Newbie Q
Dominick Grift
domg472 at gmail.com
Fri Mar 20 21:13:15 UTC 2009
On Fri, 2009-03-20 at 20:14 +0000, Aaron Gray wrote:
> I am trying to audit2allow on F10 to allow a cgi-bin perl script to run on
> Apache. Runs fine in permissive mode not in enforcing.
>
> I bought the O'Reilly SE Linux book and learned the basics but it does not
> really seem to help me on Fedora.
>
> there was no /var/log/kernel so I tried /var/log/secure with the following
> command sequence
>
> setenforce 0
>
> # access the cgi from the web
>
> setenforce 1
>
> audit2allow -l -i /var/log/secure
>
> What is strange also is the system is not flagging things up as a
> notification icon anymore in enforcing mode.
>
> If someone could guide me or push me in the right direction I would be most
> thankful.
auditd logs to /var/log/audit/audit.log
To use cgi you must set the boolean httpd_enable_cgi.
Then either label the cgi type httpd_sys_script_exec_t or create a
custom domain for your script:
mkdir myscript; cd myscript;
echo "policy_module(myscript, 0.0.1)" > myscript.te
echo "apache_content_template(myscript)" >> myscript.te
echo "/var/www/cgi-bin/myscript.pl --
gen_context(system_u:object_r:httpd_myscript_script_exec_t, s0)" >
myscript.fc
make -f /usr/share/selinux/devel/Makefile
semodule -i myscript.pp
restorecon -R -v /var/www/cgi-bin/myscript.pl
This is just a base module you will likely need to extend it. you can do
so why making the httpd_myscript_script_t permissive and then extend
your source policy with any rules required frpm audit.log/audit2why
semanage permissive -a httpd_myscript_script_t
ausearch -m avc -ts today | grep httpd_myscript_script_t | audit2allow
-R >> myscript.te; make -f /usr/share/selinux/devel/Makefile; semodule
-i myscript.pp
semanage permissive -d httpd_myscript_script_t
(to remove the permissive domain)
hth , Dominick
> Aaron
>
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