{"id":"CVE-2023-5870","title":"Postgresql: role pg_signal_backend can signal certain superuser processes.","summary":"A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core…","severity":"low","cvss":2.2,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L","cvssSource":"cna","cwe":["CWE-400"],"vendor":"Red Hat","product":"advanced-cluster-security/rhacs-central-db-rhel8","affected":["advanced-cluster-security/rhacs-central-db-rhel8 (all versions)","advanced-cluster-security/rhacs-main-rhel8 (all versions)","advanced-cluster-security/rhacs-operator-bundle (all versions)","advanced-cluster-security/rhacs-scanner-db-rhel8 (all versions)","advanced-cluster-security/rhacs-scanner-db-slim-rhel8 (all versions)","postgresql:13 (all versions)","postgresql:12 (all versions)","postgresql:15 (all versions)","postgresql:12 (all versions)","postgresql:12 (all versions)","postgresql:12 (all versions)","postgresql:12 (all versions)","postgresql:13 (all versions)","postgresql:12 (all versions)","postgresql:13 (all versions)","postgresql:12 (all versions)","postgresql:13 (all versions)","postgresql:13 (all versions)","postgresql:12 (all versions)","postgresql:13 (all versions)","postgresql:12 (all versions)","postgresql:15 (all versions)","postgresql (all versions)","postgresql:15 (all versions)","postgresql (all versions)","postgresql (all versions)","postgresql:15 (all versions)","rh-postgresql12-postgresql (all versions)","rh-postgresql13-postgresql (all versions)","advanced-cluster-security/rhacs-central-db-rhel8 (all versions)","advanced-cluster-security/rhacs-main-rhel8 (all versions)","advanced-cluster-security/rhacs-operator-bundle (all versions)","advanced-cluster-security/rhacs-scanner-db-rhel8 (all versions)","advanced-cluster-security/rhacs-scanner-db-slim-rhel8 (all versions)","advanced-cluster-security/rhacs-central-db-rhel8 (all versions)","advanced-cluster-security/rhacs-main-rhel8 (all versions)","advanced-cluster-security/rhacs-operator-bundle (all versions)","advanced-cluster-security/rhacs-scanner-db-rhel8 (all versions)","advanced-cluster-security/rhacs-scanner-db-slim-rhel8 (all versions)","postgresql","postgresql (all versions)","postgresql:10/postgresql (all versions)","postgresql:16/postgresql","postgresql:16/postgresql","rh-postgresql10-postgresql (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2023-12-19T19:42:25.492582Z"},"published":"2023-12-10","updated":"2026-11-06","sourceUpdated":"2026-11-06T13:40:03.104Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-5870","references":[{"url":"https://access.redhat.com/errata/RHSA-2023:7545","label":"RHSA-2023:7545"},{"url":"https://access.redhat.com/errata/RHSA-2023:7579","label":"RHSA-2023:7579"},{"url":"https://access.redhat.com/errata/RHSA-2023:7580","label":"RHSA-2023:7580"},{"url":"https://access.redhat.com/errata/RHSA-2023:7581","label":"RHSA-2023:7581"},{"url":"https://access.redhat.com/errata/RHSA-2023:7616","label":"RHSA-2023:7616"},{"url":"https://access.redhat.com/errata/RHSA-2023:7656","label":"RHSA-2023:7656"},{"url":"https://access.redhat.com/errata/RHSA-2023:7666","label":"RHSA-2023:7666"},{"url":"https://access.redhat.com/errata/RHSA-2023:7667","label":"RHSA-2023:7667"},{"url":"https://access.redhat.com/errata/RHSA-2023:7694","label":"RHSA-2023:7694"},{"url":"https://access.redhat.com/errata/RHSA-2023:7695","label":"RHSA-2023:7695"},{"url":"https://access.redhat.com/errata/RHSA-2023:7714","label":"RHSA-2023:7714"},{"url":"https://access.redhat.com/errata/RHSA-2023:7770","label":"RHSA-2023:7770"},{"url":"https://access.redhat.com/errata/RHSA-2023:7772","label":"RHSA-2023:7772"},{"url":"https://access.redhat.com/errata/RHSA-2023:7784","label":"RHSA-2023:7784"},{"url":"https://access.redhat.com/errata/RHSA-2023:7785","label":"RHSA-2023:7785"},{"url":"https://access.redhat.com/errata/RHSA-2023:7883","label":"RHSA-2023:7883"},{"url":"https://access.redhat.com/errata/RHSA-2023:7884","label":"RHSA-2023:7884"},{"url":"https://access.redhat.com/errata/RHSA-2023:7885","label":"RHSA-2023:7885"},{"url":"https://access.redhat.com/errata/RHSA-2024:0304","label":"RHSA-2024:0304"},{"url":"https://access.redhat.com/errata/RHSA-2024:0332","label":"RHSA-2024:0332"},{"url":"https://access.redhat.com/errata/RHSA-2024:0337","label":"RHSA-2024:0337"},{"url":"https://access.redhat.com/security/cve/CVE-2023-5870"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2247170","label":"RHBZ#2247170"},{"url":"https://www.postgresql.org/about/news/postgresql-161-155-1410-1313-1217-and-1122-released-2749/"},{"url":"https://www.postgresql.org/support/security/CVE-2023-5870/"}],"tags":["cve.org"],"epss":0.02555,"epssPercentile":0.85154,"ingestedAt":"2026-11-06T13:52:17.106Z","slug":"CVE-2023-5870","body":"## Overview\n\nA flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core extension with a less-resilient background worker and would affect that specific background worker only. This issue may allow a remote high privileged user to launch a denial of service (DoS) attack.\n\n## Affected\n\n- `advanced-cluster-security/rhacs-central-db-rhel8 (all versions)`\n- `advanced-cluster-security/rhacs-main-rhel8 (all versions)`\n- `advanced-cluster-security/rhacs-operator-bundle (all versions)`\n- `advanced-cluster-security/rhacs-scanner-db-rhel8 (all versions)`\n- `advanced-cluster-security/rhacs-scanner-db-slim-rhel8 (all versions)`\n- `postgresql:13 (all versions)`\n- `postgresql:12 (all versions)`\n- `postgresql:15 (all versions)`\n- `postgresql:12 (all versions)`\n- `postgresql:12 (all versions)`\n- `postgresql:12 (all versions)`\n- `postgresql:12 (all versions)`\n- `postgresql:13 (all versions)`\n- `postgresql:12 (all versions)`\n- `postgresql:13 (all versions)`\n- `postgresql:12 (all versions)`\n- `postgresql:13 (all versions)`\n- `postgresql:13 (all versions)`\n- `postgresql:12 (all versions)`\n- `postgresql:13 (all versions)`\n- `postgresql:12 (all versions)`\n- `postgresql:15 (all versions)`\n- `postgresql (all versions)`\n- `postgresql:15 (all versions)`\n- `postgresql (all versions)`\n- `postgresql (all versions)`\n- `postgresql:15 (all versions)`\n- `rh-postgresql12-postgresql (all versions)`\n- `rh-postgresql13-postgresql (all versions)`\n- `advanced-cluster-security/rhacs-central-db-rhel8 (all versions)`\n- `advanced-cluster-security/rhacs-main-rhel8 (all versions)`\n- `advanced-cluster-security/rhacs-operator-bundle (all versions)`\n- `advanced-cluster-security/rhacs-scanner-db-rhel8 (all versions)`\n- `advanced-cluster-security/rhacs-scanner-db-slim-rhel8 (all versions)`\n- `advanced-cluster-security/rhacs-central-db-rhel8 (all versions)`\n- `advanced-cluster-security/rhacs-main-rhel8 (all versions)`\n- `advanced-cluster-security/rhacs-operator-bundle (all versions)`\n- `advanced-cluster-security/rhacs-scanner-db-rhel8 (all versions)`\n- `advanced-cluster-security/rhacs-scanner-db-slim-rhel8 (all versions)`\n- `postgresql`\n- `postgresql (all versions)`\n- `postgresql:10/postgresql (all versions)`\n- `postgresql:16/postgresql`\n- `postgresql:16/postgresql`\n- `rh-postgresql10-postgresql (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.","depth":"sunlit","depthScore":13,"depthScoreParts":{"impact":12.1,"likelihood":0.5,"exploitation":0,"ransomware":0},"changes":[]}