Executable permissions

Executable permissions

[Karl MacMillan]

Is there a reason that the audit tools that take a file name paramater 
(-if) are not executable by non-root users? This prevents their use by 
an admin to do analysis of saved audit logs with an unprivileged user login.

Thanks - Karl

Re: Executable permissions

[Steve Grubb]

On Wednesday 13 December 2006 11:00, Karl MacMillan wrote:
> Is there a reason that the audit tools that take a file name paramater
> (-if) are not executable by non-root users?

Current tools do not.

[root src]# grep getuid *.c
auditctl.c:             if (getuid() != 0) {
auditctl.c:             if (getuid() != 0) {

Must be root to send netlink

auditd.c:       if (getuid() != 0) {

Must be root to read netlink

autrace.c:      if (getuid() != 0) {

Must be root to write to netlink.

-Steve

Re: Executable permissions

[Linda Knippers]

Steve Grubb wrote:
> On Wednesday 13 December 2006 11:00, Karl MacMillan wrote:
> 
>>Is there a reason that the audit tools that take a file name paramater
>>(-if) are not executable by non-root users?
> 
> 
> Current tools do not.
> 
> [root src]# grep getuid *.c
> auditctl.c:             if (getuid() != 0) {
> auditctl.c:             if (getuid() != 0) {
> 
> Must be root to send netlink
> 
> auditd.c:       if (getuid() != 0) {
> 
> Must be root to read netlink
> 
> autrace.c:      if (getuid() != 0) {
> 
> Must be root to write to netlink.

I think Karl is talking about the mode bits.  The audit tools
are 750, owned by root,root, on my system, so not executable
by non-root users.

-- ljk

Re: Executable permissions

[Karl MacMillan]

Steve Grubb wrote:
> On Wednesday 13 December 2006 11:00, Karl MacMillan wrote:
>> Is there a reason that the audit tools that take a file name paramater
>> (-if) are not executable by non-root users?
> 
> Current tools do not.
> 

[root@localhost ~]# ls -l /sbin/au*
-rwxr-x--- 1 root root   3080 Dec  1 11:37 /sbin/audispd*
-rwxr-x--- 1 root root  88216 Dec  1 11:37 /sbin/auditctl*
-rwxr-x--- 1 root root  96068 Dec  1 11:37 /sbin/auditd*
-rwxr-x--- 1 root root 102864 Dec  1 11:37 /sbin/aureport*
-rwxr-x--- 1 root root 115420 Dec  1 11:37 /sbin/ausearch*
-rwxr-x--- 1 root root  68816 Dec  1 11:37 /sbin/autrace*

[root@localhost ~]# rpm -qa | grep audit
audit-libs-1.3-3.fc7
audit-1.3-3.fc7
audit-libs-python-1.3-3.fc7
audit-libs-devel-1.3-3.fc7

It's not the code, but rather the default permissions on the 
executables. So this might just be a packaging problem.

Thanks - Karl

Re: Executable permissions

[Steve Grubb]

On Wednesday 13 December 2006 11:20, Karl MacMillan wrote:
> So this might just be a packaging problem.

Yeah, I think I can open it for those two programs.

-Steve