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The Canonical Ubuntu 16.04 LTS Security Technical Implementation Guide (V2 R3) has 229 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.
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New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.
Verify the file integrity tool is configured to verify extended attributes.
Check to see if Advanced Intrusion Detection Environment (AIDE) is installed with the following command:
# dpkg -l |grep aide
ii aide 0.16~a2.git20130520-3
ii aide-common 0.16~a2.git20130520-3
If AIDE is not installed, ask the System Administrator how file integrity checks are performed on the system.
If there is no application installed to perform integrity checks, this is a finding.
Note: AIDE is highly configurable at install time. These commands assume the "aide.conf" file is under the "/etc" directory.
Use the following command to determine if the file is in another location:
# find / -name aide.conf
Check the "aide.conf" file to determine if the "xattrs" rule has been added to the rule list being applied to the files and directories selection lists with the following command:
# egrep "[+]?xattrs" /etc/aide/aide.conf
VarFile = OwnerMode+n+l+X+xattrs
If the "xattrs" rule is not being used on all selection lines in the "/etc/aide.conf" file, or extended attributes are not being checked by another file integrity tool, this is a finding.
Configure the file integrity tool to check file and directory extended attributes.
If AIDE is installed, ensure the "xattrs" rule is present on all file and directory selection lists.