Bug 563977

Summary: SELinux is preventing /usr/lib/cups/backend/cups-pdf "fowner" access.
Product: [Fedora] Fedora Reporter: Matt Castelein <matt.castelein>
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 12CC: dwalsh, mgrepl
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard: setroubleshoot_trace_hash:c0571ef8b3b1968919b456585f3a4bd1ba121b50b6cee3468888b4ba4795d0b3
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-02-15 17:24:51 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:

Description Matt Castelein 2010-02-11 16:43:43 UTC 
Summary:

SELinux is preventing /usr/lib/cups/backend/cups-pdf "fowner" access.

Detailed Description:

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

SELinux denied access requested by cups-pdf. It is not expected that this access
is required by cups-pdf 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                unconfined_u:system_r:cups_pdf_t:s0-s0:c0.c1023
Target Context                unconfined_u:system_r:cups_pdf_t:s0-s0:c0.c1023
Target Objects                None [ capability ]
Source                        cups-pdf
Source Path                   /usr/lib/cups/backend/cups-pdf
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           cups-pdf-2.5.0-3.fc12
Target RPM Packages           
Policy RPM                    selinux-policy-3.6.32-78.fc12
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Plugin Name                   catchall
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.31.12-174.2.3.fc12.x86_64 #1 SMP Mon Jan 18
                              19:52:07 UTC 2010 x86_64 x86_64
Alert Count                   1
First Seen                    Thu 11 Feb 2010 10:54:11 AM EST
Last Seen                     Thu 11 Feb 2010 10:54:11 AM EST
Local ID                      6db6930d-9b13-475c-b1ac-24a78801aea0
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1265903651.193:6651): avc:  denied  { fowner } for  pid=26567 comm="cups-pdf" capability=3 scontext=unconfined_u:system_r:cups_pdf_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:cups_pdf_t:s0-s0:c0.c1023 tclass=capability

node=(removed) type=SYSCALL msg=audit(1265903651.193:6651): arch=c000003e syscall=90 success=yes exit=0 a0=a075d0 a1=1c0 a2=0 a3=ffffffe9 items=0 ppid=26503 pid=26567 auid=500 uid=0 gid=7 euid=0 suid=0 fsuid=0 egid=7 sgid=7 fsgid=7 tty=(none) ses=1007 comm="cups-pdf" exe="/usr/lib/cups/backend/cups-pdf" subj=unconfined_u:system_r:cups_pdf_t:s0-s0:c0.c1023 key=(null)



Hash String generated from  selinux-policy-3.6.32-78.fc12,catchall,cups-pdf,cups_pdf_t,cups_pdf_t,capability,fowner
audit2allow suggests:

#============= cups_pdf_t ==============
allow cups_pdf_t self:capability fowner;
Comment 1 Daniel Walsh 2010-02-11 18:29:31 UTC 
Miroslav add this.
Comment 2 Miroslav Grepl 2010-02-12 16:30:27 UTC 
Could you execute:

yum update selinux-policy-targeted

And make sure nothing breaks on the update.
Comment 3 Matt Castelein 2010-02-12 16:57:45 UTC 
Updated; Doesn't look like anything broke...
Comment 4 Miroslav Grepl 2010-02-15 10:44:47 UTC 
Ok, this is a part of selinux-policy. 

Could you check it using

# sesearch -A -s cups_pdf_t -t cups_pdf_t --class capability --perm fowner

Found 1 semantic av rules:
   allow cups_pdf_t cups_pdf_t : capability { chown dac_override fowner fsetid setgid setuid } ; 


What is your output ?
Comment 5 Matt Castelein 2010-02-15 17:14:32 UTC 
Exactly the same as yours:

[root@arturo ~]# sesearch -A -s cups_pdf_t -t cups_pdf_t --class capability --perm fowner

Found 1 semantic av rules:
   allow cups_pdf_t cups_pdf_t : capability { chown dac_override fowner fsetid setgid setuid } ;
Comment 6 Miroslav Grepl 2010-02-15 17:24:51 UTC 
Ok, then I am closing this bug.