Re: Is there user Anna at your host ?

From: Bill Munger (bmungerat_private)
Date: Thu Sep 13 2001 - 10:32:59 PDT

  • Next message: Ram'on Reyes Carri'on: "Re: Is there user Anna at your host ?"

    The usefulness of this method is very limited. The numeric response code 
    (200, 403, 404, 500 etc) that apache sends along with a custom error page 
    remains unchanged. Even if your document says something generic (or even 
    false), apache is still being quite specific (and truthful) about the 
    problem it is reporting. Anyone doing a brute scan will likely pay more 
    attention to the numeric code than to anything in the document body.
    
    This might fool a curious punk who is typing things in the location bar of 
    his mainstream browser, but it is basically useless against any attack more 
    sophisticated (i.e. automated) than that. Protection that is so trivially 
    circumvented is perhaps worse than none at all, as it can lead one to let 
    down his guard (c.f. trusting HTTP_REFERER for resource authorization).
    
    Not to mention the obvious problem of hiding useful trouble-shooting 
    information from legitemate users/developers/administrators, etc. The 
    apache 'ErrorDocument' directive can make your site prettier and more user 
    friendly, but will not do much to increase security.
    
    Mariusz Woloszyn <emsiat_private> wrote:
    
    > You can allways change error files in apache conf:
    > 
    > ErrorDocument 404 /error/blah.html
    > ErrorDocument 403 /error/blah.html
    > 
    > 
    > --
    > Mariusz Wołoszyn
    > Internet Security Specialist, Internet Partners
    



    This archive was generated by hypermail 2b30 : Thu Sep 13 2001 - 10:46:51 PDT