HTTP Anti-Virus Proxy
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HAVP and Nessus
http://havp.hege.li/forum/viewtopic.php?f=3&t=317
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Author:  pchamorro2005 [ 12 Dec 2007 17:29 ]
Post subject:  HAVP and Nessus

In scanning the proxy server where I have HAVP installed using Nessus, I'm getting this vulnerability:

"Usable remote proxy on any port

The proxy, allows everyone to perform requests
against arbitrary ports, like ...
(more lines)

Solution: reconfigure your proxy so that it only accepts
connections against non-dangerous ports (> 1024).

Risk factor : High

Nessus ID : 10193"

Is this vulnerability real? What solution could you suggest me to solve this issue? Only with the Nessus 3 client the warning appears, nessuswx-1.4.5 (not longer developed) doesn't shows the alert (the server is (Nessus) 3.0.5. [build 258] for Linux).

Thank you,

Pablo Chamorro

(http://www.nessus.org/plugins/index.php ... e&id=10193)

Author:  hege [ 12 Dec 2007 17:54 ]
Post subject: 

It's true that HAVP currently allows requests to any port. I might as well add some sanity checks or config to limit it.

But it's not really that dangerous, all you can do is send "GET http://xxxxx/" requests somewhere.

In the recommended configuration with Squid in front of HAVP, there is no problem since the checks are in Squid by default.

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