[USN-3425-2] Apache HTTP Server vulnerability

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-3425-2
October 24, 2017

apache2 vulnerability
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

Apache HTTP Server could be made to expose sensitive information over
the network.

Software Description:
- apache2: Apache HTTP server

Details:

USN-3425-1 fixed a vulnerability in Apache HTTP Server. This update
provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 Hanno Böck discovered that the Apache HTTP Server incorrectly handled
 Limit directives in .htaccess files. In certain configurations, a
 remote attacker could possibly use this issue to read arbitrary server
 memory, including sensitive information. This issue is known as
 Optionsbleed.

Update instructions:

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

Ubuntu 12.04 ESM:
  apache2.2-bin                   2.2.22-1ubuntu1.14

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

References:
  https://www.ubuntu.com/usn/usn-3425-2
  https://www.ubuntu.com/usn/usn-3425-1
  CVE-2017-9798
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