{"id":"UBUNTU-CVE-2023-5870","details":"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 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.","modified":"2026-04-22T14:34:26.178195Z","published":"2023-11-15T00:00:00Z","related":["USN-6538-1","USN-6538-2","USN-6570-1"],"upstream":["CVE-2023-5870"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-5870"},{"type":"REPORT","url":"https://www.postgresql.org/support/security/CVE-2023-5870/"},{"type":"REPORT","url":"https://www.postgresql.org/about/news/postgresql-161-155-1410-1313-1217-and-1122-released-2749/"},{"type":"REPORT","url":"https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=e082734c8e78e6622a0422e612a870278721e83f"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6538-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6570-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6538-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-5870"}],"affected":[{"package":{"name":"postgresql-9.3","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/postgresql-9.3@9.3.24-0ubuntu0.14.04+esm1?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.3.1-1","9.3.2-1","9.3.2-1ubuntu1","9.3.2-1ubuntu2","9.3.3-1","9.3.3-1bzr1","9.3.3-1bzr2","9.3.4-1","9.3.5-0ubuntu0.14.04.1","9.3.6-0ubuntu0.14.04","9.3.7-0ubuntu0.14.04","9.3.8-0ubuntu0.4.04","9.3.9-0ubuntu0.14.04","9.3.10-0ubuntu0.14.04","9.3.11-0ubuntu0.14.04","9.3.12-0ubuntu0.14.04","9.3.13-0ubuntu0.14.04","9.3.14-0ubuntu0.14.04","9.3.15-0ubuntu0.14.04","9.3.16-0ubuntu0.14.04","9.3.17-0ubuntu0.14.04","9.3.18-0ubuntu0.14.04.1","9.3.19-0ubuntu0.14.04","9.3.20-0ubuntu0.14.04","9.3.21-0ubuntu0.14.04","9.3.22-0ubuntu0.14.04","9.3.23-0ubuntu0.14.04","9.3.24-0ubuntu0.14.04","9.3.24-0ubuntu0.14.04+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"libecpg-compat3"},{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"libecpg6"},{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"libpgtypes3"},{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"libpq5"},{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"postgresql-9.3"},{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"postgresql-client-9.3"},{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"postgresql-contrib-9.3"},{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"postgresql-doc-9.3"},{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"postgresql-plperl-9.3"},{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"postgresql-plpython-9.3"},{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"postgresql-plpython3-9.3"},{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"postgresql-pltcl-9.3"},{"binary_version":"9.3.24-0ubuntu0.14.04+esm1","binary_name":"postgresql-server-dev-9.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-5870.json"}},{"package":{"name":"postgresql-9.5","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/postgresql-9.5@9.5.25-0ubuntu0.16.04.1+esm6?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.5.25-0ubuntu0.16.04.1+esm6"}]}],"versions":["9.5.0-1","9.5.0-2","9.5.0-3","9.5.1-1","9.5.2-1","9.5.3-0ubuntu0.16.04","9.5.4-0ubuntu0.16.04","9.5.5-0ubuntu0.16.04","9.5.6-0ubuntu0.16.04","9.5.7-0ubuntu0.16.04","9.5.8-0ubuntu0.16.04.1","9.5.9-0ubuntu0.16.04","9.5.10-0ubuntu0.16.04","9.5.11-0ubuntu0.16.04","9.5.12-0ubuntu0.16.04","9.5.13-0ubuntu0.16.04","9.5.14-0ubuntu0.16.04","9.5.16-0ubuntu0.16.04.1","9.5.17-0ubuntu0.16.04.1","9.5.18-0ubuntu0.16.04.1","9.5.19-0ubuntu0.16.04.1","9.5.21-0ubuntu0.16.04.1","9.5.23-0ubuntu0.16.04.1","9.5.24-0ubuntu0.16.04.1","9.5.25-0ubuntu0.16.04.1","9.5.25-0ubuntu0.16.04.1+esm1","9.5.25-0ubuntu0.16.04.1+esm2","9.5.25-0ubuntu0.16.04.1+esm3","9.5.25-0ubuntu0.16.04.1+esm4","9.5.25-0ubuntu0.16.04.1+esm5"],"ecosystem_specific":{"availability":"Available 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