Detections
Analytics

1.135 OL09-00-000715

Information

OL 9 must audit uses of the execve system call.

GROUP ID: V-271570
RULE ID: SV-271570r1092558

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-000326-GPOS-00126, SRG-OS-000327-GPOS-00127, SRG-OS-000755-GPOS-00220

Solution

Configure OL 9 to audit the execution of the execve system call.

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

-a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -k execpriv
-a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -k execpriv
-a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -k execpriv
-a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -k execpriv

The audit daemon must be restarted for the changes to take effect.

Restart auditd:

$ sudo service auditd restart

Note: Users must reboot to view above results with command "auditctl -l | grep execve".

See Also

https://workbench.cisecurity.org/benchmarks/27024

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-6(8), 800-53|AC-6(9), CCI|CCI-002233, CCI|CCI-002234, CCI|CCI-004188, Rule-ID|SV-271570r1092558_rule, STIG-ID|OL09-00-000715, Vuln-ID|V-271570

Plugin: Unix

Control ID: e534845b0e0b15172ba9d17fd9a2889355f5fae07e30a96f75e785f6d8e5b8c8