Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 730218

Summary: selinux preventing procmail to execute hostname command
Product: Red Hat Enterprise Linux 6 Reporter: Karel Srot <ksrot>
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED ERRATA QA Contact: Milos Malik <mmalik>
Severity: low Docs Contact:
Priority: low    
Version: 6.1CC: dwalsh, mgrepl, mmalik
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: selinux-policy-3.7.19-108.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 730294 (view as bug list) Environment:
Last Closed: 2011-12-06 10:13:03 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 730294    

Description Karel Srot 2011-08-12 08:02:17 UTC 
Description of problem:

I am not sure whether this is a bug or not. The test case for bug 442028
produces following AVCs:

----
time->Thu Aug 11 10:17:34 2011
type=SYSCALL msg=audit(1313072254.344:233414): arch=80000016 syscall=11 per=400000 success=no exit=-13 a0=3fffff7c5f3 a1=8001eb60 a2=8001ec80 a3=200002514c0 items=0 ppid=11957 pid=11958 auid=4294967295 uid=502 gid=503 euid=502 suid=502 fsuid=502 egid=503 sgid=503 fsgid=503 tty=(none) ses=4294967295 comm="procmail" exe="/usr/bin/procmail" subj=system_u:system_r:procmail_t:s0 key=(null)
type=AVC msg=audit(1313072254.344:233414): avc:  denied  { execute } for  pid=11958 comm="procmail" name="hostname" dev=dm-0 ino=1177374 scontext=system_u:system_r:procmail_t:s0 tcontext=system_u:object_r:hostname_exec_t:s0 tclass=file
----
time->Thu Aug 11 10:17:34 2011
type=SYSCALL msg=audit(1313072254.344:233415): arch=80000016 syscall=106 per=400000 success=no exit=-13 a0=80103790 a1=3fffff76550 a2=3fffff76550 a3=200001d69b0 items=0 ppid=11957 pid=11958 auid=4294967295 uid=502 gid=503 euid=502 suid=502 fsuid=502 egid=503 sgid=503 fsgid=503 tty=(none) ses=4294967295 comm="sh" exe="/bin/bash" subj=system_u:system_r:procmail_t:s0 key=(null)
type=AVC msg=audit(1313072254.344:233415): avc:  denied  { getattr } for  pid=11958 comm="sh" path="/bin/hostname" dev=dm-0 ino=1177374 scontext=system_u:system_r:procmail_t:s0 tcontext=system_u:object_r:hostname_exec_t:s0 tclass=file
----
time->Thu Aug 11 10:17:36 2011
type=SYSCALL msg=audit(1313072256.164:233422): arch=80000016 syscall=11 per=400000 success=no exit=-13 a0=8001d2fa a1=8001eb60 a2=8001ec80 a3=200002514c0 items=0 ppid=11993 pid=11994 auid=4294967295 uid=501 gid=502 euid=501 suid=501 fsuid=501 egid=502 sgid=502 fsgid=502 tty=(none) ses=4294967295 comm="procmail" exe="/usr/bin/procmail" subj=system_u:system_r:procmail_t:s0 key=(null)
type=AVC msg=audit(1313072256.164:233422): avc:  denied  { execute } for  pid=11994 comm="procmail" name="hostname" dev=dm-0 ino=1177374 scontext=system_u:system_r:procmail_t:s0 tcontext=system_u:object_r:hostname_exec_t:s0 tclass=file
----
time->Thu Aug 11 10:17:36 2011
type=SYSCALL msg=audit(1313072256.164:233423): arch=80000016 syscall=5 per=400000 success=no exit=-13 a0=801036f0 a1=0 a2=3fffff95e46 a3=0 items=0 ppid=11993 pid=11994 auid=4294967295 uid=501 gid=502 euid=501 suid=501 fsuid=501 egid=502 sgid=502 fsgid=502 tty=(none) ses=4294967295 comm="sh" exe="/bin/bash" subj=system_u:system_r:procmail_t:s0 key=(null)
type=AVC msg=audit(1313072256.164:233423): avc:  denied  { read } for  pid=11994 comm="sh" name="hostname" dev=dm-0 ino=1177374 scontext=system_u:system_r:procmail_t:s0 tcontext=system_u:object_r:hostname_exec_t:s0 tclass=file

This is because of procmail recipe which instructs procmail to execute hostname command:

# cat /home/she10779/.procmailrc
PATH=$HOME/bin:/bin:/usr/bin:/usr/local/bin
MAILDIR=$HOME/mail
LOGFILE=$HOME/mail/procmail.log
HOST_NAME=`hostname`

:0:
* ^From:.*he6691@.*$
my-love

I know that this can be avoided using $HOSTNAME instead of `hostname`.
Strange thing is that this happend on s390x platform only, the test passed on other platforms.
I am not sure whether there is any risk in allowing procmail to execute hostname command.


Version-Release number of selected component (if applicable):
selinux-policy-3.7.19-93.el6_1.7

How reproducible:
always

Steps to Reproduce:
1.
2.
3.
  
Actual results:


Expected results:


Additional info:
Comment 2 Karel Srot 2011-08-12 09:22:04 UTC 
Oh, now I can see the test should load a custom module to allow it. Switching to RHEL Tests component, the test should be reviewed.
Comment 3 Daniel Walsh 2011-08-12 10:41:53 UTC 
Miroslav lets add

application_exec_all(procmail_t)
Comment 4 Karel Srot 2011-08-12 11:39:40 UTC 
OK, this is a policy bug, switching back to RHEL6

to QE: RHTS test should be updated to not to load the module.
Comment 6 Miroslav Grepl 2011-08-24 15:32:50 UTC 
Fixed in selinux-policy-3.7.19-108.el6
Comment 9 errata-xmlrpc 2011-12-06 10:13:03 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2011-1511.html