In OceanBase's Oracle tenant mode, ein böswilliger Benutzer mit bestimmten Berechtigungen kann eine Rechteeskalation auf SYS-Level-Zugriff durch Ausführen sorgfältig gestalteter Befehle erreichen. Diese Schwachstelle betrifft nur

Successful exploitation of CVE-2025-8107 allows an attacker to bypass access controls and elevate their privileges to the highest level within the OceanBase database. This grants them complete control over the system, including the ability to read, modify, and delete data, execute arbitrary commands, and potentially compromise other connected systems. The impact is particularly severe because SYS-level access effectively grants root-like control over the database instance. This could lead to data breaches, denial of service, and complete system takeover. The Oracle tenant mode configuration makes this vulnerability specific and targeted, but the potential consequences are significant.

Organizations utilizing OceanBase Server in Oracle tenant mode, particularly those with complex multi-tenant deployments or legacy configurations where privilege separation may be inadequate, are at increased risk. Shared hosting environments where multiple tenants share the same OceanBase instance should also be considered high-priority targets.

• oracle / server:

SELECT user FROM dual WHERE username = 'SYS';

• oracle / server:

SELECT privilege FROM dba_tab_privs WHERE grantee = 'YOUR_TENANT_USER';

• generic web: Monitor OceanBase server logs for unusual command execution patterns or attempts to access SYS-level resources. • generic web: Review user privilege assignments within the Oracle tenant to identify any accounts with excessive permissions.

1. 2025-07-24Disclosure

   disclosure

1. Reserviert2025-07-24
2. Veröffentlicht2025-07-24
3. Geändert2025-07-31
4. EPSS aktualisiert2026-03-23

The primary mitigation for CVE-2025-8107 is to upgrade OceanBase Server to version 4.3.5 or later, which contains the fix. If immediate upgrade is not possible, consider restricting access to the Oracle tenant mode and carefully auditing user privileges. Implement strict input validation on any commands executed within the Oracle tenant to prevent malicious code injection. While a direct workaround is unavailable, thorough monitoring of database activity and user behavior can help detect suspicious activity. After upgrading, confirm the fix by attempting to execute the vulnerable command sequence with a low-privilege user and verifying that privilege escalation is prevented.