{"id":"UBUNTU-CVE-2018-16848","details":"A Denial of Service (DoS) condition is possible in OpenStack Mistral in versions up to and including 7.0.3. Submitting a specially crafted workflow definition YAML file containing nested anchors can lead to resource exhaustion culminating in a denial of service.","modified":"2026-02-04T04:11:29.267450Z","published":"2020-06-15T15:15:00Z","related":["USN-7465-1"],"upstream":["CVE-2018-16848"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-16848"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1645332"},{"type":"REPORT","url":"https://bugs.launchpad.net/mistral/+bug/1785657"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-16848"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7465-1"}],"affected":[{"package":{"name":"mistral","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/mistral@6.0.0-0ubuntu1.1+esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-0ubuntu1.1+esm1"}]}],"versions":["5.0.0-0ubuntu1","6.0.0~b1-0ubuntu1","6.0.0~b1-0ubuntu2","6.0.0~b2-0ubuntu1","6.0.0~rc1-0ubuntu1","6.0.0-0ubuntu1","6.0.0-0ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"mistral-api","binary_version":"6.0.0-0ubuntu1.1+esm1"},{"binary_name":"mistral-common","binary_version":"6.0.0-0ubuntu1.1+esm1"},{"binary_name":"mistral-engine","binary_version":"6.0.0-0ubuntu1.1+esm1"},{"binary_name":"mistral-event-engine","binary_version":"6.0.0-0ubuntu1.1+esm1"},{"binary_name":"mistral-executor","binary_version":"6.0.0-0ubuntu1.1+esm1"},{"binary_name":"python-mistral","binary_version":"6.0.0-0ubuntu1.1+esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-16848.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}