STIGQter: STIG Summary: Oracle Linux 5 Security Technical Implementation Guide Version: 1 Release: 13 Benchmark Date: 26 Oct 2018: The audit system must be configured to audit all discretionary access control permission modifications.

DISA Rule

SV-64605r1_rule

Vulnerability Number

V-29253

Group Title

GEN002820-5

Rule Version

GEN002820-5

Severity

CAT II

CCI(s)

• CCI-000126 - The organization determines that the organization-defined subset of the auditable events defined in AU-2 are to be audited within the information system.

Weight

10

Fix Recommendation

The "-F arch=<ARCH>" restriction is required on dual-architecture systems (such as x86_64). On dual-architecture systems, two separate rules must exist - one for each architecture supported. Use the generic architectures "b32" and "b64" for specifying these rules.
On single architecture systems, the "-F arch=<ARCH>" restriction may be omitted, but if present must match either the architecture of the system or its corresponding generic architecture. The architecture of the system may be determined by running "uname -m". See the auditctl(8) manpage for additional details.
Any restrictions (such as with "-F") beyond those provided in the example rules are not in strict compliance with this requirement, and are a finding unless justified and documented appropriately.
The use of audit keys consistent with the provided example is encouraged to provide for uniform audit logs, however omitting the audit key or using an alternate audit key is not a finding.

Procedure:
Edit the audit.rules file and add the following lines to enable auditing of discretionary access control permissions modifications.
-a exit,always -F arch=<ARCH> -S fchown

Additionally, the following rule is required in systems supporting the 32-bit syscall table (such as i686 and x86_64):
-a exit,always -F arch=<ARCH> -S fchown32

Restart the auditd service.
# service auditd restart

Check Contents

Check the system's audit configuration.

Procedure:
# cat /etc/audit/audit.rules | grep -e "-a exit,always" | grep -i "fchown"
If "-S fchown" is not in the result, this is a finding.

Additionally, the following rule is required in systems supporting the 32-bit syscall table (such as i686 and x86_64):

# cat /etc/audit/audit.rules | grep -e "-a exit,always" | grep -i "fchown32"

If "-S fchown32" is not in the result, this is a finding.

Vulnerability Number

V-29253

Documentable

False

Rule Version

GEN002820-5

Severity Override Guidance

Check the system's audit configuration.

Procedure:
# cat /etc/audit/audit.rules | grep -e "-a exit,always" | grep -i "fchown"
If "-S fchown" is not in the result, this is a finding.

Additionally, the following rule is required in systems supporting the 32-bit syscall table (such as i686 and x86_64):

# cat /etc/audit/audit.rules | grep -e "-a exit,always" | grep -i "fchown32"

If "-S fchown32" is not in the result, this is a finding.

Check Content Reference

M

Responsibility

System Administrator

Target Key

2207

Comments