{"id":"UBUNTU-CVE-2020-12049","details":"An issue was discovered in dbus \u003e= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.","modified":"2026-04-22T12:27:32.641373Z","published":"2020-06-08T17:15:00Z","related":["USN-4398-1","USN-4398-2"],"upstream":["CVE-2020-12049"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12049"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4398-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4398-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-12049"}],"affected":[{"package":{"name":"dbus","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/dbus@1.6.18-0ubuntu4.5+esm2?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.18-0ubuntu4.5+esm2"}]}],"versions":["1.6.12-0ubuntu10","1.6.18-0ubuntu1","1.6.18-0ubuntu2","1.6.18-0ubuntu3","1.6.18-0ubuntu4","1.6.18-0ubuntu4.1","1.6.18-0ubuntu4.2","1.6.18-0ubuntu4.3","1.6.18-0ubuntu4.4","1.6.18-0ubuntu4.5","1.6.18-0ubuntu4.5+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"dbus","binary_version":"1.6.18-0ubuntu4.5+esm2"},{"binary_name":"dbus-x11","binary_version":"1.6.18-0ubuntu4.5+esm2"},{"binary_name":"libdbus-1-3","binary_version":"1.6.18-0ubuntu4.5+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12049.json"}},{"package":{"name":"dbus","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/dbus@1.10.6-1ubuntu3.6?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.10.6-1ubuntu3.6"}]}],"versions":["1.10.0-1ubuntu1","1.10.4-1ubuntu2","1.10.6-1ubuntu1","1.10.6-1ubuntu2","1.10.6-1ubuntu3","1.10.6-1ubuntu3.1","1.10.6-1ubuntu3.3","1.10.6-1ubuntu3.4","1.10.6-1ubuntu3.5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"dbus","binary_version":"1.10.6-1ubuntu3.6"},{"binary_name":"dbus-tests","binary_version":"1.10.6-1ubuntu3.6"},{"binary_name":"dbus-user-session","binary_version":"1.10.6-1ubuntu3.6"},{"binary_name":"dbus-x11","binary_version":"1.10.6-1ubuntu3.6"},{"binary_name":"libdbus-1-3","binary_version":"1.10.6-1ubuntu3.6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12049.json"}},{"package":{"name":"dbus","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/dbus@1.12.2-1ubuntu1.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.12.2-1ubuntu1.2"}]}],"versions":["1.10.22-1ubuntu1","1.12.0-1ubuntu1","1.12.2-1ubuntu1","1.12.2-1ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"dbus","binary_version":"1.12.2-1ubuntu1.2"},{"binary_name":"dbus-tests","binary_version":"1.12.2-1ubuntu1.2"},{"binary_name":"dbus-user-session","binary_version":"1.12.2-1ubuntu1.2"},{"binary_name":"dbus-x11","binary_version":"1.12.2-1ubuntu1.2"},{"binary_name":"libdbus-1-3","binary_version":"1.12.2-1ubuntu1.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12049.json"}},{"package":{"name":"dbus","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/dbus@1.12.16-2ubuntu2.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.12.16-2ubuntu2.1"}]}],"versions":["1.12.14-1ubuntu2","1.12.16-2ubuntu1","1.12.16-2ubuntu2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"dbus","binary_version":"1.12.16-2ubuntu2.1"},{"binary_version":"1.12.16-2ubuntu2.1","binary_name":"dbus-tests"},{"binary_name":"dbus-user-session","binary_version":"1.12.16-2ubuntu2.1"},{"binary_name":"dbus-x11","binary_version":"1.12.16-2ubuntu2.1"},{"binary_name":"libdbus-1-3","binary_version":"1.12.16-2ubuntu2.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12049.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}