USN-4972-1: PostgreSQL vulnerabilities
Tom Lane discovered that PostgreSQL incorrect handled certain array
subscripting calculations. An authenticated attacker could possibly use
this issue to overwrite server memory and escalate privileges.
(CVE-2021-32027)
Andres Freund discovered that PostgreSQL incorrect handled certain
INSERT … ON CONFLICT … DO UPDATE commands. A remote attacker could
possibly use this issue to read server memory and obtain sensitive
information. (CVE-2021-32028)
Tom Lane discovered that PostgreSQL incorrect handled certain UPDATE …
RETURNING commands. A remote attacker could possibly use this issue to read
server memory and obtain sensitive information. This issue only affected
Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-32029)
Source: USN-4972-1: PostgreSQL vulnerabilities
