Bug 544014

Summary: SELinux is preventing /usr/bin/nautilus "execstack" access.
Product: [Fedora] Fedora Reporter: Suraj Prasad <masterofdestiny>
Component: selinux-policyAssignee: Daniel Walsh <dwalsh>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 12CC: dwalsh, mgrepl
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard: setroubleshoot_trace_hash:f6cebaefa66a107175d1f8d5f0a2fbc41ab7183fefe7f82984affd3a25e04873
Fixed In Version: 3.6.32-55.fc12 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-12-07 22:48:00 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 Suraj Prasad 2009-12-03 17:28:40 UTC 
Summary:

SELinux is preventing /usr/bin/nautilus "execstack" access.

Detailed Description:

SELinux denied access requested by nautilus. It is not expected that this access
is required by nautilus 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://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Please file a bug
report.

Additional Information:

Source Context                xguest_u:xguest_r:xguest_t:s0
Target Context                xguest_u:xguest_r:xguest_t:s0
Target Objects                None [ process ]
Source                        nautilus
Source Path                   /usr/bin/nautilus
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           nautilus-2.28.1-4.fc12
Target RPM Packages           
Policy RPM                    selinux-policy-3.6.32-46.fc12
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   catchall
Host Name                     (removed)
Platform                      Linux (removed) 2.6.31.5-127.fc12.i686 #1 SMP Sat
                              Nov 7 21:41:45 EST 2009 i686 i686
Alert Count                   2
First Seen                    Wed 02 Dec 2009 12:36:39 AM IST
Last Seen                     Wed 02 Dec 2009 12:36:39 AM IST
Local ID                      9a8d1cf3-1eb1-4dec-92a7-87bef8e1d424
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1259694399.835:71): avc:  denied  { execstack } for  pid=3801 comm="nautilus" scontext=xguest_u:xguest_r:xguest_t:s0 tcontext=xguest_u:xguest_r:xguest_t:s0 tclass=process

node=(removed) type=SYSCALL msg=audit(1259694399.835:71): arch=40000003 syscall=125 success=no exit=-13 a0=bfa2f000 a1=1000 a2=1000007 a3=bfa2de84 items=0 ppid=3518 pid=3801 auid=502 uid=502 gid=502 euid=502 suid=502 fsuid=502 egid=502 sgid=502 fsgid=502 tty=(none) ses=4 comm="nautilus" exe="/usr/bin/nautilus" subj=xguest_u:xguest_r:xguest_t:s0 key=(null)



Hash String generated from  selinux-policy-3.6.32-46.fc12,catchall,nautilus,xguest_t,xguest_t,process,execstack
audit2allow suggests:

#============= xguest_t ==============
allow xguest_t self:process execstack;
Comment 1 Daniel Walsh 2009-12-03 18:34:25 UTC 
Do you actually see anything blowing up or just reporting this AVC.
Comment 2 Suraj Prasad 2009-12-03 19:45:05 UTC 
I encountered this while viewing file properties.. When I asked for file properties the system didnt answer instead this message was shown.
Comment 3 Daniel Walsh 2009-12-03 19:52:59 UTC 
Yes it is probably caused by a bad library on your system. Probably from a closed source driver.

You can look for these drivers by using the execstack command.

https://bugzilla.redhat.com/show_bug.cgi?id=533987

Has an explanation of how to use the command.

I am going to add code to make xguest_t follow the allow_execstack boolean.


Fixed in selinux-policy-3.6.32-55.fc12.noarch
Comment 4 Fedora Update System 2009-12-03 20:28:53 UTC 
selinux-policy-3.6.32-55.fc12 has been submitted as an update for Fedora 12.
http://admin.fedoraproject.org/updates/selinux-policy-3.6.32-55.fc12
Comment 5 Fedora Update System 2009-12-04 23:47:12 UTC 
selinux-policy-3.6.32-55.fc12 has been pushed to the Fedora 12 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update selinux-policy'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F12/FEDORA-2009-12650
Comment 6 Fedora Update System 2009-12-08 07:53:51 UTC 
selinux-policy-3.6.32-55.fc12 has been pushed to the Fedora 12 stable repository.  If problems still persist, please make note of it in this bug report.