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Re: Possibly a stupid question RPC over HTTP
From: S G Masood <sgmasood () yahoo com>
Date: Wed, 13 Oct 2004 15:36:19 -0700 (PDT)


Yeah, it certainly is a security risk in several ways.
Decoding and inspecting HTTPS traffic at the perimeter
before it reaches the server becomes an absolute
necessity if RPC over HTTPS is implemented. Same with
RPC over HTTP.

--
S.G.Masood



--- ASB <abaker () gmail com> wrote:

You need protocol level inspection (i.e. beyond SPI)
if you're going
to monitor that kind of traffic.

Also, the support for RPC over HTTP (should really
be HTTPS) is not as
open ended as you might fear.

Look at the following: 

http://www.google.com/search?q=RPC%20over%20HTTPS%20implement


- ASB
  Cheap, Fast, Secure -- Pick Any TWO.
  http://www.ultratech-llc.com/KB/




On Tue, 12 Oct 2004 12:41:56 -0700, Daniel Sichel
<daniels () ponderosatel com> wrote:
This may just reflect my ignorance, but I read
(and found hard to
believe) that Microsoft has implemented RPC over
HTTP. Is this not a
HUGE security hole? If I understand it correctly
it means that good old
HTML or XML can invoke a process using standard
web traffic (port 80)?
Is there any permission checking done? what things
can be invoked by RPC
over HTTP? Jeeze, to me it looks like the barn
door is now wide open. Am
I right, and if so, how can I detect RPCs in web
traffic to block this
junk? Can ANY stateful packet filter see this
stuff or is the pattern
too broad in allowed RPCs?

Again, I hope this is not a stupid question or
inappropriate format for
this, as somebody else recently said, there is
already enough noise on
this list. I would hate to see this list
degenerate, it has been REALLY
valuable to me as a network engineer on occaison.

Thanks all,
Dan Sichel
Ponderosa telephone
daniels () ponderosatel com

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