linux auditd: Not getting log for chmod syscall

Marcelo Cerri mhcerri at linux.vnet.ibm.com
Wed Jan 18 12:10:39 UTC 2012


Just remove the quotes. It's only necessary when running auditctl 
directly from bash.

Regards,
Marcelo

On 01/18/2012 09:10 AM, bharat gupta wrote:
> when i am using auid>=500 in quote like u have told  -a always,exit -F 
> arch=b64  -S chmod -S fchmod -S fchmodat -F
> 'auid>=500' -F auid!=4294967295 -k perm_mod
>
> it is giving error :
> #service auditd restart
> Stopping auditd:                                           [  OK  ]
> Starting auditd:                                           [  OK  ]
> -F unknown field: "auid
> There was an error in line 102 of /etc/audit/audit.rules
>
>
>
> On Sat, Jan 14, 2012 at 1:34 AM, Steve Grubb <sgrubb at redhat.com 
> <mailto:sgrubb at redhat.com>> wrote:
>
>     On Thursday, January 12, 2012 11:52:29 PM bharat gupta wrote:
>     > I am using redhat 6, and trying to create logs for some system
>     call using
>     > the rule given below:
>     >
>     > *-a always,exit -F arch=b64  -S chmod -S fchmod -S fchmodat -F
>     auid>=500
>     >  -F auid!=4294967295 -k perm_mod*
>
>     The rule works for me.
>
>     # auditctl -a always,exit -F arch=b64  -S chmod -S fchmod -S
>     fchmodat -F
>     'auid>=500' -F auid!=4294967295 -k perm_mod
>
>     I don't have any asterisk and I have single quote marks since bash
>     will
>     interpret the > as a redirection. But then doing a chmod command,
>     it does pick
>     up the fchmodat() syscall.
>
>
>     > After running command chmod i was not able to get any log, but
>     when i used
>     > strace command i have seen that syscall have been called.
>     > I also checked that auditd service is running properly.
>
>     When you use auditctl -l, is the rule just like you expected?
>
>     LIST_RULES: exit,always arch=3221225534 (0xc000003e) auid>=500
>     (0x1f4) auid!=-1
>     (0xffffffff) key=perm_mod syscall=chmod,fchmod,fchmodat
>
>     It should just work unless you are on a distribution that does not
>     really
>     support auditing.
>
>     -Steve
>
>
>
>
> -- 
> Bharat Gupta
> IIT -Roorkee
>
>
>
> --
> Linux-audit mailing list
> Linux-audit at redhat.com
> https://www.redhat.com/mailman/listinfo/linux-audit




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