Postgresql: role pg_signal_backend can signal certain superuser processes.
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.
beschreibt (1)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2023-5870US | medium4.4 | — | ||
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 autovac… | ||||
Referenzen
Externe Belege — Patches, Meldungen, Analysen.
- https://access.redhat.com/errata/RHSA-2023:7545ADVISORY
- https://access.redhat.com/errata/RHSA-2023:7579ADVISORY
- https://access.redhat.com/errata/RHSA-2023:7580ADVISORY
- https://access.redhat.com/errata/RHSA-2023:7581ADVISORY
- https://access.redhat.com/errata/RHSA-2023:7616ADVISORY
- https://access.redhat.com/errata/RHSA-2023:7656ADVISORY
- https://access.redhat.com/errata/RHSA-2023:7666ADVISORY
- https://access.redhat.com/errata/RHSA-2023:7667ADVISORY
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