The remote host appears to be running a version of Apache 2.x which is older than 2.0.45
This version is vulnerable to various flaws :
- There is a denial of service attack which may allow an attacker to disable this server remotely
- The httpd process leaks file descriptors to child processes, such as CGI scripts. An attacker who has the ability to execute arbitrary CGI scripts on this server (including PHP code) would be able to write arbitrary data in the file pointed to (in particular, the log files)