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Re: problems with SQUID 3.x and IBM Proventia

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Amos Jeffries wrote:
So of course the problem is proventia corrupting the HTTP headers and we will raise an issue about that with IBM.

But for the time being: is there a chance to make squid more "tolerant" about those kind of problems? Without surprize I did not find any fitting config options :-)

Not nearly as easy as it will be for IBM to issue a fix for it. Or even to replace the box with free software that works well.

Hehe, sure, no objections, it is just the world being far from perfect :-)

Not also without opening some potential data-injection and cache poisoning flaws into Squid.

Consider what happens with:

HTTP/1.1 200 OK
Bwahaha: "
Cache-Control: private

...something you really did not want public...
.

vs:

HTTP/1.1 200 OK
Content-Type: "fu
bar: tender: and: wine"
Cache-Control: private

Hmm, reading the specs for HTTP message headers [1] I think this could be done without imposing security issues. As per specification your last example would read correctly:

-------CUT-------
HTTP/1.1 200 OK
Content-Type: "fu
 bar: tender: and: wine"
Cache-Control: private
-------CUT-------

note the leading whitespace.

[1] http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2

--
Udo Rader, CTO
http://www.bestsolution.at
http://riaschissl.blogspot.com

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