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.

Created attachment 573920 [details]
audit.log from the affected system

Description of problem:
AFAIU There are problems if passwd is called from a script - as in this case.

Version-Release number of selected component (if applicable):
Current in RHEL6.2

How reproducible:
$ rpm -q selinux-policy
selinux-policy-3.10.0-80.fc16.noarch

Steps to Reproduce:
1. Get RHEV-H from http://jenkins.virt.bos.redhat.com/jenkins/job/rhev-hypervisor-6/7/artifact/rhev-hypervisor6-6.3-20120307.2.auto7.el6.iso
2. Boot and install
3. Log into TUI and press F2 to get a console, log at audit.log
  
Actual results:
AVC denials

Expected results:
No AVC denials

Additional info:
<mgrepl> how is created /var/log/ovirt.log?
<fabiand> mgrepl, by redirecting output
<mgrepl> fabiand: are you also redirecting output of passwd
<mgrepl> ?
<fabiand> mgrepl, yes. It's called from a python script, which grabs stdout and stderr
<fabiand> mgrepl, I think it's those lines: http://gerrit.ovirt.org/gitweb?p=ovirt-node.git;a=blob;f=scripts/ovirtfunctions.py;h=7b6993e0b7cee1691d2def54968ba739bb8d9e41;hb=HEAD#l1073
<mgrepl> yes you are right
<fabiand> mgrepl, I can also provide the whole audit.log if you need it, btw.
<mgrepl> we allow ony appen between passwd_t and usr_tmp_t
<mgrepl> how is this script executed 
<fabiand> it's part of a management interface (TUI)

I queried the selinux policy on the wrong machine.

This is the policy used:
$ rpm -q selinux-policy
selinux-policy-3.7.19-142.el6.noarch

The problem is a tool is running as unconfined_t and if executes passwd then it ends up as passwd_t.

allow unconfined_t passwd_t : process transition ;

So if you redirect an output, you write to user_tmp_t which is created by a tool and we allow

$ sesearch -A -s passwd_t -t user_tmp_t -c file 
Found 2 semantic av rules:
   allow application_domain_type user_tmp_t : file { getattr append } ; 
   allow passwd_t user_tmp_type : file { ioctl read getattr lock open } ;

So we allow only append operation for this situation.

So what would be the solution for the tool to prevent this avc message?

Could you append the file in the /tmp?

passwd | cat > /tmp/blah

Would work around the problem.