=========================================================================Ubuntu Security Notice USN-3340-1
June 26, 2017

apache2 vulnerabilities
=========================================================================
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:

Several security issues were fixed in Apache HTTP Server.

Software Description:
- apache2: Apache HTTP server

Details:

Emmanuel Dreyfus discovered that third-party modules using the
ap_get_basic_auth_pw() function outside of the authentication phase may
lead to authentication requirements being bypassed. This update adds a new
ap_get_basic_auth_components() function for use by third-party modules.
(CVE-2017-3167)

Vasileios Panopoulos discovered that the Apache mod_ssl module may crash
when third-party modules call ap_hook_process_connection() during an HTTP
request to an HTTPS port. (CVE-2017-3169)

Javier Jiménez discovered that the Apache HTTP Server incorrectly handled
parsing certain requests. A remote attacker could possibly use this issue
to cause the Apache HTTP Server to crash, resulting in a denial of service.
(CVE-2017-7668)

ChenQin and Hanno Böck discovered that the Apache mod_mime module
incorrectly handled certain Content-Type response headers. A remote
attacker could possibly use this issue to cause the Apache HTTP Server to
crash, resulting in a denial of service. (CVE-2017-7679)

Update instructions:

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

Ubuntu 17.04:
  apache2-bin                     2.4.25-3ubuntu2.1

Ubuntu 16.10:
  apache2-bin                     2.4.18-2ubuntu4.2

Ubuntu 16.04 LTS:
  apache2-bin                     2.4.18-2ubuntu3.3

Ubuntu 14.04 LTS:
  apache2-bin                     2.4.7-1ubuntu4.16

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

References:
  https://ubuntu.com/security/notices/USN-3340-1
  CVE-2017-3167, CVE-2017-3169, CVE-2017-7668, CVE-2017-7679

Package Information:
  https://launchpad.net/ubuntu/+source/apache2/2.4.25-3ubuntu2.1
  https://launchpad.net/ubuntu/+source/apache2/2.4.18-2ubuntu4.2
  https://launchpad.net/ubuntu/+source/apache2/2.4.18-2ubuntu3.3
  https://launchpad.net/ubuntu/+source/apache2/2.4.7-1ubuntu4.16