223-1.json"}},{"package":{"name":"apache-log4j1.2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/apache-log4j1.2@1.2.17-9ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.17-9ubuntu0.1"}]}],"versions":["1.2.17-8","1.2.17-9"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.17-9ubuntu0.1","binary_name":"liblog4j1.2-java"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-4104"}],"ecosystem":"Ubuntu:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5223-1.json"}}],"schema_version":"1.7.3"}