USN-2523-1: Apache HTTP Server vulnerabilities

Releases

• Ubuntu 14.10
• Ubuntu 14.04 ESM
• Ubuntu 12.04
• Ubuntu 10.04

Packages

• 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

• apache2.2-bin - 2.4.7-1ubuntu4.4

Ubuntu 12.04

• apache2.2-bin - 2.2.22-1ubuntu1.8

Ubuntu 10.04

• apache2.2-bin - 2.2.14-5ubuntu8.15

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

References

• CVE-2013-5704
• CVE-2014-3581
• CVE-2014-3583
• CVE-2014-8109
• CVE-2015-0228