nicht angemeldet
Hi ihr,
Ich will hier nochmal ein bisschen lästig sein, um Werbung für die hervorragende Arbeit für Guninski zu machen. Wer sich tatsächlich für Sicherheit auf Windows interessiert, kann sich hier in die Mailing-Liste eintragen.
--> www.guninski.com/mailinglist.html
Vielleicht sollte ich die letzte mail vom 01. Jan. 2002 einfach unverändert hierrein posten, damit alle sehen, wie einfach es geht:
Georgi Guninski security advisory #52, 2001
IE GetObject() problems
Systems affected:
Patched IE 6.0, somewhat patched 5.5 Win2K
Risk: High
Date: 1 January 2002
Legal Notice:
This Advisory is Copyright (c) 2001 Georgi Guninski.
You may distribute it unmodified.
You may not modify it and distribute it or distribute parts
of it without the author's written permission.
Disclaimer:
The information in this advisory is believed to be true based on
experiments though it may be false.
The opinions expressed in this advisory and program are my own and
not of any company. The usual standard disclaimer applies,
especially the fact that Georgi Guninski is not liable for any damages
caused by direct or indirect use of the information or functionality
provided by this advisory or program. Georgi Guninski bears no
responsibility for content or misuse of this advisory or program or
any derivatives thereof.
Description:
IE allows reading local files due to a bug in GetObject().
Reading local files may lead to executing arbitrary programs.
Details:
GetObject() has a bad security record -
check http://www.guninski.com/browsers.html
The new bug is quite similar to:
http://www.guninski.com/getobject1-desc.html
the difference being:
----------------------
a=GetObject("http://"+location.host+"/../../../../../../test.txt","htmlfile");
----------------------
It is funny that directory traversal on a http: URL leads to reading local files.
Workaround/Solution:
Disable Active Scripting and never turn it on.
Better, do not use IE in hostile environments such as the internet.
Vendor status:
Microsoft was notified on 11 December 2001.
They had 3 weeks to produce a patch but didn't.
Regards,
Georgi Guninski
http://www.guninski.com
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You may visit Guninski Security Mailing List page at
http://www.guninski.com/mailinglist.html
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Aber: Ich weiß, ich weiß: juckt im Grunde keinen. Da muß erst mehr passieren.
Ciao
Wolfgang Pichler