USN-5038-1: PostgreSQL vulnerabilities

It was discovered that the PostgresQL planner could create incorrect plans in certain circumstances. A remote attacker could use this issue to cause PostgreSQL to crash, resulting in a denial of service, or possibly obtain sensitive information from memory. This issue only affected Ubuntu 20.04 LTS and Ubuntu 21.04. (CVE-2021-3677) It was discovered that PostgreSQL incorrectly handled certain SSL renegotiation ClientHello messages from clients. A remote attacker could possibly use this issue to cause PostgreSQL to crash, resulting in a...