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Posted to bugs@httpd.apache.org by bu...@apache.org on 2006/07/12 17:32:31 UTC
DO NOT REPLY [Bug 40029] - mod_proxy should interoperate with RPC over HTTP
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http://issues.apache.org/bugzilla/show_bug.cgi?id=40029
rpluem@apache.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |INVALID
------- Additional Comments From rpluem@apache.org 2006-07-12 15:32 -------
(In reply to comment #0)
> ssldump on the Apache 2.2.2 machine shows that the RPC_OUT_DATA is correctly
> forwarded to the Exchange server. For the RPC_IN_DATA, OTOH, the proxy doesn't
> even open a connection to the Exchange server. I can only guess that's it's
> trying to read (prefetch?) a part or all of the 1073741824 bytes
> (Content-Length) before opening the session to the Exchange server.
Correct, we prefetch the whole body to avoid HTTP smuggling attacks with invalid
Content-Length headers. This is a security fix in 2.2.x and >= 2.0.55. (see
http://httpd.apache.org/security/vulnerabilities_20.html and
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2088). Correct me if I am
wrong but I do not think that RPC_IN_DATA and RPC_OUT_DATA are specfied in any RFC.
>
> Unfortunately, the client only sends a small request (~ 100 bytes) on the IN
> connection and starts waiting for a response on the OUT connection. It never
> gets one, though, since the request hasn't reached the Exchange server yet.
This is an incorrect use of the http protocol. Bad luck for Microsoft.
So I do not see any chance that we can do anything here. => Invalid
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