{"id":"CVE-2020-1712","title":"A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages","summary":"A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services o…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416","CWE-416"],"vendor":"systemd_project","product":"systemd","affected":["systemd <= 244","ceph_storage = 4.0","discovery","migration_toolkit = 1.0","openshift_container_platform = 4.0","enterprise_linux = 8.0","debian_linux = 9.0"],"published":"2020-03-31","updated":"2026-10-14","sourceUpdated":"2026-10-14T09:17:18.400","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-1712","references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712","label":"secalert@redhat.com"},{"url":"https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54","label":"secalert@redhat.com"},{"url":"https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb","label":"secalert@redhat.com"},{"url":"https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d","label":"secalert@redhat.com"},{"url":"https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2","label":"secalert@redhat.com"},{"url":"https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html","label":"secalert@redhat.com"},{"url":"https://www.openwall.com/lists/oss-security/2020/02/05/1","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.openwall.com/lists/oss-security/2020/02/05/1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.00456,"epssPercentile":0.37816,"ingestedAt":"2026-10-14T09:24:26.053Z","slug":"CVE-2020-1712","body":"## Overview\n\nA heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages.\n\n## Affected\n\n- `systemd <= 244`\n- `ceph_storage = 4.0`\n- `discovery`\n- `migration_toolkit = 1.0`\n- `openshift_container_platform = 4.0`\n- `enterprise_linux = 8.0`\n- `debian_linux = 9.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}