CVE-2014-0117

El módulo mod_proxy en Apache HTTP Server 2.4.x anterior a 2.4.10, cuando un proxy inverso está habilitado, permite a atacantes remotos causar una denegación de servicio (caída del proceso hijo) a través de una cabecera de conexión HTTP manipulada.

A denial of service flaw was found in the mod_proxy httpd module. A remote attacker could send a specially crafted request to a server configured as a reverse proxy using a threaded Multi-Processing Modules (MPM) that would cause the httpd child process to crash.

This vulnerability allows remote attackers to cause a denial of service condition on vulnerable installations of Apache HTTP Server. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the mod_proxy module. The issue lies in the processing of HTTP headers when an invalid request is made. An attacker can leverage this flaw to crash a remote instance of Apache HTTP server.

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. A race condition flaw, leading to heap-based buffer overflows, was found in the mod_status httpd module. A remote attacker able to access a status page served by mod_status on a server using a threaded Multi-Processing Module could send a specially crafted request that would cause the httpd child process to crash or, possibly, allow the attacker to execute arbitrary code with the privileges of the "apache" user. A NULL pointer dereference flaw was found in the mod_cache httpd module. A malicious HTTP server could cause the httpd child process to crash when the Apache HTTP Server was used as a forward proxy with caching.