FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

PostgreSQL server -- Memory disclosure in certain queries

Affected packages
	postgresql13-server	<	13.4
	postgresql12-server	<	12.8
	postgresql11-server	<	11.13

Details

VuXML ID	b471130b-fb86-11eb-87db-6cc21735f730
Discovery	2021-08-12
Entry	2021-08-12

The PostgreSQL Project reports:

A purpose-crafted query can read arbitrary bytes of server memory. In the default configuration, any authenticated database user can complete this attack at will. The attack does not require the ability to create objects. If server settings include max_worker_processes=0, the known versions of this attack are infeasible. However, undiscovered variants of the attack may be independent of that setting.

[source]

References

CVE Name	CVE-2021-3677
URL	https://www.postgresql.org/support/security/CVE-2021-3677/