Michal Zalewski wrote:
On Sat, 3 Feb 2007, Michal Zalewski wrote:
xmlhttp.open("GET\thttp://dione.ids.pl/\tHTTP/1.0\n\n";, "x",true);
Funny enough, Paul Szabo was quick to point out that Amit Klein found the
same vector that I used here for client-side backdoors in May 2006 (still
not patched?! *shrieks in horror*), but for cache poisoning:
"IE + some popular forward proxy servers = XSS, defacement (browser cache poisoning)"
http://www.securityfocus.com/archive/1/434931
This is getting depressing. May 2006.
Much worse. The basic technique already appeared in two of my previous
write-ups:
"Exploiting the XmlHttpRequest object in IE - Referrer spoofing, and a
lot more..." (September 2005)
http://www.securityfocus.com/archive/1/411585
"XS(T) attack variants which can, in some cases, eliminate the need for
TRACE </archive/107/308433/30/0/threaded>" (January 2003)
http://www.securityfocus.com/archive/107/308433
The 2005 text does briefly mention "Accessing content / web-scanning"
(take a look at Notes 1-3).
So the problem is much older.
Thanks,
-Amit
