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Bug #17911 users can view other user's web files through apache/php rights
Submitted: 2002-06-21 15:49 UTC Modified: 2002-06-21 16:00 UTC
From: tpalanga at hotmail dot com Assigned:
Status: Not a bug Package: Apache related
PHP Version: 4.1.2 OS: Linux
Private report: No CVE-ID: None
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From: tpalanga at hotmail dot com
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 [2002-06-21 15:49 UTC] tpalanga at hotmail dot com
Suppose we have a dedicated web server with 100 (or more) users. We configure Apache so it will see every user's web files.
 So we have user x and user y, User x cannot see or read the y's web files or other files, but he is smart and somehow finds a mode to break into y's web (especially in the case with /home/y/public_html setting --- every user knows that user xxyy has an public_html in his home dir, so he exploits it). How ? By Apache's rights. Does Apache have the rights to read ALL USERS web files ? YES.
  So x makes a browsing system and he uses Apache's rights to read ALL USERS web files for reading y's web files.  So x reads x's config.php (or anything else) and he finds out the database user and pass. What next ?
  So, I tink it's a bad thing (in fact it's a major security problem) for php and Apache to use general rights for every user. Can Apache be configured as an user-level multi-user-threaded server or this is a SECURITY BUG ?
  I think someone (at least PHP&Apache) cares.
  Best regards
  Tudor Palanga.


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 [2002-06-21 16:00 UTC]
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