CVE-2022-21603: 
Oracle Database Server vulnerability analysis and mitigation

The vulnerability CVE-2022-21603 affects the Oracle Database - Sharding component of Oracle Database Server versions 19c and 21c. It is a security flaw that allows high-privileged attackers with Local Logon privilege and network access via Local Logon to potentially compromise the Oracle Database - Sharding component (Oracle CPU Oct 2022).

The vulnerability is characterized by a CVSS v3.1 Base Score of 7.2 (High severity), with the vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. This indicates that the vulnerability is easily exploitable, requires high privileges, no user interaction, and can affect confidentiality, integrity, and availability of the system (CVE Mitre).

Successful exploitation of this vulnerability can result in complete takeover of Oracle Database - Sharding component. This means an attacker could potentially gain unauthorized access to all aspects of the affected component, including the ability to view, modify, or delete data, and potentially disrupt service availability (Oracle CPU Oct 2022).

Oracle has released patches to address this vulnerability as part of the October 2022 Critical Patch Update. Oracle strongly recommends that customers apply Critical Patch Update security patches as soon as possible. The patches are available for Oracle Database Server versions 19c and 21c (Oracle CPU Oct 2022).