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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.0641
                         libevent vulnerabilities
                               14 March 2017

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           libevent-2.0-5
Publisher:         Ubuntu
Operating System:  Ubuntu
                   UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-10197 CVE-2016-10196 CVE-2016-10195

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3228-1

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running libevent-2.0-5 check for an updated version of the software
         for their operating system.

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==========================================================================
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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===========================================================================
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The University of Queensland
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===========================================================================
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