Bug 679201

Summary: SELinux is preventing /usr/lib64/nspluginwrapper/plugin-config from read, write access on the chr_file /dev/ptmx.
Product: [Fedora] Fedora Reporter: Flóki Pálsson <flokip>
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 15CC: dwalsh, mgrepl, watzkej
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard: setroubleshoot_trace_hash:3535e78e6d863992b29285d553ec2c4b3b69f101538680e59dac5ab6e90eb83d
Fixed In Version: selinux-policy-3.9.16-1.fc15 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-03-10 03:10:22 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 Flóki Pálsson 2011-02-21 21:14:32 UTC
SELinux is preventing /usr/lib64/nspluginwrapper/plugin-config from read, write access on the chr_file /dev/ptmx.

*****  Plugin leaks (50.5 confidence) suggests  ******************************

If you want to ignore plugin-config trying to read write access the ptmx chr_file, because you believe it should not need this access.
Then you should report this as a bug.  
You can generate a local policy module to dontaudit this access.
Do
# grep /usr/lib64/nspluginwrapper/plugin-config /var/log/audit/audit.log | audit2allow -D -M mypol
# semodule -i mypol.pp

*****  Plugin catchall (50.5 confidence) suggests  ***************************

If you believe that plugin-config should be allowed read write access on the ptmx chr_file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep plugin-config /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                unconfined_u:unconfined_r:nsplugin_config_t:s0-s0:
                              c0.c1023
Target Context                system_u:object_r:ptmx_t:s0
Target Objects                /dev/ptmx [ chr_file ]
Source                        plugin-config
Source Path                   /usr/lib64/nspluginwrapper/plugin-config
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           nspluginwrapper-1.3.0-17.fc15
Target RPM Packages           
Policy RPM                    selinux-policy-3.9.14-2.fc15
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 2.6.38-0.rc5.git1.1.fc15.x86_64 #1
                              SMP Thu Feb 17 01:49:02 UTC 2011 x86_64 x86_64
Alert Count                   3
First Seen                    fim 17.feb 2011, 00:53:56 GMT
Last Seen                     lau 19.feb 2011, 10:12:23 GMT
Local ID                      b24a6ecf-885a-48f2-b419-ba705b34c7f7

Raw Audit Messages
type=AVC msg=audit(1298110343.250:481): avc:  denied  { read write } for  pid=2198 comm="plugin-config" path="/dev/ptmx" dev=devtmpfs ino=1077 scontext=unconfined_u:unconfined_r:nsplugin_config_t:s0-s0:c0.c1023 tcontext=system_u:object_r:ptmx_t:s0 tclass=chr_file


type=SYSCALL msg=audit(1298110343.250:481): arch=x86_64 syscall=execve success=yes exit=0 a0=149a5d0 a1=149a510 a2=149acd0 a3=1 items=0 ppid=2196 pid=2198 auid=500 uid=500 gid=500 euid=0 suid=0 fsuid=0 egid=500 sgid=500 fsgid=500 tty=(none) ses=2 comm=plugin-config exe=/usr/lib64/nspluginwrapper/plugin-config subj=unconfined_u:unconfined_r:nsplugin_config_t:s0-s0:c0.c1023 key=(null)

Hash: plugin-config,nsplugin_config_t,ptmx_t,chr_file,read,write

audit2allow

#============= nsplugin_config_t ==============
allow nsplugin_config_t ptmx_t:chr_file { read write };

audit2allow -R

#============= nsplugin_config_t ==============
allow nsplugin_config_t ptmx_t:chr_file { read write };

Comment 1 Flóki Pálsson 2011-02-21 21:16:49 UTC
See also Bug 678784

Comment 2 Daniel Walsh 2011-02-21 22:24:13 UTC
Looks like a leak.

Comment 3 Daniel Walsh 2011-02-21 22:27:06 UTC
term_dontaudit_use_ptmx(nsplugin_t)

Comment 4 Daniel Walsh 2011-02-21 22:27:44 UTC
Please add to F13/F14 also.

Comment 5 Miroslav Grepl 2011-02-25 12:16:23 UTC
Fixed in selinux-policy-3.9.7-32.fc14

Comment 6 Fedora Update System 2011-03-08 15:39:41 UTC
selinux-policy-3.9.16-1.fc15 has been submitted as an update for Fedora 15.
https://admin.fedoraproject.org/updates/selinux-policy-3.9.16-1.fc15

Comment 7 Fedora Update System 2011-03-10 03:09:44 UTC
selinux-policy-3.9.16-1.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.