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Bug 639230 - SELinux is preventing /usr/lib/vte/gnome-pty-helper "open" access on wtmp
Summary: SELinux is preventing /usr/lib/vte/gnome-pty-helper "open" access on wtmp
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: selinux-policy
Version: 6.0
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Miroslav Grepl
QA Contact: Milos Malik
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-10-01 07:48 UTC by Milos Malik
Modified: 2012-10-16 12:19 UTC (History)
1 user (show)

Fixed In Version: selinux-policy-3.7.19-56.el6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-05-19 11:56:42 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2011:0526 0 normal SHIPPED_LIVE selinux-policy bug fix and enhancement update 2011-05-19 09:37:41 UTC

Description Milos Malik 2010-10-01 07:48:33 UTC 
Detailed Description:

[SELinux is in permissive mode. This access was not denied.]

SELinux denied access requested by gnome-pty-helpe. It is not expected that this
access is required by gnome-pty-helpe and this access may signal an intrusion
attempt. It is also possible that the specific version or configuration of the
application is causing it to require additional access.

Allowing Access:

You can generate a local policy module to allow this access - see FAQ
(http://docs.fedoraproject.org/selinux-faq-fc5/#id2961385) Please file a bug
report.

Additional Information:

Source Context                xguest_u:xguest_r:xguest_t:s0
Target Context                system_u:object_r:wtmp_t:s0
Target Objects                wtmp [ file ]
Source                        gnome-pty-helpe
Source Path                   /usr/lib/vte/gnome-pty-helper
Port                          <Unknown>
Host                          localhost.localdomain
Source RPM Packages           vte-0.25.1-5.el6
Target RPM Packages           
Policy RPM                    selinux-policy-3.7.19-55.el6
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Plugin Name                   catchall
Host Name                     localhost.localdomain
Platform                      Linux localhost.localdomain 2.6.32-71.el6.i686 #1
                              SMP Wed Sep 1 01:26:34 EDT 2010 i686 i686
Alert Count                   2
First Seen                    Thu Sep 30 16:13:56 2010
Last Seen                     Fri Oct  1 09:21:52 2010
Local ID                      3ebd0eb5-7ea4-49b3-95fa-6a643267e332
Line Numbers                  

Raw Audit Messages            

node=localhost.localdomain type=AVC msg=audit(1285917712.378:141): avc:  denied  { open } for  pid=3503 comm="gnome-pty-helpe" name="wtmp" dev=dm-0 ino=10815 scontext=xguest_u:xguest_r:xguest_t:s0 tcontext=system_u:object_r:wtmp_t:s0 tclass=file

node=localhost.localdomain type=SYSCALL msg=audit(1285917712.378:141): arch=40000003 syscall=5 success=yes exit=5 a0=8049f3e a1=8001 a2=0 a3=8049f3e items=0 ppid=3502 pid=3503 auid=505 uid=505 gid=505 euid=505 suid=505 fsuid=505 egid=22 sgid=22 fsgid=22 tty=(none) ses=9 comm="gnome-pty-helpe" exe="/usr/lib/vte/gnome-pty-helper" subj=xguest_u:xguest_r:xguest_t:s0 key=(null)
Comment 1 Milos Malik 2010-10-01 07:50:02 UTC 
This time it is "lock" instead of "open".

Detailed Description:

[SELinux is in permissive mode. This access was not denied.]

SELinux denied access requested by gnome-pty-helpe. It is not expected that this
access is required by gnome-pty-helpe and this access may signal an intrusion
attempt. It is also possible that the specific version or configuration of the
application is causing it to require additional access.

Allowing Access:

You can generate a local policy module to allow this access - see FAQ
(http://docs.fedoraproject.org/selinux-faq-fc5/#id2961385) Please file a bug
report.

Additional Information:

Source Context                xguest_u:xguest_r:xguest_t:s0
Target Context                system_u:object_r:wtmp_t:s0
Target Objects                /var/log/wtmp [ file ]
Source                        gnome-pty-helpe
Source Path                   /usr/lib/vte/gnome-pty-helper
Port                          <Unknown>
Host                          localhost.localdomain
Source RPM Packages           vte-0.25.1-5.el6
Target RPM Packages           initscripts-9.03.17-1.el6
Policy RPM                    selinux-policy-3.7.19-55.el6
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Plugin Name                   catchall
Host Name                     localhost.localdomain
Platform                      Linux localhost.localdomain 2.6.32-71.el6.i686 #1
                              SMP Wed Sep 1 01:26:34 EDT 2010 i686 i686
Alert Count                   2
First Seen                    Thu Sep 30 16:13:56 2010
Last Seen                     Fri Oct  1 09:21:52 2010
Local ID                      167e198f-6c2e-469c-8034-71b50328d9e1
Line Numbers                  

Raw Audit Messages            

node=localhost.localdomain type=AVC msg=audit(1285917712.382:142): avc:  denied  { lock } for  pid=3503 comm="gnome-pty-helpe" path="/var/log/wtmp" dev=dm-0 ino=10815 scontext=xguest_u:xguest_r:xguest_t:s0 tcontext=system_u:object_r:wtmp_t:s0 tclass=file

node=localhost.localdomain type=SYSCALL msg=audit(1285917712.382:142): arch=40000003 syscall=221 success=yes exit=0 a0=5 a1=7 a2=bffa763c a3=bffa75b0 items=0 ppid=3502 pid=3503 auid=505 uid=505 gid=505 euid=505 suid=505 fsuid=505 egid=22 sgid=22 fsgid=22 tty=(none) ses=9 comm="gnome-pty-helpe" exe="/usr/lib/vte/gnome-pty-helper" subj=xguest_u:xguest_r:xguest_t:s0 key=(null)
Comment 3 Daniel Walsh 2010-10-01 14:32:47 UTC 
Does this happen when you login in enforcing mode?

Miroslav lets add

	auth_dontaudit_read_login_records($1_usertype)

to
userdom_restricted_xwindows_user_template
Comment 4 Miroslav Grepl 2010-10-06 08:38:47 UTC 
Fixed in selinux-policy-3.7.19-56.el6.noarch
Comment 10 errata-xmlrpc 2011-05-19 11:56:42 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
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