STIGQter: STIG Summary: Riverbed NetIM OS Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 11 Sep 2025:

Ubuntu OS must prevent all software from executing at higher privilege levels than users executing the software, and the audit system must be configured to audit the execution of privileged functions.

DISA Rule

SV-275733r1148249_rule

Vulnerability Number

V-275733

Group Title

SRG-OS-000326-GPOS-00126

Rule Version

RIIM-OS-654230

Severity

CAT II

CCI(s)

• CCI-002233 - Prevent the organization-defined software from executing at higher privilege levels than users executing the software.
• CCI-002234 - Log the execution of privileged functions.
• CCI-004188 - Monitor the use of maintenance tools that execute with increased privilege.

Weight

10

Fix Recommendation

Configure Ubuntu OS to audit the execution of all privileged functions.

Add or modify the following lines in the "/etc/audit/rules.d/stig.rules" file:

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

To reload the rules file, issue the following command:

$ sudo augenrules --load

Note: The "-k <keyname>" at the end of the line gives the rule a unique meaning to help during an audit investigation. The <keyname> does not need to match the example above.

Check Contents

Verify Ubuntu OS audits the execution of privilege functions by auditing the "execve" system call by using the following command:

$ sudo auditctl -l | grep execve
-a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -F key=execpriv
-a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -F key=execpriv
-a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -F key=execpriv
-a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -F key=execpriv

If the command does not return lines that match the example or the lines are commented out, this is a finding.

Note: The "key=" value is arbitrary and can be different from the example output above.

Vulnerability Number

V-275733

Documentable

False

Rule Version

RIIM-OS-654230

Severity Override Guidance

Verify Ubuntu OS audits the execution of privilege functions by auditing the "execve" system call by using the following command:

$ sudo auditctl -l | grep execve
-a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -F key=execpriv
-a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -F key=execpriv
-a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -F key=execpriv
-a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -F key=execpriv

If the command does not return lines that match the example or the lines are commented out, this is a finding.

Note: The "key=" value is arbitrary and can be different from the example output above.

Check Content Reference

M

Target Key

5706