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Ubuntu Security Notice USN-2523-1
March 10, 2015

apache2 vulnerabilities
============================================================================

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

- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in the Apache HTTP Server.

Software Description:
- apache2: Apache HTTP server

Details:

Martin Holst Swende discovered that the mod_headers module allowed HTTP
trailers to replace HTTP headers during request processing. A remote
attacker could possibly use this issue to bypass RequestHeaders directives.
(CVE-2013-5704)

Mark Montague discovered that the mod_cache module incorrectly handled
empty HTTP Content-Type headers. A remote attacker could use this issue to
cause the server to stop responding, leading to a denial of service. This
issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2014-3581)

Teguh P. Alko discovered that the mod_proxy_fcgi module incorrectly
handled long response headers. A remote attacker could use this issue to
cause the server to stop responding, leading to a denial of service. This
issue only affected Ubuntu 14.10. (CVE-2014-3583)

It was discovered that the mod_lua module incorrectly handled different
arguments within different contexts. A remote attacker could possibly use
this issue to bypass intended access restrictions. This issue only affected
Ubuntu 14.10. (CVE-2014-8109)

Guido Vranken discovered that the mod_lua module incorrectly handled a
specially crafted websocket PING in certain circumstances. A remote
attacker could possibly use this issue to cause the server to stop
responding, leading to a denial of service. This issue only affected
Ubuntu 14.10. (CVE-2015-0228)

Update instructions:

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

Ubuntu 14.10:
  apache2.2-bin                   2.4.10-1ubuntu1.1

Ubuntu 14.04 LTS:
  apache2.2-bin                   2.4.7-1ubuntu4.4

Ubuntu 12.04 LTS:
  apache2.2-bin                   2.2.22-1ubuntu1.8

Ubuntu 10.04 LTS:
  apache2.2-bin                   2.2.14-5ubuntu8.15

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

References:
  http://www.ubuntu.com/usn/usn-2523-1
  CVE-2013-5704, CVE-2014-3581, CVE-2014-3583, CVE-2014-8109,
  CVE-2015-0228

Package Information:
  https://launchpad.net/ubuntu/+source/apache2/2.4.10-1ubuntu1.1
  https://launchpad.net/ubuntu/+source/apache2/2.4.7-1ubuntu4.4
  https://launchpad.net/ubuntu/+source/apache2/2.2.22-1ubuntu1.8
  https://launchpad.net/ubuntu/+source/apache2/2.2.14-5ubuntu8.15