Re: apache + .htpasswd - bypass pwd check

[Jedi/Sector One <j () pureftpd org>]

On Thu, Apr 25, 2002 at 12:19:45PM -0400, Jose Nazario wrote:
> summary:
>       Options -FollowSymLinks +SymLinksIfOwnerMatch or something similar

  Please note that it is safe only if all scripts (PHP, perl, etc) are
running with user privileges.

  If the suexec wrapped isn't active, or if PHP doesn't run in CGI mode,
files created by scripts will be owned by the server uid (usually nobody) .

  There are plenty of free PHP and Perl scripts that are coming with an
"installer". People upload a package to the server, browse an URL to launch
the installation script, answer a few questions, and files are automatically
copied into proper locations. These files typically contain passwords for
SQL databases, and once copied by the installation script, they belong to
nobody.

  +SymlinksIfOwnerMatch doesn't prevent users from creating a script that
will create a symbolic link to some other customer's files as nobody. Owners
will match.

  All symbolic links can be forbidden (-FollowSymlinks and nothing else) .
  
  But hard links are worse. Apache will follow them regardless of your
configuration files. As a lot of customers are using the same packages, it's
quite easy to find out what files have to be linked.

  So, to sleep more quietly :
  
 - Use suexec.
 
 - Use PHP safe_mode if you really can't run PHP in CGI mode.
 
 - Place users home directories in unguessable locations
(/users/B67h6768/9dqzsu_-zeu/_6p+/john/ , with all directories no read
attribute on directories) .

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