Re: Trying to use mailx for logwatch

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getting closer.  I am running a new install.  So a fresh start on this...

On 01/06/2014 11:14 AM, Daniel J Walsh wrote:
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On 01/03/2014 12:25 PM, Robert Moskowitz wrote:
On 01/03/2014 12:03 PM, Daniel J Walsh wrote:
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On 01/03/2014 11:34 AM, Robert Moskowitz wrote:
On 01/03/2014 11:21 AM, Daniel J Walsh wrote:
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On 01/02/2014 05:29 PM, Robert Moskowitz wrote:
And the mail is failing.  Here is what I have done:

I determined that in:
/usr/share/logwatch/default.conf/logwatch.conf mailer =
"/usr/sbin/sendmail -t"

so in: /etc/logwatch/conf/logwatch.conf mailer = "/usr/bin/mailx
-t"

In /etc/aliases I have:

# Person who should get root's mail root:        rgm

and I ran newaliases

'journalctl |grep -i logwatch' shows the following (along with
other lines):

Jan 02 03:32:01 lx120e.htt-consult.com run-parts[16112]:
(/etc/cron.daily) starting 0logwatch Jan 02 03:32:12
lx120e.htt-consult.com run-parts[16429]: (/etc/cron.daily)
finished 0logwatch Jan 02 03:32:16 lx120e.htt-consult.com
setroubleshoot[16427]: dbus avc(node=lx120e.htt-consult.com
type=AVC msg=audit(1388651532.024:734): avc: denied  { write } for
pid=16425 comm="mailx" name="root" dev="dm-0" ino=1308161
scontext=system_u:system_r:logwatch_mail_t:s0-s0:c0.c1023
tcontext=system_u:object_r:admin_home_t:s0 tclass=dir
node=lx120e.htt-consult.com type=SYSCALL
msg=audit(1388651532.024:734): arch=40000003 syscall=5 success=no
exit=-13 a0=9b15128 a1=8441 a2=1b6 a3=809134c items=0 ppid=1
pid=16425 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0
fsgid=0 ses=15 tty=(none) comm="mailx" exe="/usr/bin/mailx"
subj=system_u:system_r:logwatch_mail_t:s0-s0:c0.c1023 key=(null)
Jan 02 03:32:16 lx120e.htt-consult.com setroubleshoot[16427]:
AuditRecordReceiver.add_record_to_cache():
node=lx120e.htt-consult.com type=AVC msg=audit(1388651532.24:734):
avc:  denied  { write } for pid=16425 comm="mailx" name="root"
dev="dm-0" ino=1308161
scontext=system_u:system_r:logwatch_mail_t:s0-s0:c0.c1023
tcontext=system_u:object_r:admin_home_t:s0 tclass=dir Jan 02
03:32:16 lx120e.htt-consult.com setroubleshoot[16427]:
AuditRecordReceiver.add_record_to_cache():
node=lx120e.htt-consult.com type=SYSCALL
msg=audit(1388651532.24:734): arch=40000003 syscall=5 success=no
exit=-13 a0=9b15128 a1=8441 a2=1b6 a3=809134c items=0 ppid=1
pid=16425 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0
fsgid=0 ses=15 tty=(none) comm="mailx" exe="/usr/bin/mailx"
subj=system_u:system_r:logwatch_mail_t:s0-s0:c0.c1023 key=(null)
Jan 02 03:32:16 lx120e.htt-consult.com setroubleshoot[16427]:
analyze_avc()
avc=scontext=system_u:system_r:logwatch_mail_t:s0-s0:c0.c1023
tcontext=system_u:object_r:admin_home_t:s0 access=['write']
tclass=dir tpath=/root

oh, here are the mail files:

# ls -ls /var/spool/mail/ total 8 0 -rw-rw----. 1 rgm  mail    0
Jan 2 16:47 rgm 8 -rw-------. 1 root mail 5886 Dec 31 12:27 root 0
-rw-rw----. 1 rpc  mail    0 Dec 25 13:27 rpc

The content in root mail is from when I had postfix installed.  I
have since deleted it to work on getting mailx to work instead.

=================================


perhaps /var/spool/mail/root needs 660 permissions?


Do you know what mailx is trying to write into the /root directory?
The output of logwatch.  I edited /etc/logwatch/conf/logwatch.conf

with the line:

mailer = "/usr/bin/mailx -t"

To override /usr/share/logwatch/default.conf/logwatch.conf

mailer = "/usr/sbin/sendmail -t"


Ok I just added a patch to git to allow logwatch_mail_t to write to the
/root directory certain files.

sesearch -T -s logwatch_mail_t | grep mail_home_rw_t type_transition
logwatch_mail_t admin_home_t : dir mail_home_rw_t ".maildir";
type_transition logwatch_mail_t user_home_dir_t : dir mail_home_rw_t
".maildir"; type_transition logwatch_mail_t admin_home_t : file
mail_home_rw_t ".esmtp_queue"; type_transition logwatch_mail_t
admin_home_t : dir mail_home_rw_t "Maildir"; type_transition
logwatch_mail_t user_home_dir_t : file mail_home_rw_t ".esmtp_queue";
type_transition logwatch_mail_t user_home_dir_t : dir mail_home_rw_t
"Maildir";

You could do something similar by adding:

policy_module(mylogwatch, 1.0) gen_require(` type logwatch_mail_t; ')

mta_filetrans_admin_home_content(logwatch_mail_t)
Dan, you are way beyond me here.  I need pretty clear cookbooks. Changing a
line in a .conf is one thing, what are you telling me to do here?  Just cut
and paste from policy... to mta... into a rooted terminal session?



Create a file mylogwatch.te with the following content.

policy_module(mylogwatch, 1.0)
gen_require(`
     type logwatch_mail_t;
')

mta_filetrans_admin_home_content(logwatch_mail_t)

Now execute this command to compile the policy and load it into the kernel

# make -f /usr/share/selinux/devel/Makefile

# make -f /usr/share/selinux/devel/Makefile
make: /usr/share/selinux/devel/Makefile: No such file or directory
make: *** No rule to make target `/usr/share/selinux/devel/Makefile'.  Stop.

So what do I need to install. This is the base Gnome x86_64 with only Admin tools added. Oh and svn and git, as I need them for joint Internet Draft writing...
# semodule -i mylogwatch.pp

Now you should be allowed to run logwatch_mail_t in enforcing mode.


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