Bug 1037484
| Summary: | bmc-watchdog runs as init_t | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Milos Malik <mmalik> |
| Component: | selinux-policy | Assignee: | Lukas Vrabec <lvrabec> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Milos Malik <mmalik> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.0 | CC: | lvrabec, mgrepl, mmalik |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | selinux-policy-3.12.1-110.el7 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2014-06-13 12:49:30 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 877026 | ||
| Bug Blocks: | 848829, 1042753 | ||
Milos,
does it work with "watchdog_exec_t"?
I will add
commit 63b4dceb33ffbfb86516a257926a711b4c653d45
Author: Miroslav Grepl <mgrepl>
Date: Tue Dec 3 11:02:45 2013 +0100
Allow watchdog to be executed from cron
if yes.
After assigning watchdog_exec_t label to /usr/sbin/bmc-watchdog file following AVCs appeared in enforcing mode:
----
type=PATH msg=audit(12/03/2013 11:07:16.975:76987) : item=0 name=/dev/ipmi0 inod
e=4460792 dev=00:05 mode=character,644 ouid=root ogid=root rdev=f6:00 obj=unconf
ined_u:object_r:ipmi_device_t:s0 objtype=NORMAL
type=CWD msg=audit(12/03/2013 11:07:16.975:76987) : cwd=/
type=SYSCALL msg=audit(12/03/2013 11:07:16.975:76987) : arch=x86_64 syscall=open success=no exit=-13(Permission denied) a0=0x7f25959905c8 a1=O_RDWR a2=0x7f25980ab310 a3=0x7fffd0711710 items=1 ppid=18756 pid=18757 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=bmc-watchdog exe=/usr/sbin/bmc-watchdog subj=system_u:system_r:watchdog_t:s0 key=(null)
type=AVC msg=audit(12/03/2013 11:07:16.975:76987) : avc: denied { read write } for pid=18757 comm=bmc-watchdog name=ipmi0 dev="devtmpfs" ino=4460792 scontext=system_u:system_r:watchdog_t:s0 tcontext=unconfined_u:object_r:ipmi_device_t:s0 tclass=chr_file
----
type=PATH msg=audit(12/03/2013 11:07:16.976:76988) : item=0 name=/dev/mem inode=1027 dev=00:05 mode=character,640 ouid=root ogid=kmem rdev=01:01 obj=system_u:object_r:memory_device_t:s0 objtype=NORMAL
type=CWD msg=audit(12/03/2013 11:07:16.976:76988) : cwd=/
type=SYSCALL msg=audit(12/03/2013 11:07:16.976:76988) : arch=x86_64 syscall=open success=no exit=-13(Permission denied) a0=0x7f2595997d2b a1=O_RDONLY a2=0x10000 a3=0x7fffd0711bb0 items=1 ppid=1 pid=18757 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=bmc-watchdog exe=/usr/sbin/bmc-watchdog subj=system_u:system_r:watchdog_t:s0 key=(null)
type=AVC msg=audit(12/03/2013 11:07:16.976:76988) : avc: denied { read } for pid=18757 comm=bmc-watchdog name=mem dev="devtmpfs" ino=1027 scontext=system_u:system_r:watchdog_t:s0 tcontext=system_u:object_r:memory_device_t:s0 tclass=chr_file
----
type=PATH msg=audit(12/03/2013 11:07:16.977:77037) : item=0 name=/var/lib/freeipmi/ipckey inode=2494726 dev=08:04 mode=file,644 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:var_lib_t:s0 objtype=NORMAL
type=CWD msg=audit(12/03/2013 11:07:16.977:77037) : cwd=/
type=SYSCALL msg=audit(12/03/2013 11:07:16.977:77037) : arch=x86_64 syscall=stat success=no exit=-13(Permission denied) a0=0x7f2595990541 a1=0x7fffd0711890 a2=0x7fffd0711890 a3=0x3 items=1 ppid=1 pid=18757 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=bmc-watchdog exe=/usr/sbin/bmc-watchdog subj=system_u:system_r:watchdog_t:s0 key=(null)
type=AVC msg=audit(12/03/2013 11:07:16.977:77037) : avc: denied { getattr } for pid=18757 comm=bmc-watchdog path=/var/lib/freeipmi/ipckey dev="sda4" ino=2494726 scontext=system_u:system_r:watchdog_t:s0 tcontext=system_u:object_r:var_lib_t:s0 tclass=file
----
Milos, I see $ rpm -ql freeipmi-bmc-watchdog /etc/sysconfig/bmc-watchdog /usr/lib/systemd/system/bmc-watchdog.service /usr/sbin/bmc-watchdog /usr/share/doc/freeipmi/COPYING.bmc-watchdog /usr/share/doc/freeipmi/DISCLAIMER.bmc-watchdog /usr/share/doc/freeipmi/DISCLAIMER.bmc-watchdog.UC /usr/share/man/man8/bmc-watchdog.8.gz on my F20 system. It looks the /var/lib/freeipmi is created on the fly. It's a part of another package: # rpm -qf /var/lib/freeipmi freeipmi-1.2.9-2.el7.x86_64 # rpm -qf /var/lib/freeipmi/ipckey freeipmi-1.2.9-2.el7.x86_64 # Ok, taking back. We have more services from freeipmi which run as init_t. So we would introduce freeipmi.pp https://bugzilla.redhat.com/show_bug.cgi?id=1037475 https://bugzilla.redhat.com/show_bug.cgi?id=1037459 commit dee0ab128c1730828e041645811da995a2929f0b
Author: Miroslav Grepl <mgrepl>
Date: Thu Dec 5 17:11:53 2013 +0100
Add policy for freeipmi services
commit 635d073c3124218716c94266a511366d3cb69de6
Author: Miroslav Grepl <mgrepl>
Date: Thu Dec 12 15:00:06 2013 +0100
Update freeipmi policy
This request was resolved in Red Hat Enterprise Linux 7.0. Contact your manager or support representative in case you have further questions about the request. |
Description of problem: * bmc-watchdog uses too powerful SELinux domain Version-Release number of selected component (if applicable): freeipmi-bmc-watchdog-1.2.9-2.el7.x86_64 selinux-policy-3.12.1-105.el7.noarch selinux-policy-devel-3.12.1-105.el7.noarch selinux-policy-doc-3.12.1-105.el7.noarch selinux-policy-minimum-3.12.1-105.el7.noarch selinux-policy-mls-3.12.1-105.el7.noarch selinux-policy-targeted-3.12.1-105.el7.noarch How reproducible: always Steps to Reproduce: # service bmc-watchdog status Redirecting to /bin/systemctl status bmc-watchdog.service bmc-watchdog.service - BMC Watchdog Timer Daemon Loaded: loaded (/usr/lib/systemd/system/bmc-watchdog.service; disabled) Active: inactive (dead) # service bmc-watchdog start Redirecting to /bin/systemctl start bmc-watchdog.service # service bmc-watchdog status Redirecting to /bin/systemctl status bmc-watchdog.service bmc-watchdog.service - BMC Watchdog Timer Daemon Loaded: loaded (/usr/lib/systemd/system/bmc-watchdog.service; disabled) Active: active (running) since Tue 2013-12-03 10:24:02 CET; 982ms ago Process: 6723 ExecStart=/usr/sbin/bmc-watchdog $OPTIONS (code=exited, status=0/SUCCESS) Main PID: 6725 (bmc-watchdog) CGroup: /system.slice/bmc-watchdog.service └─6725 /usr/sbin/bmc-watchdog -d -u 4 -p 0 -a 1 -F -P -L -S -O -i ... Dec 03 10:24:02 rhel70.localdomain systemd[1]: Starting BMC Watchdog Timer D.... Dec 03 10:24:02 rhel70.localdomain systemd[1]: Started BMC Watchdog Timer Da.... Hint: Some lines were ellipsized, use -l to show in full. # ps -efZ | grep bmc-watchdog system_u:system_r:init_t:s0 root 6725 1 36 10:24 ? 00:00:04 /usr/sbin/bmc-watchdog -d -u 4 -p 0 -a 1 -F -P -L -S -O -i 900 -e 60 unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 root 6738 2416 0 10:24 pts/0 00:00:00 grep --color=auto bmc-watchdog # Actual results: * bmc-watchdog runs as init_t Expected results: * bmc-watchdog runs in its own SELinux domain