How do I find the version of Apache running without access to the command line

Question

I need to either find a file in which the version is encoded or a way of polling it across the web so it reveals its version  The server is running at a host who will not provide me command line access  although I can browse the install location via FTP   I have tried HEAD and do not get a version number reported   If I try a missing page to get a 404 it is intercepted  and a stock page is returned which has no server information on it  I guess that points to the server being hardened   Still no closer     I put a PHP file up as suggested  but I can t browse to it and can t quite figure out the URL path that would load it  In any case I am getting plenty of access denied messages and the same stock 404 page  I am taking some comfort from knowing that the server is quite robustly protected

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Your best option is through PHP   All version requests from the client side cannot be trusted since your Apache could be configured with ServerTokens Prod and ServerSignature Off  See  http   www petefreitag com item 419 cfm

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Warning  some Apache servers do not always send their version number when using HEAD  like in this case   HTTP 1 1 200 OK Date  Fri  03 Oct 2008 13 09 45 GMT Server  Apache X-Powered-By  PHP 5 2 6RC4-pl0-gentoo Set-Cookie  PHPSESSID a97a60f86539b5502ad1109f6759585c  path   Expires  Thu  19 Nov 1981 08 52 00 GMT Cache-Control  no-store  no-cache  must-revalidate  post-check 0  pre-check 0 Pragma  no-cache Connection  close Content-Type  text html    Connection to host lost    If PHP is installed then indeed  just use the php info command    lt  php phpinfo      gt

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The method Connect to port 80 on the host and send it HEAD   HTTP 1 0  This needs to be followed by carriage-return   line-feed twice You ll get back something like this HTTP 1 1 200 OK Date  Fri  03 Oct 2008 12 39 43 GMT Server  Apache 2 2 9  Ubuntu  DAV 2 SVN 1 5 0 PHP 5 2 6-1ubuntu4 with Suhosin-Patch mod perl 2 0 4 Perl v5 10 0 Last-Modified  Thu  02 Aug 2007 20 50 09 GMT ETag   quot 438118-197-436bd96872240 quot  Accept-Ranges  bytes Content-Length  407 Connection  close Content-Type  text html  charset UTF-8  You can then extract the apache version from the Server  header Typical tools you can use You could use the HEAD utility which comes with a full install of Perl s LWP library  e g  HEAD http   your webserver com   Or  use the curl utility  e g   curl --head http   your webserver com   You could also use a browser extension which lets you view server headers  such as Live HTTP Headers or Firebug for Firefox  or Fiddler for IE Stuck with Windows  Finally  if you re on Windows  and have nothing else at your disposal  open a command prompt  Start Menu- gt Run  type  quot cmd quot  and press return   and then type this telnet your webserver com 80  Then type  carefully  your characters won t be echoed back  HEAD   HTTP 1 0  Press return twice and you ll see the server headers  Other methods As mentioned by cfeduke and Veynom  the server may be set to return limited information in the Server  header  Try and upload a PHP script to your host with this in it  lt  php phpinfo     gt   Request the page with a web browser and you should see the Apache version reported there  You could also try and use PHPShell to have a poke around  try a command like  usr sbin apache2 -V

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In the default installation  call a page that doesn t exist and you get an error with the version at the end   Object not found  The requested URL was not found on this server  If you entered the URL manually please check your spelling and try again   If you think this is a server error  please contact the webmaster   Error 404  localhost  10 03 08 14 41 45  Apache 2 2 8  Win32  DAV 2 mod ssl 2 2 8 OpenSSL 0 9 8g mod autoindex color PHP 5 2 5

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Use this PHP script     version   apache get version        echo   version n     Se apache get version

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Simply use something like the following - the string should be there already    lt  php    if isset   SERVER  SERVER SOFTWARE            echo   SERVER  SERVER SOFTWARE           gt

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If they have error pages enabled  you can go to a non-existent page and look at the bottom of the 404 page

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httpd -v will give you the version of Apache running on your server  if you have SSH shell access    The output should be something like this   Server version  Apache 2 2 3 Server built    Oct 20 2011 17 00 12   As has been suggested you can also do apachectl -v which will give you the same output  but will be supported by more flavours of Linux

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The level of version information given out by an Apache server can be configured by the ServerTokens setting in its configuration   I believe there is also a setting that controls whether the version appears in server error pages  although I can t remember what it is off the top of my head  If you don t have direct access to the server  and the server administrator is competent and doesn t want you to know the version they re running    I think you may be SOL

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Telnet to the host at port 80   Type   get   http1 1   enter     enter     It is kind of an HTTP request  but it s not valid so the 500 error it gives you will probably give you the information you want  The blank lines at the end are important otherwise it will just seem to hang

User · Answer

Rarely  a hardened HTTP server is configured to give no server information or misleading server information  In those scenarios if the server has PHP enabled you can add    lt  php phpinfo      gt    in a file and browse to it and look for the   SERVER  SERVER SOFTWARE     entry  This is susceptible to the same hardening lack of information misleading though I would imagine that it s not altered often  because this method first requires access to the machine to create the PHP file

[apache] How do I find the version of Apache running without access to the command line?

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