Full Disclosure mailing list archives
RE: Possibly a stupid question RPC over HTTP
From: "Burnes, James" <james.burnes () gwl com>
Date: Thu, 14 Oct 2004 10:42:01 -0600
Welcome the wonderful wide world of "web services". The gleeful tunneling through https and http of non REST information. This has been an issue for, how many years now? Get yourself a SOAP/XML sniffer. I believe one of the XML firewall suppliers gives this out for free. jb -----Original Message----- From: full-disclosure-admin () lists netsys com [mailto:full-disclosure-admin () lists netsys com] On Behalf Of ASB Sent: Wednesday, October 13, 2004 2:45 PM To: full-disclosure () lists netsys com Subject: Re: [Full-disclosure] Possibly a stupid question RPC over HTTP 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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Current thread:
- Re: Possibly a stupid question RPC over HTTP, (continued)
- Re: Possibly a stupid question RPC over HTTP Shannon Johnston (Oct 13)
- Re: Possibly a stupid question RPC over HTTP Byron L. Sonne (Oct 14)
- Re: Possibly a stupid question RPC over HTTP Maxime Ducharme (Oct 13)
- Re: Possibly a stupid question RPC over HTTP Rodrigo Barbosa (Oct 13)
- RE: Possibly a stupid question RPC over HTTP winter (Oct 14)
- Re: Possibly a stupid question RPC over HTTP Ron DuFresne (Oct 13)
- Re: Possibly a stupid question RPC over HTTP Shannon Johnston (Oct 13)
- Re: Possibly a stupid question RPC over HTTP Matthew Farrenkopf (Oct 13)
- RE: Possibly a stupid question RPC over HTTP Todd Towles (Oct 13)
- Re: Possibly a stupid question RPC over HTTP S G Masood (Oct 14)
- Re: Possibly a stupid question RPC over HTTP Roberto Gomez BolaƱos (Oct 14)
- RE: Possibly a stupid question RPC over HTTP Burnes, James (Oct 14)
- RE: Possibly a stupid question RPC over HTTP Daniel Sichel (Oct 15)
- RE: Possibly a stupid question RPC over HTTP Airey, John (Oct 21)
- Re: Possibly a stupid question RPC over HTTP Kyle Maxwell (Oct 21)
- RE: Possibly a stupid question RPC over HTTP Airey, John (Oct 22)
- Re: Possibly a stupid question RPC over HTTP Andrew Farmer (Oct 22)
- Re: Possibly a stupid question RPC over HTTP Kyle Maxwell (Oct 24)
- RE: Possibly a stupid question RPC over HTTP Airey, John (Oct 26)
- Re: Possibly a stupid question RPC over HTTP Kevin (Oct 26)