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CVE-2023-5870

Postgresql: role pg_signal_backend can signal certain superuser processes.

Published: Dec 10, 2023Updated: Nov 4, 2025 Sources: CVE List NVD BDU csafCWE-400
NVD MITRE
2.2CVSSLOW
EPSS Score
2.6%
Top 17.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-400NVD-CWE-noinfo

Affected Products

Red Hat Advanced Cluster Security 4.2Red Hat
On-prem
Operating Systems / linux-distro
Red Hat Enterprise Linux 8Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRed Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRed Hat
On-premOS
Operating Systems / linux-distro
red hatcommercialUSOperating Systemsaka red hat
and 44 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2023:7545
access.redhat.com
https://access.redhat.com/errata/RHSA-2023:7579
access.redhat.com
https://access.redhat.com/errata/RHSA-2023:7580
access.redhat.com
and 48 more references View all →

Timeline

Published
Dec 10, 2023
Last Updated
Nov 4, 2025

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