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Bug 1236616 - SELinux prevents systemd-networkd from communicating with sssd
Summary: SELinux prevents systemd-networkd from communicating with sssd
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: selinux-policy
Version: 7.2
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: 7.2
Assignee: Lukas Vrabec
QA Contact: Milos Malik
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-06-29 14:42 UTC by Milos Malik
Modified: 2015-11-19 10:38 UTC (History)
6 users (show)

Fixed In Version: selinux-policy-3.13.1-43.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-11-19 10:38:26 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:2300 0 normal SHIPPED_LIVE selinux-policy bug fix update 2015-11-19 09:55:26 UTC

Description Milos Malik 2015-06-29 14:42:58 UTC 
Description of problem:
 * when /etc/nsswitch.conf is configured in such a way that system services communicate with SSSD

Version-Release number of selected component (if applicable):
selinux-policy-mls-3.13.1-29.el7.noarch
selinux-policy-sandbox-3.13.1-29.el7.noarch
selinux-policy-targeted-3.13.1-29.el7.noarch
selinux-policy-doc-3.13.1-29.el7.noarch
selinux-policy-3.13.1-29.el7.noarch
selinux-policy-devel-3.13.1-29.el7.noarch
selinux-policy-minimum-3.13.1-29.el7.noarch

How reproducible:
always

Steps to Reproduce:
# ps -efZ | grep networkd
unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 root 5060 2199  0 16:39 pts/0 00:00:00 grep --color=auto networkd
# service systemd-networkd start
Redirecting to /bin/systemctl start  systemd-networkd.service
# ps -efZ | grep networkd
system_u:system_r:systemd_networkd_t:s0 systemd+ 5076 1  0 16:39 ?     00:00:00 /usr/lib/systemd/systemd-networkd
unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 root 5176 2199  0 16:39 pts/0 00:00:00 grep --color=auto networkd
#

Actual results (enforcing mode):
----
type=PATH msg=audit(06/29/2015 16:36:03.276:228) : item=0 name=/var/lib/sss/mc/passwd inode=17910099 dev=fd:03 mode=file,644 ouid=sssd ogid=sssd rdev=00:00 obj=system_u:object_r:sssd_public_t:s0 objtype=NORMAL 
type=CWD msg=audit(06/29/2015 16:36:03.276:228) :  cwd=/ 
type=SYSCALL msg=audit(06/29/2015 16:36:03.276:228) : arch=x86_64 syscall=open success=yes exit=5 a0=0x7f8bbca1d260 a1=O_RDONLY|O_CLOEXEC a2=0x7ffd54ceafe4 a3=0x7ffd54cead20 items=1 ppid=1 pid=4890 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=systemd-network exe=/usr/lib/systemd/systemd-networkd subj=system_u:system_r:systemd_networkd_t:s0 key=(null) 
type=AVC msg=audit(06/29/2015 16:36:03.276:228) : avc:  denied  { open } for  pid=4890 comm=systemd-network path=/var/lib/sss/mc/passwd dev="vda3" ino=17910099 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:sssd_public_t:s0 tclass=file 
type=AVC msg=audit(06/29/2015 16:36:03.276:228) : avc:  denied  { read } for  pid=4890 comm=systemd-network name=passwd dev="vda3" ino=17910099 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:sssd_public_t:s0 tclass=file 
----
type=SYSCALL msg=audit(06/29/2015 16:36:03.281:229) : arch=x86_64 syscall=fstat success=yes exit=0 a0=0x5 a1=0x7ffd54ceaff0 a2=0x7ffd54ceaff0 a3=0x7ffd54cead50 items=0 ppid=1 pid=4890 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=systemd-network exe=/usr/lib/systemd/systemd-networkd subj=system_u:system_r:systemd_networkd_t:s0 key=(null) 
type=AVC msg=audit(06/29/2015 16:36:03.281:229) : avc:  denied  { getattr } for  pid=4890 comm=systemd-network path=/var/lib/sss/mc/passwd dev="vda3" ino=17910099 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:sssd_public_t:s0 tclass=file 
----
type=PATH msg=audit(06/29/2015 16:36:03.281:230) : item=0 name=/var/lib/sss/pipes/nss inode=34398181 dev=fd:03 mode=socket,666 ouid=sssd ogid=sssd rdev=00:00 obj=system_u:object_r:sssd_var_lib_t:s0 objtype=NORMAL 
type=CWD msg=audit(06/29/2015 16:36:03.281:230) :  cwd=/ 
type=SOCKADDR msg=audit(06/29/2015 16:36:03.281:230) : saddr=local /var/lib/sss/pipes/nss 
type=SYSCALL msg=audit(06/29/2015 16:36:03.281:230) : arch=x86_64 syscall=connect success=no exit=-111(Connection refused) a0=0x6 a1=0x7ffd54ceafb0 a2=0x6e a3=0x7ffd54ceacd0 items=1 ppid=1 pid=4890 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=systemd-network exe=/usr/lib/systemd/systemd-networkd subj=system_u:system_r:systemd_networkd_t:s0 key=(null) 
type=AVC msg=audit(06/29/2015 16:36:03.281:230) : avc:  denied  { write } for  pid=4890 comm=systemd-network name=nss dev="vda3" ino=34398181 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:sssd_var_lib_t:s0 tclass=sock_file 
----

Expected results:
 * no AVCs
Comment 1 Milos Malik 2015-06-29 14:46:04 UTC 
Caught in permissive mode:
----
type=PATH msg=audit(06/29/2015 16:44:41.119:261) : item=0 name=/var/lib/sss/mc/passwd inode=17910099 dev=fd:03 mode=file,644 ouid=sssd ogid=sssd rdev=00:00 obj=system_u:object_r:sssd_public_t:s0 objtype=NORMAL 
type=CWD msg=audit(06/29/2015 16:44:41.119:261) :  cwd=/ 
type=SYSCALL msg=audit(06/29/2015 16:44:41.119:261) : arch=x86_64 syscall=open success=yes exit=5 a0=0x7fe99022f260 a1=O_RDONLY|O_CLOEXEC a2=0x7ffcd202f784 a3=0x7ffcd202f4c0 items=1 ppid=1 pid=5547 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=systemd-network exe=/usr/lib/systemd/systemd-networkd subj=system_u:system_r:systemd_networkd_t:s0 key=(null) 
type=AVC msg=audit(06/29/2015 16:44:41.119:261) : avc:  denied  { open } for  pid=5547 comm=systemd-network path=/var/lib/sss/mc/passwd dev="vda3" ino=17910099 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:sssd_public_t:s0 tclass=file 
type=AVC msg=audit(06/29/2015 16:44:41.119:261) : avc:  denied  { read } for  pid=5547 comm=systemd-network name=passwd dev="vda3" ino=17910099 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:sssd_public_t:s0 tclass=file 
----
type=SYSCALL msg=audit(06/29/2015 16:44:41.124:262) : arch=x86_64 syscall=fstat success=yes exit=0 a0=0x5 a1=0x7ffcd202f790 a2=0x7ffcd202f790 a3=0x7ffcd202f4f0 items=0 ppid=1 pid=5547 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=systemd-network exe=/usr/lib/systemd/systemd-networkd subj=system_u:system_r:systemd_networkd_t:s0 key=(null) 
type=AVC msg=audit(06/29/2015 16:44:41.124:262) : avc:  denied  { getattr } for  pid=5547 comm=systemd-network path=/var/lib/sss/mc/passwd dev="vda3" ino=17910099 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:sssd_public_t:s0 tclass=file 
----
type=PATH msg=audit(06/29/2015 16:44:41.124:263) : item=0 name=/var/lib/sss/pipes/nss inode=34398181 dev=fd:03 mode=socket,666 ouid=sssd ogid=sssd rdev=00:00 obj=system_u:object_r:sssd_var_lib_t:s0 objtype=NORMAL 
type=CWD msg=audit(06/29/2015 16:44:41.124:263) :  cwd=/ 
type=SOCKADDR msg=audit(06/29/2015 16:44:41.124:263) : saddr=local /var/lib/sss/pipes/nss 
type=SYSCALL msg=audit(06/29/2015 16:44:41.124:263) : arch=x86_64 syscall=connect success=no exit=-111(Connection refused) a0=0x6 a1=0x7ffcd202f750 a2=0x6e a3=0x7ffcd202f470 items=1 ppid=1 pid=5547 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=systemd-network exe=/usr/lib/systemd/systemd-networkd subj=system_u:system_r:systemd_networkd_t:s0 key=(null) 
type=AVC msg=audit(06/29/2015 16:44:41.124:263) : avc:  denied  { write } for  pid=5547 comm=systemd-network name=nss dev="vda3" ino=34398181 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:sssd_var_lib_t:s0 tclass=sock_file 
----
Comment 2 Lukas Vrabec 2015-06-30 08:15:53 UTC 
commit 23a3000b996dbba22c9b0b93e9b297af41d4a2e5
Author: Lukas Vrabec <lvrabec>
Date:   Tue Jun 30 10:14:49 2015 +0200

    Add systemd_networkd_t to nsswitch domains. BZ(1236616)
Comment 4 Lukas Vrabec 2015-08-13 08:22:05 UTC 
commit 045b55dafe27533df24c05e814400bacc47de353
Author: Lukas Vrabec <lvrabec>
Date:   Thu Aug 13 10:03:13 2015 +0200

    Allow systemd-networkd to send logs to systemd-journald.
    Resolves: #1236616
Comment 8 errata-xmlrpc 2015-11-19 10:38:26 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://rhn.redhat.com/errata/RHBA-2015-2300.html
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