V-275733

Discussion

In certain situations, software applications/programs need to execute with elevated privileges to perform required functions. However, if the privileges required for execution are at a higher level than the privileges assigned to organizational users invoking such applications/programs, those users are indirectly provided with greater privileges than assigned by the organizations. Some programs and processes are required to operate at a higher privilege level and therefore, must be excluded from the organization-defined software list after review. Satisfies: SRG-OS-000326-GPOS-00126, SRG-OS-000327-GPOS-00127, SRG-OS-000755-GPOS-00220

Check Content

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.