07-24-2014
Permit me to be quite extremely blunt. Your auditor is an idiot. He has heard that "SUID is bad" and parroted it, but has no real understanding of it. Following his advice will ruin your machine.
su couldn't possibly work if it weren't SUID. It needs to access the shadow files, which are locked to root!
Now, if there are things which are set SUID but shouldn't be, that would be bad. Having cp set SUID would be a recipe for disaster for example.
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AUTRACE:(8) System Administration Utilities AUTRACE:(8)
NAME
autrace - a program similar to strace
SYNOPSIS
autrace program [-r] [program-args]...
DESCRIPTION
autrace is a program that will add the audit rules to trace a process similar to strace. It will then execute the program passing arguments
to it. The resulting audit information will be in the audit logs if the audit daemon is running or syslog. This command deletes all audit
rules prior to executing the target program and after executing it. As a safety precaution, it will not run unless all rules are deleted
with auditctl prior to use.
OPTIONS
-r Limit syscalls collected to ones needed for analyzing resource usage. This could help people doing threat modeling. This saves space
in logs.
EXAMPLES
The following illustrates a typical session:
autrace /bin/ls /tmp
ausearch --start recent -p 2442 -i
and for resource usage mode:
autrace -r /bin/ls
ausearch --start recent -p 2450 --raw | aureport --file --summary
ausearch --start recent -p 2450 --raw | aureport --host --summary
SEE ALSO
ausearch(8), auditctl(8).
AUTHOR
Steve Grubb
Red Hat Jan 2007 AUTRACE:(8)