STIGQter: STIG Summary: IBM DB2 V10.5 LUW Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 25 Oct 2019:

DB2 must generate audit records when categorized information (e.g., classification levels/security levels) is modified.

DISA Rule

SV-89307r1_rule

Vulnerability Number

V-74633

Group Title

SRG-APP-000498-DB-000346

Rule Version

DB2X-00-010600

Severity

CAT II

CCI(s)

• CCI-000172 - The information system generates audit records for the events defined in AU-2 d. with the content defined in AU-3.

Weight

10

Fix Recommendation

Run the following command to define an audit policy with the needed subset using the CREATE AUDIT POLICY SQL statement:
DB2> CREATE AUDIT POLICY <DB audit policy name>
CATEGORIES SECMAINT STATUS BOTH, CONTEXT STATUS BOTH
ERROR TYPE AUDIT

To modify an existing audit policy, replace "CREATE" with "ALTER" in the preceding statement. Only the categories explicitly named in the statement will be affected. In this case, the changes take effect immediately.

If CREATE was used above, run the following command to apply the policy created above to the database:
DB2> AUDIT DATABASE USING POLICY <DB audit policy name>

Check Contents

Review the system documentation to determine whether it is required to track categories of information, such as classification or sensitivity level. If it is not, this is not applicable (NA).

To meet these requirements at the SECMAINT, CONTEXT category auditing needs to be implemented at database level.

Run the following SQL statement to ensure that an audit policy is defined upon the database:
DB2> SELECT AUDITPOLICYNAME, AUDITPOLICYID
FROM SYSCAT.AUDITUSE
WHERE OBJECTTYPE IN (' ')

If no rows are returned, this is a finding.

Using the AUDITPOLICYID from above query find the details of audit policy:
DB2> SELECT AUDITPOLICYNAME, CONTEXTSTATUS, SECMAINTSTATUS, ERRORTYPE AS ERRORTYPE
FROM SYSCAT.AUDITPOLICIES
WHERE AUDITPOLICYID = <audit policy ID>

If the values for CONTEXTSTATUS and SECMAINTSTATUS are not 'B' (Both) or ERRORTYPE is not 'A' (Audit), this is a finding.

Vulnerability Number

V-74633

Documentable

False

Rule Version

DB2X-00-010600

Severity Override Guidance

Review the system documentation to determine whether it is required to track categories of information, such as classification or sensitivity level. If it is not, this is not applicable (NA).

To meet these requirements at the SECMAINT, CONTEXT category auditing needs to be implemented at database level.

Run the following SQL statement to ensure that an audit policy is defined upon the database:
DB2> SELECT AUDITPOLICYNAME, AUDITPOLICYID
FROM SYSCAT.AUDITUSE
WHERE OBJECTTYPE IN (' ')

If no rows are returned, this is a finding.

Using the AUDITPOLICYID from above query find the details of audit policy:
DB2> SELECT AUDITPOLICYNAME, CONTEXTSTATUS, SECMAINTSTATUS, ERRORTYPE AS ERRORTYPE
FROM SYSCAT.AUDITPOLICIES
WHERE AUDITPOLICYID = <audit policy ID>

If the values for CONTEXTSTATUS and SECMAINTSTATUS are not 'B' (Both) or ERRORTYPE is not 'A' (Audit), this is a finding.

Check Content Reference

M

Target Key

3161

Comments