[wpmu-trac] [WordPress MU Trac] #1183: Invalid feed URL in RSS widget causes Apache crash on Windows 2003

WordPress MU Trac wpmu-trac at lists.automattic.com
Thu Dec 17 22:47:16 UTC 2009


#1183: Invalid feed URL in RSS widget causes Apache crash on Windows 2003
--------------------------+-------------------------------------------------
 Reporter:  LanceGrigsby  |       Owner:  somebody                   
     Type:  defect        |      Status:  new                        
 Priority:  high          |   Milestone:  2.8.6                      
Component:  component1    |     Version:  2.8.6                      
 Severity:  major         |    Keywords:  Apache, RSS, URL validation
--------------------------+-------------------------------------------------
 If a user in a WordPress MU installation mistakenly uses his or her base
 blog URL as the feed address in an RSS widget without appending ../feed/,
 an infinite loop is created when clients request the URL over the net--the
 result is that Apache monopolizes all CPU memory, causing a web server
 crash. This occurs on Windows 2003 servers running Apache 2.2. The fact
 that this is possible highlights a potential weakness in the way the WPMU
 core validates its feed URLs.

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Ticket URL: <http://trac.mu.wordpress.org/ticket/1183>
WordPress MU Trac <http://mu.wordpress.org/>
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