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PostgreSQL: CVE-2023-5870: Role "pg_signal_backend" can signal certain superuser processes

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PostgreSQL: CVE-2023-5870: Role "pg_signal_backend" can signal certain superuser processes

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
11/13/2023
Created
11/14/2023
Added
11/13/2023
Modified
12/19/2023

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.

Solution(s)

  • postgres-upgrade-12_17
  • postgres-upgrade-13_13
  • postgres-upgrade-14_10
  • postgres-upgrade-15_5
  • postgres-upgrade-16_1

References

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