Bug 1119417 - SELinux is preventing /usr/lib64/erlang/erts-5.10.4/bin/beam.smp from 'write' accesses on the directory .
Summary: SELinux is preventing /usr/lib64/erlang/erts-5.10.4/bin/beam.smp from 'write'...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: 20
Hardware: x86_64
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Lukas Vrabec
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: abrt_hash:da934cfa7b8eaa266c8d74c8566...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-07-14 17:50 UTC by bart.vanpelt
Modified: 2014-08-30 03:54 UTC (History)
5 users (show)

Fixed In Version: selinux-policy-3.12.1-182.fc20
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-08-30 03:54:49 UTC


Attachments (Terms of Use)

Description bart.vanpelt 2014-07-14 17:50:11 UTC
Description of problem:
as root:
fresh install of fedora core 20 (12-july-2014)
updated installation yum -y update
installed docker
yum -y install docker-io
started docker
systemctl start docker.service

as normal user
Download sources for couchdb from https://registry.hub.docker.com/u/fedora/couchdb/ 
using build bundle http://trustedbuilds-staging.s3.amazonaws.com/sources/bbxpjv5ah2xndl3poh4abqq.tar.gz 

create $HOME/couchdb directory
extract downloaded bundle in couchdb directory

Edit Docker file from $HOME/couchdb directory, result:
FROM fedora:20
MAINTAINER dockerxxxxx <xxxxxx@gmail.com>

RUN  yum -y update; yum clean all
RUN  yum -y install couchdb; yum clean all

RUN  sed -e 's/^bind_address = .*$/bind_address = 0.0.0.0/' -i /etc/couchdb/default.ini

EXPOSE  5984

CMD ["/bin/sh", "-e", "/usr/bin/couchdb", "-a", "/etc/couchdb/default.ini", "-a", "/etc/couchdb/local.ini", "-b", "-r", "5", "-p", "/var/run/couchdb/couchdb.pid", "-o", "/dev/null", "-e", "/dev/null", "-R"]

get docker version
# docker version

build docker image using Dockerfile from $HOME/couchdb directory
# docker build -rm -t dockerpinguin/couchdb .

Start docker image
docker run -d -p 5984:5984 dockerpinguin/couchdb



SELinux is preventing /usr/lib64/erlang/erts-5.10.4/bin/beam.smp from 'write' accesses on the directory .

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that beam.smp should be allowed write access on the  directory 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 beam.smp /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:svirt_lxc_net_t:s0:c391,c673
Target Context                system_u:object_r:proc_t:s0
Target Objects                 [ dir ]
Source                        beam.smp
Source Path                   /usr/lib64/erlang/erts-5.10.4/bin/beam.smp
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.12.1-176.fc20.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 3.15.4-200.fc20.x86_64 #1 SMP Mon
                              Jul 7 14:24:41 UTC 2014 x86_64 x86_64
Alert Count                   1
First Seen                    2014-07-14 19:39:26 CEST
Last Seen                     2014-07-14 19:39:26 CEST
Local ID                      a3522a1a-f1c2-4b80-a7e2-375ec5d7f2ed

Raw Audit Messages
type=AVC msg=audit(1405359566.829:469): avc:  denied  { write } for  pid=3169 comm="beam.smp" name="/" dev="proc" ino=1 scontext=system_u:system_r:svirt_lxc_net_t:s0:c391,c673 tcontext=system_u:object_r:proc_t:s0 tclass=dir


type=SYSCALL msg=audit(1405359566.829:469): arch=x86_64 syscall=access success=no exit=EACCES a0=7f65c9f01078 a1=2 a2=0 a3=1 items=0 ppid=3155 pid=3169 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=beam.smp exe=/usr/lib64/erlang/erts-5.10.4/bin/beam.smp subj=system_u:system_r:svirt_lxc_net_t:s0:c391,c673 key=(null)

Hash: beam.smp,svirt_lxc_net_t,proc_t,dir,write

Additional info:
reporter:       libreport-2.2.2
hashmarkername: setroubleshoot
kernel:         3.15.4-200.fc20.x86_64
type:           libreport

Comment 1 Miroslav Grepl 2014-07-16 09:47:30 UTC
Lukas is going to work on erlang SELinux issues soon.

Comment 2 Miroslav Grepl 2014-07-16 09:50:30 UTC
Actually it relates also with docker.

Comment 3 Daniel Walsh 2014-07-16 12:43:10 UTC
This is just an access check, I guess we can add a dontaudit check for it.

Comment 4 Daniel Walsh 2014-07-16 12:52:04 UTC
540a3bb0eea31d85bbfc1c1c3bcb418fbc8e7b93 fixes this in git.  Needs back port to RHEL7 also.

Comment 5 Miroslav Grepl 2014-07-17 05:40:36 UTC
(In reply to Daniel Walsh from comment #3)
> This is just an access check, I guess we can add a dontaudit check for it.

Ah yes, I overlooked it.

Comment 6 Lukas Vrabec 2014-08-27 12:52:25 UTC
commit 8b235e3aa3a4ab372736489fee47bf4631d3aeda
Author: Dan Walsh <dwalsh@redhat.com>
Date:   Wed Jul 16 08:51:26 2014 -0400

    Dontaudit svirt_sandbox_domain doing access checks on /proc

https://github.com/selinux-policy/selinux-policy/commit/8b235e3aa3a4ab372736489fee47bf4631d3aeda

Comment 7 Fedora Update System 2014-08-27 14:52:51 UTC
selinux-policy-3.12.1-182.fc20 has been submitted as an update for Fedora 20.
https://admin.fedoraproject.org/updates/selinux-policy-3.12.1-182.fc20

Comment 8 Fedora Update System 2014-08-28 15:30:42 UTC
Package selinux-policy-3.12.1-182.fc20:
* should fix your issue,
* was pushed to the Fedora 20 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing selinux-policy-3.12.1-182.fc20'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2014-9819/selinux-policy-3.12.1-182.fc20
then log in and leave karma (feedback).

Comment 9 Fedora Update System 2014-08-30 03:54:49 UTC
selinux-policy-3.12.1-182.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.


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