This update for apache2 fixes the following issues:
Security issues fixed:
CVE-2016-8743: Fixed liberal whitespace interpretation accepted from requests
and sent in response lines and headers. Accepting these different behaviors
represented a security concern when httpd participates in any chain of
proxies or interacts with back-end application servers, either through
mod_proxy or using conventional CGI mechanisms, and may result in request
smuggling, response splitting and cache pollution. (bsc#1016715)
CVE-2016-4975: Fixed possible CRLF injection allowing HTTP response splitting
attacks for sites which use mod_userdir. This issue was mitigated by changes
which prohibit CR or LF injection into the 'Location' or other outbound
header key or value. (bsc#1104826)