CVE-2023-5870

Postgresql: role pg_signal_backend can signal certain superuser processes.

Published Dec 10, 2023 CVSS 3.1 · 2.2 Low EPSS 2.6% KEV · Not listed
Description
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.

Remediation

Vendor Workaround

Mitigation 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.

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3651-1 postgresql-11 security update
Debian DSA Debian DSA DSA-5553-1 postgresql-15 security update
Debian DSA Debian DSA DSA-5554-1 postgresql-13 security update
EUVD EUVD EUVD-2023-58144 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.
Ubuntu USN Ubuntu USN USN-6538-1 PostgreSQL vulnerabilities
Ubuntu USN Ubuntu USN USN-6538-2 PostgreSQL vulnerabilities
Ubuntu USN Ubuntu USN USN-6570-1 PostgreSQL vulnerabilities
References
Link Providers
https://access.redhat.com/errata/RHSA-2023:7545 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7579 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7580 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7581 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7616 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7656 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7666 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7667 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7694 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7695 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7714 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7770 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7772 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7784 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7785 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7883 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7884 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7885 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2024:0304 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2024:0332 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2024:0337 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2023-5870 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2247170 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2023/11/msg00007.html cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-5870 cve-icon
https://security.netapp.com/advisory/ntap-20240119-0003/ cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-5870 cve-icon
https://www.postgresql.org/about/news/postgresql-161-155-1410-1313-1217-and-1122-released-2749/ cve-icon cve-icon cve-icon
https://www.postgresql.org/support/security/CVE-2023-5870/ cve-icon cve-icon cve-icon
History
Type Values Removed Values Added
First Time appeared Redhat rhel Els
CPEs cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
cpe:/o:redhat:rhel_els:6
cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel Els
Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:9
Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:9
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 6, 2026, 1:40 PM
Reserved
Oct 31, 2023, 3:56 AM
Status
Modified
Published
Dec 10, 2023, 6:15 PM
Modified
Nov 6, 2026, 2:16 PM
Severity
Low
Public date
Nov 9, 2023, 12:00 AM