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From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <7f9fa085-7a94-dc6c-a38e-62768795c563@canonical.com>
Subject: [USN-3253-1] Nagios vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-3253-1
April 03, 2017

nagios3 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in Nagios.

Software Description:
- nagios3: host/service/network monitoring and management system

Details:

It was discovered that Nagios incorrectly handled certain long strings. A
remote authenticated attacker could use this issue to cause Nagios to
crash, resulting in a denial of service, or possibly obtain sensitive
information. (CVE-2013-7108, CVE-2013-7205)

It was discovered that Nagios incorrectly handled certain long messages to
cmd.cgi. A remote attacker could possibly use this issue to cause Nagios to
crash, resulting in a denial of service. (CVE-2014-1878)

Dawid Golunski discovered that Nagios incorrectly handled symlinks when
accessing log files. A local attacker could possibly use this issue to
elevate privileges. In the default installation of Ubuntu, this should be
prevented by the Yama link restrictions. (CVE-2016-9566)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.10:
  nagios3-cgi                     3.5.1.dfsg-2.1ubuntu3.1
  nagios3-core                    3.5.1.dfsg-2.1ubuntu3.1

Ubuntu 16.04 LTS:
  nagios3-cgi                     3.5.1.dfsg-2.1ubuntu1.1
  nagios3-core                    3.5.1.dfsg-2.1ubuntu1.1

Ubuntu 14.04 LTS:
  nagios3-cgi                     3.5.1-1ubuntu1.1
  nagios3-core                    3.5.1-1ubuntu1.1

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-3253-1
  CVE-2013-7108, CVE-2013-7205, CVE-2014-1878, CVE-2016-9566

Package Information:
  https://launchpad.net/ubuntu/+source/nagios3/3.5.1.dfsg-2.1ubuntu3.1
  https://launchpad.net/ubuntu/+source/nagios3/3.5.1.dfsg-2.1ubuntu1.1
  https://launchpad.net/ubuntu/+source/nagios3/3.5.1-1ubuntu1.1



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