Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.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 692457

Summary: MLS: under root ssh cannot create .ssh and underlying files
Product: Red Hat Enterprise Linux 6 Reporter: Miroslav Vadkerti <mvadkert>
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED ERRATA QA Contact: Miroslav Vadkerti <mvadkert>
Severity: high Docs Contact:
Priority: high    
Version: 6.1CC: dwalsh, ebenes, mgrepl
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: selinux-policy-3.7.19-81.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-05-19 12:27:18 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: 584498, 682670, 846801, 846802    

Description Miroslav Vadkerti 2011-03-31 12:03:55 UTC
Description of problem:
# id
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel) context=staff_u:sysadm_r:sysadm_t:SystemLow-SystemHigh
# rm -rf ~/.ssh
# ssh eal@localhost
Could not create directory '/root/.ssh'.
== snip ==

When enabling no audit rules I see:
type=AVC msg=audit(1301572338.311:253335): avc:  denied  { rlimitinh } for  pid=12601 comm="ssh" scontext=staff_u:sysadm_r:sysadm_t:s0-s15:c0.c1023 tcontext=staff_u:sysadm_r:ssh_t:s0-s15:c0.c1023 tclass=process
type=AVC msg=audit(1301572338.311:253335): avc:  denied  { siginh } for  pid=12601 comm="ssh" scontext=staff_u:sysadm_r:sysadm_t:s0-s15:c0.c1023 tcontext=staff_u:sysadm_r:ssh_t:s0-s15:c0.c1023 tclass=process
type=AVC msg=audit(1301572338.311:253335): avc:  denied  { noatsecure } for  pid=12601 comm="ssh" scontext=staff_u:sysadm_r:sysadm_t:s0-s15:c0.c1023 tcontext=staff_u:sysadm_r:ssh_t:s0-s15:c0.c1023 tclass=process
type=AVC msg=audit(1301572338.327:253336): avc:  denied  { search } for  pid=12601 comm="ssh" name="root" dev=dm-0 ino=15 scontext=staff_u:sysadm_r:ssh_t:s0-s15:c0.c1023 tcontext=system_u:object_r:admin_home_t:s0 tclass=dir


Version-Release number of selected component (if applicable):
selinux-policy-mls-3.7.19-79.el6.noarch

How reproducible:
100%

Steps to Reproduce:
see description
  
Actual results:
Cannot create .ssh and access underlying files

Expected results:
Can create .ssh and access underlying files

Comment 1 Daniel Walsh 2011-03-31 12:21:31 UTC
Does ssh actually attempt to create the /root/.ssh directory, Or is this a bogus error message.

Miroslav lets add

userdom_search_admin_dir(ssh_t)

Comment 2 Miroslav Vadkerti 2011-03-31 12:26:57 UTC
No it is not a bogus message. When .ssh directory does not exist it tries to create it as it will be creating known_hosts later on.

I will try

Comment 3 Daniel Walsh 2011-03-31 12:45:09 UTC
Miroslav then we need

userdom_search_admin_dir(sshd_t)
userdom_admin_dir_filetrans(ssh_t, ssh_home_t, { dir sock_file })

Comment 4 Miroslav Vadkerti 2011-03-31 14:53:31 UTC
Seems to be workign fine with this custom module:

# cat mypol.te 
policy_module(mypol,1.0);

require {
    type sshd_t;
    type ssh_t;
    type ssh_home_t;
}

userdom_search_admin_dir(sshd_t)
userdom_admin_home_dir_filetrans(ssh_t, ssh_home_t, { dir sock_file })

Comment 5 Miroslav Grepl 2011-04-05 19:11:31 UTC
Fixed in selinux-policy-3.7.19-81.el6

Comment 7 Miroslav Vadkerti 2011-04-07 11:31:04 UTC
This issue is fixed in selinux-policy-mls-3.7.19-81.el6. I could not reproduce the problem anymore on our test machine

Comment 9 errata-xmlrpc 2011-05-19 12:27:18 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2011-0526.html