Resource exhaustion in PostgreSQL
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.2 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.026 (84.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000
Affected products
- PostgreSQL — versions 16.0
- Red Hat Advanced Cluster Security 4.2 — versions 4.2.4-6, 4.2.4-7
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 8090020231114113712.a75119d5, 8090020231128173330.a75119d5, 8090020231114113548.a75119d5
- Red Hat Enterprise Linux 8.2 Advanced Update Support — versions 8020020231128165246.4cda2c84
- Red Hat Enterprise Linux 8.2 Telecommunications Update Service — versions 8020020231128165246.4cda2c84
- Red Hat Enterprise Linux 8.2 Update Services For SAP Solutions — versions 8020020231128165246.4cda2c84
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support — versions 8040020231127153301.522a0ee4, 8040020231127154806.522a0ee4
- Red Hat Enterprise Linux 8.4 Telecommunications Update Service — versions 8040020231127153301.522a0ee4, 8040020231127154806.522a0ee4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2023:7545 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7579 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7580 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7581 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7616 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7656 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7666 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7667 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7694 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7695 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-5870?
- CVE-2023-5870 is a low-severity vulnerability in PostgreSQL, classified under Uncontrolled Resource Consumption. CVSS score: 2.2/10. Published 2023-12-10.
- How severe is CVE-2023-5870?
- Low severity. CVSS v3 base score is 2.2 out of 10.
- Is CVE-2023-5870 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.