Bug 1402327

Summary: SELinux is preventing pptpcm from 'read' accesses on the chr_file random.
Product: [Fedora] Fedora Reporter: Paweł <pawel.wierzbicki.pl>
Component: selinux-policyAssignee: Lukas Vrabec <lvrabec>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 25CC: dominick.grift, dwalsh, jadecristal, lvrabec, mgrepl, plautrba, pmoore, ssekidde, twostageturbo
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard: abrt_hash:1155a531edb31bcaba1e9a8b992934a7cd95e1ca023fdb56a9726c4c0317fe89;VARIANT_ID=workstation;
Fixed In Version: selinux-policy-3.13.1-225.3.fc25 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-12-12 23:59:13 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Attachments:
Description Flags
SELinux detailed report, after dnf upgrade (5 mins ago) none

Description Paweł 2016-12-07 09:18:45 UTC 
Description of problem:
Before todays pptp upgrade, I couldn't use PPTP - it just didn't work, because nf_conntrack_pptp module was not loaded (it was not found/loaded on kernel 4.8.10, this bug => https://bugzilla.redhat.com/show_bug.cgi?id=1254340), but I didn't have the time to properly diagnose it.

Then I upgraded to the 4.8.11 kernel, and it still didn't work.

Then after todays pptp upgrade (1.9.0-1), this SELinux alert happens everytime i try to start pptp vpn. So basically I just can't use PPTP VPN on Fedora 25.
SELinux is preventing pptpcm from 'read' accesses on the chr_file random.

*****  Plugin catchall_boolean (89.3 confidence) suggests   ******************

If aby allow authlogin to nsswitch use ldap
Then należy powiadomić o tym SELinuksa włączając zmienną logiczną „authlogin_nsswitch_use_ldap”.
Na stronie podręcznika „None” znajduje się więcej informacji.
Do
setsebool -P authlogin_nsswitch_use_ldap 1

*****  Plugin catchall (11.6 confidence) suggests   **************************

If aby pptpcm powinno mieć domyślnie read dostęp do random chr_file.
Then proszę to zgłosić jako błąd.
Można utworzyć lokalny moduł polityki, aby umożliwić ten dostęp.
Do
allow this access for now by executing:
# ausearch -c 'pptpcm' --raw | audit2allow -M my-pptpcm
# semodule -X 300 -i my-pptpcm.pp

Additional Information:
Source Context                system_u:system_r:pptp_t:s0
Target Context                system_u:object_r:random_device_t:s0
Target Objects                random [ chr_file ]
Source                        pptpcm
Source Path                   pptpcm
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-224.fc25.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.8.11-300.fc25.x86_64 #1 SMP Mon
                              Nov 28 18:24:51 UTC 2016 x86_64 x86_64
Alert Count                   1
First Seen                    2016-12-07 09:55:34 CET
Last Seen                     2016-12-07 09:55:34 CET
Local ID                      d775628f-78d5-47c5-b852-b72eb8bd37a3

Raw Audit Messages
type=AVC msg=audit(1481100934.400:281): avc:  denied  { read } for  pid=2453 comm="pptpcm" name="random" dev="devtmpfs" ino=1032 scontext=system_u:system_r:pptp_t:s0 tcontext=system_u:object_r:random_device_t:s0 tclass=chr_file permissive=0


Hash: pptpcm,pptp_t,random_device_t,chr_file,read

Version-Release number of selected component:
selinux-policy-3.13.1-224.fc25.noarch

Additional info:
reporter:       libreport-2.8.0
hashmarkername: setroubleshoot
kernel:         4.8.11-300.fc25.x86_64
type:           libreport
Comment 1 Doktorn 2016-12-08 20:33:30 UTC 
Description of problem:
Connected to a VPN (PPTP) through network manager. PPTP provider require username and log in. I set that all users on the computer should share the password in Network manager.
SELINUX did not fully appreciate this feature.

Version-Release number of selected component:
selinux-policy-3.13.1-224.fc25.noarch

Additional info:
reporter:       libreport-2.8.0
hashmarkername: setroubleshoot
kernel:         4.8.11-300.fc25.x86_64
type:           libreport
Comment 2 Fedora Update System 2016-12-09 13:47:59 UTC 
selinux-policy-3.13.1-225.3.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2016-f24b3ddc6a
Comment 3 Fedora Update System 2016-12-10 03:58:39 UTC 
selinux-policy-3.13.1-225.3.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-f24b3ddc6a
Comment 4 Fedora Update System 2016-12-12 23:59:13 UTC 
selinux-policy-3.13.1-225.3.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.
Comment 5 Paweł 2016-12-13 21:57:32 UTC 
Created attachment 1231340 [details]
SELinux detailed report, after dnf upgrade (5 mins ago)

I upgraded 5 mins ago, and it still happens. Attached details of the report.
Comment 6 jadecristal 2017-01-04 12:53:50 UTC 
Description of problem:
Adding a PPTP connection to a vpn provider and setting options using solely the NetworkManager dialog boxes (disabling, from default, all by MSCHAPv2, and setting the Use Point-to-Point Encryption option) causes the error when attempting to bring the link up.

Version-Release number of selected component:
selinux-policy-3.13.1-225.3.fc25.noarch

Additional info:
reporter:       libreport-2.8.0
hashmarkername: setroubleshoot
kernel:         4.8.14-300.fc25.x86_64
type:           libreport