5 - USN-2523-1

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