Bug 824098 - SELinux is preventing /usr/bin/lpstat.cups from 'write' accesses on the sock_file pkcs11.
SELinux is preventing /usr/bin/lpstat.cups from 'write' accesses on the sock_...
Product: Fedora
Classification: Fedora
Component: selinux-policy (Show other bugs)
i686 Unspecified
unspecified Severity unspecified
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Assigned To: Miroslav Grepl
Fedora Extras Quality Assurance
Depends On:
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Reported: 2012-05-22 13:35 EDT by Mikhail
Modified: 2012-06-16 20:00 EDT (History)
5 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2012-06-16 20:00:52 EDT
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Regression: ---
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RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Mikhail 2012-05-22 13:35:48 EDT
libreport version: 2.0.10
executable:     /usr/bin/python2.7
hashmarkername: setroubleshoot
kernel:         3.3.6-3.fc17.i686.PAE
time:           Вт. 22 мая 2012 23:35:35

:SELinux is preventing /usr/bin/lpstat.cups from 'write' accesses on the sock_file pkcs11.
:*****  Plugin catchall (100. confidence) suggests  ***************************
:If you believe that lpstat.cups should be allowed write access on the pkcs11 sock_file by default.
:Then you should report this as a bug.
:You can generate a local policy module to allow this access.
:allow this access for now by executing:
:# grep lpstat /var/log/audit/audit.log | audit2allow -M mypol
:# semodule -i mypol.pp
:Additional Information:
:Source Context                unconfined_u:unconfined_r:lpr_t:s0-s0:c0.c1023
:Target Context                unconfined_u:object_r:user_tmp_t:s0
:Target Objects                pkcs11 [ sock_file ]
:Source                        lpstat
:Source Path                   /usr/bin/lpstat.cups
:Port                          <Unknown>
:Host                          (removed)
:Source RPM Packages           cups-1.5.3-1.fc17.i686
:Target RPM Packages           
:Policy RPM                    selinux-policy-3.10.0-125.fc17.noarch
:Selinux Enabled               True
:Policy Type                   targeted
:Enforcing Mode                Enforcing
:Host Name                     (removed)
:Platform                      Linux (removed) 3.3.6-3.fc17.i686.PAE #1 SMP Wed May 16
:                              22:01:11 UTC 2012 i686 i686
:Alert Count                   4
:First Seen                    Вт. 22 мая 2012 23:33:53
:Last Seen                     Вт. 22 мая 2012 23:34:08
:Local ID                      351872fd-4f0f-47dd-b790-e52709ffca35
:Raw Audit Messages
:type=AVC msg=audit(1337708048.954:90): avc:  denied  { write } for  pid=8585 comm="lpstat" name="pkcs11" dev="tmpfs" ino=19871 scontext=unconfined_u:unconfined_r:lpr_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_tmp_t:s0 tclass=sock_file
:type=SYSCALL msg=audit(1337708048.954:90): arch=i386 syscall=socketcall success=no exit=EACCES a0=3 a1=bfb9ed80 a2=b7728ff4 a3=b7f57e88 items=0 ppid=8584 pid=8585 auid=1000 uid=1000 gid=1000 euid=1000 suid=1000 fsuid=1000 egid=1000 sgid=1000 fsgid=1000 tty=(none) ses=2 comm=lpstat exe=/usr/bin/lpstat.cups subj=unconfined_u:unconfined_r:lpr_t:s0-s0:c0.c1023 key=(null)
:Hash: lpstat,lpr_t,user_tmp_t,sock_file,write
:audit2allowunable to open /sys/fs/selinux/policy:  Permission denied
:audit2allow -Runable to open /sys/fs/selinux/policy:  Permission denied
Comment 1 Daniel Walsh 2012-05-24 09:52:00 EDT
Any idea why this access is required?
Comment 2 Miroslav Grepl 2012-05-24 09:56:27 EDT
I have been googling but no answer.

Did you setup CUPS somehow together with PKCS?
Comment 3 Victor Costan 2012-05-27 00:17:59 EDT
I plugged a HP DeskJet 3054 printer (one of the printers that came for free with an Apple computer, if that helps), and followed the automated setup steps. I got this SElinux error when trying to print something from Firefox.
Comment 4 Victor Costan 2012-05-27 00:22:20 EDT
I just realized: I can print from programs that use the Gnome(?) printer dialog (e.g., evince). I get this error when trying to print from a Web site (jetblue.com's online checkin application) that uses Adobe Flash. One more reason to hate Flash, I guess.
Comment 5 Miroslav Grepl 2012-05-28 03:49:56 EDT
Did it work?
Comment 6 Victor Costan 2012-05-29 02:28:45 EDT
@Miroslav: Nope.

In the end, I got my boarding pass to print by installing cups-pdf, using the PDF printer from Flash, and then printing the PDF with evince. I guess Flash is doing something dumb.

When I did the PDF printing, the policy in this bug was already added.
Comment 7 Tim Waugh 2012-06-07 12:16:22 EDT
Looks like this could be a duplicate of bug #808933?
Comment 8 Daniel Walsh 2012-06-07 12:28:15 EDT
That links says he was executing within mozilla_plugin, this one says it is using lpr?
Comment 9 Daniel Walsh 2012-06-07 12:29:31 EDT
But I agree they both show it connecting to a pkcs socket.  Does lpr use some kind of authorization to print to certain printers?
Comment 10 Tim Waugh 2012-06-08 10:35:43 EDT
I think this happens from libp11-kit via gnutls.
Comment 11 Daniel Walsh 2012-06-08 11:29:21 EDT
Fixed in selinux-policy-3.10.0-130.fc17
Comment 12 Fedora Update System 2012-06-11 16:58:14 EDT
selinux-policy-3.10.0-130.fc17 has been submitted as an update for Fedora 17.
Comment 13 Fedora Update System 2012-06-15 19:56:02 EDT
Package selinux-policy-3.10.0-130.fc17:
* should fix your issue,
* was pushed to the Fedora 17 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing selinux-policy-3.10.0-130.fc17'
as soon as you are able to.
Please go to the following url:
then log in and leave karma (feedback).
Comment 14 Fedora Update System 2012-06-16 20:00:52 EDT
selinux-policy-3.10.0-130.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.

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