Information
Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious and ongoing concern and can have significant adverse impacts on organizations. Auditing the use of privileged functions is one way to detect such misuse and identify the risk from insider threats and the advanced persistent threat.
Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000471-GPOS-00215
Solution
At the command line, run the following command to obtain a list of setuid files:
# find / -xdev -perm -4000 -type f -o -perm -2000 -type f | sort
Execute the following for each setuid file found in the first command that does not have a corresponding line in the audit rules:
Navigate to and open:
/etc/audit/rules.d/audit.STIG.rules
Add the following line:
-a always,exit -F path=<setuid_path> -F perm=x -F auid>=1000 -F auid!=4294967295 -F key=privileged
Execute the following command to load the new audit rules:
# /sbin/augenrules --load
Note: A new 'audit.STIG.rules' file is provided for placement in '/etc/audit/rules.d' that contains all rules needed for auditd.
Note: An older 'audit.STIG.rules' may exist if the file exists and references older 'GEN' SRG IDs. This file can be removed and replaced as necessary with an updated one.