TMA-DB2-ZOS-2.2.1
Ensure that access to the catalog tables in the communications database (CDB) is restricted
설명
The communications database (CDB) is a set of Db2 catalog tables that can be configured to control aspects of outbound and inbound connection requests. The SYSIBM.LOCATIONS table and SYSIBM.USERNAMES table are configured for using TCP/IP or SNA protocol. PUBLIC access to these tables exposes connection information for remote Db2 access, which can compromise the security of the server.
점검 방법
감사 방식: 수동 검토
이 권장 사항은 자동으로 점검할 수 없습니다. --include-manual 옵션을 전달하면 스캔 결과에 이 지침과 함께 표시됩니다.
For Db2 internal security users: Issue the following SQL statement to check if PUBLIC has access: SELECT GRANTEE, TCREATOR, TTNAME FROM SYSIBM.SYSTABAUTH WHERE TCREATOR = 'SYSIBM' AND TTNAME IN ('LOCATIONS', 'IPNAMES', 'IPLIST', 'LUNAMES', 'LULIST', 'LUMODES', 'MODESELECT', 'USERNAMES') AND GRANTEE = 'PUBLIC'; Output that contains zero rows is considered a successful finding. Otherwise, PUBLIC has SELECT, INSERT, UPDATE, or DELETE privilege and the remediation steps should be followed. For external security users: Issue the RACF RLIST command to list the ... (full steps: CIS section 2.2.1)
조치 방법
조치 방식: 가이드 또는 인프라 패치
For Db2 internal security users: Issue the SQL REVOKE statement to revoke access from PUBLIC. For external security users: Issue the RACF RALTER command to update the profiles and change the UACC setting to NONE. Issue the RACF PERMIT command to remove the ID(*) and specify users or groups.
속성
- 운영 체제
- 모두
- 태그
- db2-zospermissions
- 참고 자료
- CIS IBM Db2 13 for z/OS Benchmark v1.0.0 - 2.2.1 Ensure that access to the catalog tables in the communications database (CDB) is restricted