full-disclosure - Possible apache2/php 4.3.9 worm

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From: aschultz at echo-inc.com (Alex Schultz)
Subject: Possible apache2/php 4.3.9 worm

Some of the sites I administer were alledgedly hit by a worm last night.
It overwrote all .php/.html files that were owner writable and owned by
apache.  The worm put the following html in place of what was there:
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> 
 <HTML>
 <HEAD> 
 <TITLE>This site is defaced!!!</TITLE> 
 </HEAD>
<BODY bgcolor="#000000" text="#FF0000"> 
<H1>This site is defaced!!!</H1> 
<HR> 
<ADDRESS><b>NeverEverNoSanity WebWorm generation 17.</b></ADDRESS> 
</BODY>
</HTML>

We were running apache 2.0.52 and php 4.3.9. Have any of you encounted
this before?  Also is there anything I should be aware of such as a
possible binary that may have been dropped?  Could this have been
accomplised by the upload path traversal vulnerability?  Google returns
nothing.

Thanks
-Alex Schultz