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Medium security hole in Varnish reverse proxy
From: Tim Brown <timb () nth-dimension org uk>
Date: Mon, 29 Mar 2010 08:49:55 +0100


I've identified a couple of security flaws affecting the Varnish reverse proxy 
which may allow privilege escalation. These issues were reported by email to 
the vendor but he feels that it is a configurational issue rather than a design 
flaw.  Whilst I can partially see his point in that the administrative 
interface can be disabled, I'm not convinced that making a C compiler 
available over a network interface without authentication is sound practice, 
especially when the resultant compiled code can be made to run as root rather 

Tim Brown
<mailto:timb () nth-dimension org uk>

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