Apache 403 Forbidden on URIs ending in "ps"

By Oblivious-1 on 6 Aug 2007 at 17:28 UTC

I have hit an odd bug. I get the old Apache 403 Forbidden -- You don't have permission to access index.php on this server on all URIs ending in the letter pairing "ps" (e.g., partnerships, pork-chops, world-maps, etc.).

This error occurs with clean URLs enabled and disabled.

It is happening on two seperate installs on the same hosted account, i.e., http://example.com/site1 and http://example.com/site2.

Specs:
------
Drupal 5.2
Apache version 1.3.37 (Unix)
PHP version 4.4.4
MySQL version 4.1.21-standard

Any ideas?

Comments

Addendum

Oblivious-1 commented 6 August 2007 at 17:34

Not unexpectedly, there is nothing showing up in the Drupal logs. The only thing coming up on the Apache logs is

File does not exist: /home/account/public/404.shtml
File does not exist: /home/account/public/favicon.ico
File does not exist: /home/account/public/403.shtml

Sounds like mod_security

styro commented 6 August 2007 at 18:31

whenever seemingly random urls or node contents cause Apache permissions errors, 99% of the time it is an overzealous mod_security config to blame.

BTW: ps is a unix command for listing the running processes on a server. mod_security probably is mistakenly blocking it for that reason.

--
Anton
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Thanks! That sounds like a

Oblivious-1 commented 6 August 2007 at 19:12

Thanks! That sounds like a good lead. I'll look into it tomorrow morning and get back to you all with my findings. I have another site in my charge running fine on the same hosting provider but likely different machines. I am not sure why they would be configd differently, but then I am still getting used to working with hosting providers.