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Date: Thu May 19 07:02:52 2005 From: raoul at elforsoft.com (Raoul Nakhmanson-Kulish) Subject: Security issue in Microsoft Outlook Hello, Bakchodiya! On 19.05.2005 0:27 you wrote: > Lets compose an email in MS Outlook, lets type > http://www.cybertrion.com & put a space after it to > make it a link. Now put your cursor just before > cybertrion & type any URL for eg: > http://www.foo-labs.info now send it to anyone. The > receiver will see the URL as http://www.foo-labs.info > but when he clicks on it it will directly take him to > http://www.cybertrion.com > I am not sure how critical this is but it can fool > alot of people & result in download of a virus. This "bug" is a standard feature of HTML (including, of course, HTML messages): you may specify any URL in <a href="..."> regardless of link text. This is a wide-spreaded trick for phishing, and you haven't discovered the America ;) But at the same time Outlook (prior to 2003) really is more vulnerable than some other mail clients because it doesn't show a real link URL to user. Outlook 2003 shows an URL as a tooltip but after short delay, and some impatient users may be phished. I prefer to use Mozilla Mail/Thunderbird, it shows a real URL in status bar instantly and moreover has a phishing detection algorithm (Mozilla bug #279191). Especially I like a "View -> Message body as -> Simple HTML" feature which removes any little bit danger HTML tags and attributes from message before showing it but saves hypertext logical formatting. -- Regards, Raoul Nakhmanson-Kulish, Elfor Soft Ltd., IT Department
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