Bug 1260536

Summary:	AVC is triggered when accessing ganglia web UI
Product:	Red Hat Enterprise Linux 7	Reporter:	Milos Malik <mmalik>
Component:	selinux-policy	Assignee:	Lukas Vrabec <lvrabec>
Status:	CLOSED ERRATA	QA Contact:	Milos Malik <mmalik>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.3	CC:	dyocum, lvrabec, mgrepl, mmalik, plautrba, pvrabec, ssekidde
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	selinux-policy-3.13.1-82.el7	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	1219900	Environment:
Last Closed:	2016-11-04 02:21:58 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:

Description Milos Malik 2015-09-07 08:13:49 UTC

Description:
 * when the httpd_can_network_connect boolean is disabled, even more AVCs are triggered, but I believe that the boolean should be enabled in this case

NVRs:
ganglia-3.7.1-3.el7.x86_64
ganglia-gmetad-3.7.1-3.el7.x86_64
ganglia-gmond-3.7.1-3.el7.x86_64
ganglia-web-3.7.0-3.el7.x86_64
selinux-policy-3.13.1-46.el7.noarch
selinux-policy-devel-3.13.1-46.el7.noarch
selinux-policy-doc-3.13.1-46.el7.noarch
selinux-policy-minimum-3.13.1-46.el7.noarch
selinux-policy-mls-3.13.1-46.el7.noarch
selinux-policy-sandbox-3.13.1-46.el7.noarch
selinux-policy-targeted-3.13.1-46.el7.noarch

Steps to Reproduce:
# yum -y install ganglia-gmond ganglia-gmetad ganglia-web
# service gmond start
# service gmetad start
# service httpd start
# links http://localhost/ganglia

Actual results (enforcing mode):
----
type=PATH msg=audit(09/07/2015 09:55:18.265:274) : item=0 name=/var/lib/ganglia/dwoo/compiled/./ inode=21826000 dev=fd:02 mode=dir,755 ouid=apache ogid=apache rdev=00:00 obj=system_u:object_r:var_lib_t:s0 objtype=NORMAL 
type=CWD msg=audit(09/07/2015 09:55:18.265:274) :  cwd=/usr/share/ganglia 
type=SYSCALL msg=audit(09/07/2015 09:55:18.265:274) : arch=x86_64 syscall=chmod success=no exit=-13(Permission denied) a0=0x7f63e0f05f10 a1=0777 a2=0x7f63dcc79b40 a3=0x7f63dcc4ff30 items=1 ppid=5565 pid=5569 auid=unset uid=apache gid=apache euid=apache suid=apache fsuid=apache egid=apache sgid=apache fsgid=apache tty=(none) ses=unset comm=httpd exe=/usr/sbin/httpd subj=system_u:system_r:httpd_t:s0 key=(null) 
type=AVC msg=audit(09/07/2015 09:55:18.265:274) : avc:  denied  { setattr } for  pid=5569 comm=httpd name=compiled dev="vda2" ino=21826000 scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:object_r:var_lib_t:s0 tclass=dir 
----

Expected results:
 * no AVCs

Additional information:
 * http://maciek.lasyk.info/sysop/2013/09/29/selinux-ganglia-multicast-apache-rrds/

Comment 1 Milos Malik 2015-09-07 08:22:32 UTC

Following AVC appears in permissive mode:
----
type=PATH msg=audit(09/07/2015 10:17:21.215:363) : item=0 name=/var/lib/ganglia/dwoo/compiled/./ inode=21826000 dev=fd:02 mode=dir,777 ouid=apache ogid=apache rdev=00:00 obj=system_u:object_r:var_lib_t:s0 objtype=NORMAL 
type=CWD msg=audit(09/07/2015 10:17:21.215:363) :  cwd=/usr/share/ganglia 
type=SYSCALL msg=audit(09/07/2015 10:17:21.215:363) : arch=x86_64 syscall=chmod success=yes exit=0 a0=0x7f94ca8aae60 a1=0777 a2=0x7f94c6a20b40 a3=0x7f94c69f6f30 items=1 ppid=7141 pid=7150 auid=unset uid=apache gid=apache euid=apache suid=apache fsuid=apache egid=apache sgid=apache fsgid=apache tty=(none) ses=unset comm=httpd exe=/usr/sbin/httpd subj=system_u:system_r:httpd_t:s0 key=(null) 
type=AVC msg=audit(09/07/2015 10:17:21.215:363) : avc:  denied  { setattr } for  pid=7150 comm=httpd name=compiled dev="vda2" ino=21826000 scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:object_r:var_lib_t:s0 tclass=dir 
----

# ls -aRZ /var/lib/ganglia/dwoo/
/var/lib/ganglia/dwoo/:
drwxr-xr-x. apache apache system_u:object_r:var_lib_t:s0   .
drwxr-xr-x. root   root   system_u:object_r:var_lib_t:s0   ..
drwxr-xr-x. apache apache system_u:object_r:var_lib_t:s0   cache
drwxrwxrwx. apache apache system_u:object_r:var_lib_t:s0   compiled

/var/lib/ganglia/dwoo/cache:
drwxr-xr-x. apache apache system_u:object_r:var_lib_t:s0   .
drwxr-xr-x. apache apache system_u:object_r:var_lib_t:s0   ..

/var/lib/ganglia/dwoo/compiled:
drwxrwxrwx. apache apache system_u:object_r:var_lib_t:s0   .
drwxr-xr-x. apache apache system_u:object_r:var_lib_t:s0   ..
-rw-r--r--. apache apache system_u:object_r:httpd_var_lib_t:s0 classpath.cache.d17.php
drwxrwxrwx. apache apache system_u:object_r:httpd_var_lib_t:s0 templates

/var/lib/ganglia/dwoo/compiled/templates:
drwxrwxrwx. apache apache system_u:object_r:httpd_var_lib_t:s0 .
drwxrwxrwx. apache apache system_u:object_r:var_lib_t:s0   ..
drwxrwxrwx. apache apache system_u:object_r:httpd_var_lib_t:s0 default

/var/lib/ganglia/dwoo/compiled/templates/default:
drwxrwxrwx. apache apache system_u:object_r:httpd_var_lib_t:s0 .
drwxrwxrwx. apache apache system_u:object_r:httpd_var_lib_t:s0 ..
-rwxrwxrwx. apache apache system_u:object_r:httpd_var_lib_t:s0 cluster_extra.tpl.d17.php
-rwxrwxrwx. apache apache system_u:object_r:httpd_var_lib_t:s0 cluster_host_metric_graphs.tpl.d17.php
-rwxrwxrwx. apache apache system_u:object_r:httpd_var_lib_t:s0 cluster_overview.tpl.d17.php
-rwxrwxrwx. apache apache system_u:object_r:httpd_var_lib_t:s0 cluster_view.tpl.d17.php
-rwxrwxrwx. apache apache system_u:object_r:httpd_var_lib_t:s0 footer.tpl.d17.php
-rwxrwxrwx. apache apache system_u:object_r:httpd_var_lib_t:s0 header.tpl.d17.php
# 

restorecon -Rv /var/lib/ganglia restores labels to var_lib_t, which is incorrect in my opinion.

Comment 8 errata-xmlrpc 2016-11-04 02:21:58 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-2016-2283.html