V-279545

Discussion

Misusing 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-000326-GPOS-00126

Check Content

Verify Nutanix OS is configured to audit the misuse of privileged commands using the following command.

$ sudo grep -iw execve /etc/audit/audit.rules
-a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -k setuid
-a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -k setuid
-a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -k setgid
-a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -k setgid
-a always,exit -F arch=b64 -S execve -F auid>2000 -F auid!=4294967295 -k audit_execve
-a always,exit -F arch=b32 -S execve -F auid>2000 -F auid!=4294967295 -k audit_execve

If both the "b32" and "b64" audit rules for "UID" and "GID" files are not defined, this is a finding.