STIGQter: STIG Summary: SLES 12 Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

The SUSE operating system must generate audit records for all uses of the fchmodat command.

DISA Rule

SV-217229r603262_rule

Vulnerability Number

V-217229

Group Title

SRG-OS-000037-GPOS-00015

Rule Version

SLES-12-020480

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.
• CCI-000169 - The information system provides audit record generation capability for the auditable events defined in AU-2 a. at organization-defined information system components.
• CCI-000130 - The information system generates audit records containing information that establishes what type of event occurred.
• CCI-002884 - The organization audits nonlocal maintenance and diagnostic sessions^ organization-defined audit events.

Weight

10

Fix Recommendation

Configure the SUSE operating system to generate an audit record for all uses of the "fchmodat" command.

Add or update the following rules to "/etc/audit/rules.d/audit.rules":

-a always,exit -F arch=b32 -S fchmodat -F auid>=1000 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S fchmodat -F auid>=1000 -F auid!=4294967295 -k perm_mod

The audit daemon must be restarted for the changes to take effect.

# sudo systemctl restart auditd.service

Check Contents

Verify the SUSE operating system generates an audit record for all uses of the "fchmodat" command.

Check that the following command call is being audited by performing the following command to check the file system rules in "/etc/audit/audit.rules":

# sudo grep -i fchmodat /etc/audit/audit.rules

-a always,exit -F arch=b32 -S fchmodat -F auid>=1000 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S fchmodat -F auid>=1000 -F auid!=4294967295 -k perm_mod

If both the "b32" and "b64" audit rules are not defined for the "fchmodat" syscall, this is a finding.

Vulnerability Number

V-217229

Documentable

False

Rule Version

SLES-12-020480

Severity Override Guidance

Verify the SUSE operating system generates an audit record for all uses of the "fchmodat" command.

Check that the following command call is being audited by performing the following command to check the file system rules in "/etc/audit/audit.rules":

# sudo grep -i fchmodat /etc/audit/audit.rules

-a always,exit -F arch=b32 -S fchmodat -F auid>=1000 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S fchmodat -F auid>=1000 -F auid!=4294967295 -k perm_mod

If both the "b32" and "b64" audit rules are not defined for the "fchmodat" syscall, this is a finding.

Check Content Reference

M

Target Key

4033

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