{"id":"UBUNTU-CVE-2019-17571","details":"Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17.","modified":"2026-05-29T18:00:14.657335905Z","published":"2019-12-20T17:15:00Z","related":["USN-4495-1","USN-5998-1"],"upstream":["CVE-2019-17571"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-17571"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/eea03d504b36e8f870e8321d908e1def1addda16adda04327fe7c125%40%3Cdev.logging.apache.org%3E"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4495-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5998-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-17571"}],"affected":[{"package":{"name":"apache-log4j1.2","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/apache-log4j1.2?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.17-3ubuntu1","1.2.17-4ubuntu1","1.2.17-4ubuntu2","1.2.17-4ubuntu3","1.2.17-4ubuntu3+esm1","1.2.17-4ubuntu3+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.17-4ubuntu3+esm2","binary_name":"liblog4j1.2-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-17571.json"}},{"package":{"name":"apache-log4j1.2","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/apache-log4j1.2?arch=source&distro=esm-apps%2Fxenial"},"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/cve/2019/UBUNTU-CVE-2019-17571.json"}},{"package":{"name":"apache-log4j1.2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/apache-log4j1.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.17-8+deb10u1build0.18.04.1"}]}],"versions":["1.2.17-7ubuntu2","1.2.17-8"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.17-8+deb10u1build0.18.04.1","binary_name":"liblog4j1.2-java"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-17571.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}