This bug was fixed in the package nagios3 - 3.5.1.dfsg-2.1ubuntu1.2
---------------
nagios3 (3.5.1.dfsg-2.1ubuntu1.2) xenial; urgency=medium
* debian/patches/fix_permissions_for_hostgroups_reports.patch: Fix
permissions for hostgroups reports. Thanks to John C. Frickson
<jfrick...@nagios.com>. Closes LP: #1686768.
-- aa...@unadopted.co.uk (Aaron B. Russell) Wed, 10 May 2017 22:43:53
+0100
** Changed in: nagios3 (Ubuntu Xenial)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1686768
Title:
Restricted contacts can see servers that do not belong to them
Status in nagios3 package in Ubuntu:
Fix Released
Status in nagios3 source package in Trusty:
Fix Committed
Status in nagios3 source package in Xenial:
Fix Released
Status in nagios3 source package in Yakkety:
Fix Committed
Status in nagios3 source package in Zesty:
Fix Committed
Bug description:
[Impact]
* It is possible for users to see information about servers that they
have not been given permission to see
* A fix should be backported because this is a security problem and
causes Nagios to leak data
* The patch introduces the proper checks on hostgroup permissions as
per Nagios 4.2.2
[Test Case]
* Configure Nagios to monitor multiple servers
* Create a second contact called "jbloggs" (in
/etc/nagios/conf.d/contacts_nagios2.cfg)
* Create a second contact group called "oneserver" containing the second
contact (in /etc/nagios/conf.d/contacts_nagios2.cfg)
* Set the contact_groups property for one of the servers to be
"admins,oneserver"
* Add an entry to /etc/nagios3/htpasswd.users for the "jbloggs" user
* Login to Nagios as "jbloggs"
* On the left hand nav, visit "Hostgroups", "Hostgroups -> Summary", and
"Hostgroups -> Grid", and observe that the "jbloggs" user can view information
about servers they don't have permission to see (full details including
screenshots can be found on the Nagios forum link below)
[Regression Potential]
* It's possible that this may create other issues when viewing
hostgroups in the Nagios web interface although I have not seen any
such issues, and this fix was deemed to be acceptable by the Nagios
core team in Nagios 4.2.2 (tracker link below) so I think the chances
of any issues are very low.
[Other Info]
* This fix is the same fix that was applied upstream in Nagios 4.2.2,
although as Ubuntu doesn't ship that version the fix never made it in
* This problem didn't exist under Precise as that ran Nagios 3.2.x so this
was an upstream regression that happened after that version
[Original Description]
There is a problem with the hostgroups reports that allows restricted
contacts to see servers that do not belong to them provided they are
in the same hostgroup.
This issue was reported to the Nagios project in 2013 here (with
screenshots, sample configs, etc):
https://support.nagios.com/forum/viewtopic.php?f=7&t=21794
It was fixed in Nagios 4.2.2 here:
https://github.com/NagiosEnterprises/nagioscore/commit/d1b3a07ff72ece0d296b153d4d5c8c4543ed96c1
#diff-b89a219dd5a0ac3e4e07f1dfd721dd78
This problem exists in Nagios 3.5.x that did not exist under 3.2.x,
however it seems likely that the fix in 4.2.2 could be backported to
Nagios 3.5.x.
lsb_release -rd output:
Description: Ubuntu 16.04.2 LTS
Release: 16.04
apt-cache policy nagios3 nagios3-cgi output:
nagios3:
Installed: 3.5.1.dfsg-2.1ubuntu1.1
Candidate: 3.5.1.dfsg-2.1ubuntu1.1
Version table:
*** 3.5.1.dfsg-2.1ubuntu1.1 500
500 http://gb.archive.ubuntu.com/ubuntu xenial-updates/main amd64
Packages
500 http://security.ubuntu.com/ubuntu xenial-security/main amd64
Packages
100 /var/lib/dpkg/status
3.5.1.dfsg-2.1ubuntu1 500
500 http://gb.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
nagios3-cgi:
Installed: 3.5.1.dfsg-2.1ubuntu1.1
Candidate: 3.5.1.dfsg-2.1ubuntu1.1
Version table:
*** 3.5.1.dfsg-2.1ubuntu1.1 500
500 http://gb.archive.ubuntu.com/ubuntu xenial-updates/main amd64
Packages
500 http://security.ubuntu.com/ubuntu xenial-security/main amd64
Packages
100 /var/lib/dpkg/status
3.5.1.dfsg-2.1ubuntu1 500
500 http://gb.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
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