STIGQter STIGQter: STIG Summary: SLES 12 Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 24 Jan 2020: The SUSE operating system must generate audit records for all uses of the open command.

DISA Rule

SV-92069r3_rule

Vulnerability Number

V-77373

Group Title

SRG-OS-000037-GPOS-00015

Rule Version

SLES-12-020490

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

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

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

-a always,exit -F arch=b32 -S open -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k perm_access
-a always,exit -F arch=b64 -S open -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k perm_access

-a always,exit -F arch=b32 -S open -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k perm_access
-a always,exit -F arch=b64 -S open -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k perm_access

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 "open" 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 open /etc/audit/audit.rules

-a always,exit -F arch=b32 -S open -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k perm_access
-a always,exit -F arch=b64 -S open -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k perm_access

-a always,exit -F arch=b32 -S open -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k perm_access
-a always,exit -F arch=b64 -S open -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k perm_access

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

If the output does not produce rules containing "-F exit=-EPERM", this is a finding.

If the output does not produce rules containing "-F exit=-EACCES", this is a finding.

Vulnerability Number

V-77373

Documentable

False

Rule Version

SLES-12-020490

Severity Override Guidance

Verify the SUSE operating system generates an audit record for all uses of the "open" 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 open /etc/audit/audit.rules

-a always,exit -F arch=b32 -S open -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k perm_access
-a always,exit -F arch=b64 -S open -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k perm_access

-a always,exit -F arch=b32 -S open -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k perm_access
-a always,exit -F arch=b64 -S open -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k perm_access

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

If the output does not produce rules containing "-F exit=-EPERM", this is a finding.

If the output does not produce rules containing "-F exit=-EACCES", this is a finding.

Check Content Reference

M

Target Key

2903

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