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[USN-3228-1] libevent vulnerabilities

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[USN-3228-1] libevent vulnerabilities

Marc Deslauriers-3
==========================================================================
Ubuntu Security Notice USN-3228-1
March 13, 2017

libevent vulnerabilities
==========================================================================

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

- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in libevent.

Software Description:
- libevent: Asynchronous event notification library

Details:

Guido Vranken discovered that libevent incorrectly handled memory when
processing certain data. A remote attacker could possibly use this issue
with an application that uses libevent to cause a denial of service, or
possibly execute arbitrary code.

Update instructions:

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

Ubuntu 16.10:
  libevent-2.0-5                  2.0.21-stable-2ubuntu0.16.10.1

Ubuntu 16.04 LTS:
  libevent-2.0-5                  2.0.21-stable-2ubuntu0.16.04.1

Ubuntu 14.04 LTS:
  libevent-2.0-5                  2.0.21-stable-1ubuntu1.14.04.2

Ubuntu 12.04 LTS:
  libevent-2.0-5                  2.0.16-stable-1ubuntu0.2

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

References:
  http://www.ubuntu.com/usn/usn-3228-1
  CVE-2016-10195, CVE-2016-10196, CVE-2016-10197

Package Information:
  https://launchpad.net/ubuntu/+source/libevent/2.0.21-stable-2ubuntu0.16.10.1
  https://launchpad.net/ubuntu/+source/libevent/2.0.21-stable-2ubuntu0.16.04.1
  https://launchpad.net/ubuntu/+source/libevent/2.0.21-stable-1ubuntu1.14.04.2
  https://launchpad.net/ubuntu/+source/libevent/2.0.16-stable-1ubuntu0.2



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