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Bug 1551585 - Selinux policy block container from creating sockets - avc: denied { create } comm="yum" scontext=system_u:system_r:container_t:s0:c14,c957 tcontext=system_u:system_r:container_t:s0:c14,c957 tclass=udp_socket
Summary: Selinux policy block container from creating sockets - avc: denied { create...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: container-selinux
Version: 7.5
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Lokesh Mandvekar
QA Contact: atomic-bugs@redhat.com
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-03-05 13:05 UTC by Michael Mráka
Modified: 2023-09-14 04:17 UTC (History)
7 users (show)

Fixed In Version: container-selinux-2.51-1.el7
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-04-11 00:03:10 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2018:1073 0 None None None 2018-04-11 00:03:32 UTC

Description Michael Mráka 2018-03-05 13:05:40 UTC 
Description of problem:
Can't run yum install or postgresql database in container.
Selinux policy prevents containers from creating sockets.

Version-Release number of selected component (if applicable):
selinux-policy-3.13.1-192.el7.noarch

How reproducible:
always

Steps to Reproduce:
1. on RHEL 7.5 host with selinux-policy-3.13.1-192.el7.noarch run e.g.:
2. docker run  --rm rhel7 yum list bash
3. grep AVC /var/log/audit.log


Actual results:
$ docker run  --rm rhel7 yum list bash
Loaded plugins: ovl, product-id, search-disabled-repos, subscription-manager
https://cdn.redhat.com/content/rc/rhel/server/7/x86_64/os/repodata/repomd.xml: [Errno 14] curl#6 - "Could not resolve host: cdn.redhat.com; Name or service not known"
Trying other mirror.
...
$ grep AVC /var/log/audit.log
type=AVC msg=audit(1520253563.959:457): avc:  denied  { create } for  pid=8292 comm="yum" scontext=system_u:system_r:container_t:s0:c14,c957 tcontext=system_u:system_r:container_t:s0:c14,c957 tclass=udp_socket

Expected results:
$ docker run  --rm rhel7 yum list bash
Loaded plugins: ovl, product-id, search-disabled-repos, subscription-manager
Installed Packages
bash.x86_64                4.2.46-21.el7_3                @anaconda/7.3         
Available Packages
bash.x86_64                4.2.46-30.el7                  rhel-7-server-htb-rpms


Additional info:
Downgrading to selinux-policy-3.13.1-166.el7.noarch fixes problem.
Comment 1 Lukas Vrabec 2018-03-05 21:15:39 UTC 
Dan, 

Could it be caused by renaming by update container-policy? Some kind of regression? 

In -166 it's working but in -192 not. 

Lukas.
Comment 2 Lokesh Mandvekar 2018-03-07 21:06:16 UTC 
seems to work just fine for me:

lsm5 @ rhel75 : ~(master) $ sudo docker run --rm rhel7 yum list bash
Loaded plugins: ovl, product-id, search-disabled-repos, subscription-manager
This system is not receiving updates. You can use subscription-manager on the host to register and assign subscriptions.
Installed Packages
bash.x86_64                    4.2.46-29.el7_4                     @anaconda/7.4


lsm5 @ rhel75 : ~(master) $ rpm -q container-selinux selinux-policy docker
container-selinux-2.50-1.el7.noarch
selinux-policy-3.13.1-192.el7.noarch
docker-1.13.1-55.rhel75.git774336d.el7.x86_64
Comment 7 errata-xmlrpc 2018-04-11 00:03:10 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:1073
Comment 8 Red Hat Bugzilla 2023-09-14 04:17:19 UTC 
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 1000 days
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