STIGQter STIGQter: STIG Summary: Canonical Ubuntu 16.04 Security Technical Implementation Guide Version: 1 Release: 3 Benchmark Date: 24 Jan 2020: Successful/unsuccessful uses of the fchmod command must generate an audit record.

DISA Rule

SV-90419r3_rule

Vulnerability Number

V-75739

Group Title

SRG-OS-000037-GPOS-00015

Rule Version

UBTU-16-020570

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Configure the audit system to generate an audit event for any successful/unsuccessful use of the "fchmod" command by adding the following line to "/etc/audit/audit.rules":

-a always,exit -F arch=b64 -S fchmod -F auid>=1000 -F auid!=4294967295 -k perm_chng

The audit daemon must be restarted for the changes to take effect. To restart the audit daemon, run the following command:

# sudo systemctl restart auditd.service

Check Contents

Verify the Ubuntu operating system generates an audit record when successful/unsuccessful attempts to use the "fchmod" command occur.

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

# sudo grep -w fchmod /etc/audit/audit.rules

-a always,exit -F arch=b64 -S fchmod -F auid>=1000 -F auid!=4294967295 -k perm_chng

If the command does not return a line, or the line is commented out, this is a finding.

Vulnerability Number

V-75739

Documentable

False

Rule Version

UBTU-16-020570

Severity Override Guidance

Verify the Ubuntu operating system generates an audit record when successful/unsuccessful attempts to use the "fchmod" command occur.

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

# sudo grep -w fchmod /etc/audit/audit.rules

-a always,exit -F arch=b64 -S fchmod -F auid>=1000 -F auid!=4294967295 -k perm_chng

If the command does not return a line, or the line is commented out, this is a finding.

Check Content Reference

M

Target Key

3075

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