This version of Apache is the 3rd GA release of the new generation 2.4.x branch of Apache HTTPD and represents fifteen years of innovation by the project, and is recommended over all previous releases.
This version of Apache is principally a security and bug fix release, including the following 2 security fixes:
SECURITY: CVE-2012-3502 mod_proxy_ajp, mod_proxy_http: Fix an issue in back end connection closing which could lead to privacy issues due to a response mixup. PR 53727.
SECURITY: CVE-2012-2687 mod_negotiation: Escape filenames in variant list to prevent a possible XSS for a site where untrusted users can upload files to a location with MultiViews enabled.
This release requires the Apache Portable Runtime (APR) version 1.4.x and APR-Util version 1.4.x. The APR libraries must be upgraded for all features of httpd to operate correctly.
Windows users: The known issue with AcceptFilter None replacing Win32DisableAcceptEx has been resolved with version 2.4.3, making Apache httpd 2.4.x suitable for Windows servers.