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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
4.4/10

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
2.56%

83.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
PostgresqlPostgresql>= 11.0, < 11.22
PostgresqlPostgresql>= 12.0, < 12.17
PostgresqlPostgresql>= 13.0, < 13.13
PostgresqlPostgresql>= 14.0, < 14.10
PostgresqlPostgresql>= 15.0, < 15.5
PostgresqlPostgresql16.0
RedhatCodeready Linux Builder Eus9.2
RedhatCodeready Linux Builder Eus For Power Little Endian Eus9.0_ppc64le
RedhatCodeready Linux Builder Eus For Power Little Endian Eus9.2_ppc64le
RedhatCodeready Linux Builder For Arm64 Eus8.6_aarch64
RedhatCodeready Linux Builder For Arm64 Eus9.0_aarch64
RedhatCodeready Linux Builder For Arm64 Eus9.2_aarch64
RedhatCodeready Linux Builder For Ibm Z Systems Eus9.0_s390x
RedhatCodeready Linux Builder For Ibm Z Systems Eus9.2_s390x
RedhatCodeready Linux Builder For Power Little Endian Eus9.0_ppc64le
RedhatCodeready Linux Builder For Power Little Endian Eus9.2_ppc64le
RedhatSoftware Collections1.0
RedhatEnterprise Linux8.0
RedhatEnterprise Linux9.0
RedhatEnterprise Linux Eus8.6
RedhatEnterprise Linux Eus8.8
RedhatEnterprise Linux Eus9.0
RedhatEnterprise Linux Eus9.2
RedhatEnterprise Linux For Arm 648.0
RedhatEnterprise Linux For Arm 648.8_aarch64
RedhatEnterprise Linux For Ibm Z Systems8.0_s390x
RedhatEnterprise Linux For Ibm Z Systems Eus8.6_s390x
RedhatEnterprise Linux For Ibm Z Systems Eus8.8_s390x
RedhatEnterprise Linux For Ibm Z Systems Eus9.0_s390x
RedhatEnterprise Linux For Ibm Z Systems Eus9.2_s390x
RedhatEnterprise Linux For Power Little Endian8.0_ppc64le
RedhatEnterprise Linux For Power Little Endian Eus8.6_ppc64le
RedhatEnterprise Linux For Power Little Endian Eus8.8_ppc64le
RedhatEnterprise Linux For Power Little Endian Eus9.0_ppc64le
RedhatEnterprise Linux For Power Little Endian Eus9.2_ppc64le
RedhatEnterprise Linux Server Aus8.2
RedhatEnterprise Linux Server Aus8.4
RedhatEnterprise Linux Server Aus8.6
RedhatEnterprise Linux Server Aus9.2
RedhatEnterprise Linux Server Tus8.2
RedhatEnterprise Linux Server Tus8.4
RedhatEnterprise Linux Server Tus8.6

References

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.

Are you affected by CVE-2023-5870?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST