CVE-2023-5870
MEDIUMCVSS 4.4/10EPSS 2.56%
Last modified
CVE-2023-5870 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. 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. EPSS estimates a 2.56% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Postgresql | Postgresql | >= 11.0, < 11.22 |
| Postgresql | Postgresql | >= 12.0, < 12.17 |
| Postgresql | Postgresql | >= 13.0, < 13.13 |
| Postgresql | Postgresql | >= 14.0, < 14.10 |
| Postgresql | Postgresql | >= 15.0, < 15.5 |
| Postgresql | Postgresql | 16.0 |
| Redhat | Codeready Linux Builder Eus | 9.2 |
| Redhat | Codeready Linux Builder Eus For Power Little Endian Eus | 9.0_ppc64le |
| Redhat | Codeready Linux Builder Eus For Power Little Endian Eus | 9.2_ppc64le |
| Redhat | Codeready Linux Builder For Arm64 Eus | 8.6_aarch64 |
| Redhat | Codeready Linux Builder For Arm64 Eus | 9.0_aarch64 |
| Redhat | Codeready Linux Builder For Arm64 Eus | 9.2_aarch64 |
| Redhat | Codeready Linux Builder For Ibm Z Systems Eus | 9.0_s390x |
| Redhat | Codeready Linux Builder For Ibm Z Systems Eus | 9.2_s390x |
| Redhat | Codeready Linux Builder For Power Little Endian Eus | 9.0_ppc64le |
| Redhat | Codeready Linux Builder For Power Little Endian Eus | 9.2_ppc64le |
| Redhat | Software Collections | 1.0 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux | 9.0 |
| Redhat | Enterprise Linux Eus | 8.6 |
| Redhat | Enterprise Linux Eus | 8.8 |
| Redhat | Enterprise Linux Eus | 9.0 |
| Redhat | Enterprise Linux Eus | 9.2 |
| Redhat | Enterprise Linux For Arm 64 | 8.0 |
| Redhat | Enterprise Linux For Arm 64 | 8.8_aarch64 |
| Redhat | Enterprise Linux For Ibm Z Systems | 8.0_s390x |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 8.6_s390x |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 8.8_s390x |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 9.0_s390x |
| Redhat | Enterprise Linux For Ibm Z Systems Eus | 9.2_s390x |
| Redhat | Enterprise Linux For Power Little Endian | 8.0_ppc64le |
| Redhat | Enterprise Linux For Power Little Endian Eus | 8.6_ppc64le |
| Redhat | Enterprise Linux For Power Little Endian Eus | 8.8_ppc64le |
| Redhat | Enterprise Linux For Power Little Endian Eus | 9.0_ppc64le |
| Redhat | Enterprise Linux For Power Little Endian Eus | 9.2_ppc64le |
| Redhat | Enterprise Linux Server Aus | 8.2 |
| Redhat | Enterprise Linux Server Aus | 8.4 |
| Redhat | Enterprise Linux Server Aus | 8.6 |
| Redhat | Enterprise Linux Server Aus | 9.2 |
| Redhat | Enterprise Linux Server Tus | 8.2 |
| Redhat | Enterprise Linux Server Tus | 8.4 |
| Redhat | Enterprise Linux Server Tus | 8.6 |
References
- https://access.redhat.com/errata/RHSA-2023:7545Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7579Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7580Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7581Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7616Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7656Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7666Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7667Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7694Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7695Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7714Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7770Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7772Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-5870Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2247170Issue Tracking
- https://www.postgresql.org/support/security/CVE-2023-5870/Vendor Advisory
- https://access.redhat.com/errata/RHSA-2023:7545Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7579Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7580Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7581Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7616Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7656Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7666Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7667Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7694Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7695Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7714Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7770Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7772Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-5870Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2247170Issue Tracking
- https://www.postgresql.org/support/security/CVE-2023-5870/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-5870?
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.
How severe is CVE-2023-5870?
CVE-2023-5870 has a CVSS score of 4.4/10 (MEDIUM severity). The EPSS model estimates a 2.56% probability of exploitation in the next 30 days.
How do I fix CVE-2023-5870?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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