mailing list archives
Re: Possibly a stupid question RPC over HTTP
From: Rodrigo Barbosa <rodrigob () suespammers org>
Date: Wed, 13 Oct 2004 17:04:52 -0300
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This is called, in my experience, XML-RPC (google search with lots
of results). Reference: http://www.xmlrpc.com/spec
Yes, it is a Remote Procedure Calling implementation. No, it is not
the same things that the good old udp based RPC used for things
like NIS and NFS. References: RFC 1057 and RFC 1831.
That can be the source of confusion. Akin names.
On Wed, Oct 13, 2004 at 11:37:12AM -0400, Daniel H. Renner wrote:
Could you please point out where you read this data? I would like to
see this one...
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.
Rodrigo Barbosa <rodrigob () suespammers org>
"Quid quid Latine dictum sit, altum viditur"
"Be excellent to each other ..." - Bill & Ted (Wyld Stallyns)
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- Re: Possibly a stupid question RPC over HTTP, (continued)