postgresql: Role pg_signal_backend can signal certain superuser processes.

A flaw was found in PostgreSQL involving the pgcancelbackend 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...

CVE-2023-5870

Summary (CVE-2023-5870) : PostgreSQL vulnerability where the pg_cancel_backend role can signal background workers (including the autovacuum launcher and logical replication launcher). The underlying issue is that signaling is possible for non-core extensions with less-resilient background workers...

PT-2023-6889

Name of the Vulnerable Software and Affected Versions PostgreSQL affected versions not specified Description The issue is related to the pg signal backend role in PostgreSQL, which allows signaling certain superuser processes. This can be exploited by a remote high-privileged user to launch a...