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Ubuntu Security Notice USN-3253-2

Ubuntu Security Notice USN-3253-2
Posted Jun 7, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3253-2 - USN-3253-1 fixed vulnerabilities in Nagios. The update prevented log files from being displayed in the web interface. This update fixes the problem. 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. 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. 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. Various other issues were also addressed.

tags | advisory, remote, web, denial of service, local, cgi, vulnerability
systems | linux, ubuntu
advisories | CVE-2014-1878, CVE-2016-9566
MD5 | 04f7a17df00f437de002a52271d94331

Ubuntu Security Notice USN-3253-2

Change Mirror Download

===========================================================================
Ubuntu Security Notice USN-3253-2
June 07, 2017

nagios3 regression
===========================================================================

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

- Ubuntu 17.04
- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

USN-3253-1 introduced a regression in Nagios.

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

Details:

USN-3253-1 fixed vulnerabilities in Nagios. The update prevented log files
from being displayed in the web interface. This update fixes the problem.

We apologize for the inconvenience.

Original advisory 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 17.04:
nagios3-cgi 3.5.1.dfsg-2.1ubuntu5.2
nagios3-core 3.5.1.dfsg-2.1ubuntu5.2

Ubuntu 16.10:
nagios3-cgi 3.5.1.dfsg-2.1ubuntu3.3
nagios3-core 3.5.1.dfsg-2.1ubuntu3.3

Ubuntu 16.04 LTS:
nagios3-cgi 3.5.1.dfsg-2.1ubuntu1.3
nagios3-core 3.5.1.dfsg-2.1ubuntu1.3

Ubuntu 14.04 LTS:
nagios3-cgi 3.5.1-1ubuntu1.3
nagios3-core 3.5.1-1ubuntu1.3

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

References:
https://www.ubuntu.com/usn/usn-3253-2
https://www.ubuntu.com/usn/usn-3253-1
https://launchpad.net/bugs/1690380

Package Information:
https://launchpad.net/ubuntu/+source/nagios3/3.5.1.dfsg-2.1ubuntu5.2
https://launchpad.net/ubuntu/+source/nagios3/3.5.1.dfsg-2.1ubuntu3.3
https://launchpad.net/ubuntu/+source/nagios3/3.5.1.dfsg-2.1ubuntu1.3
https://launchpad.net/ubuntu/+source/nagios3/3.5.1-1ubuntu1.3



--tBnGudiknfNusXNDKeFViqOc38en0Ra03--

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