[VulnWatch] TEXT/PLAIN: ALERT("OUTLOOK EXPRESS")

http-equiv_at_excite.com
Date: 07/25/03

  • Next message: Peter Winter-Smith: "[VulnWatch] Buffer Overflow in EF Commander 3.54" 
    To: <vulnwatch@vulnwatch.org>
Date: Fri, 25 Jul 2003 17:12:33 -0000

    Friday, July 25, 2003

    Active Scripting and HTML in a plain text mail message:

    MIME-Version: 1.0
    Content-Type: text/plain;
    Content-Transfer-Encoding: 7bit
    X-Source: 25.07.03 http://www.malware.com

    <img dynsrc=javascript:alert()><font color=red>foo

    The above is a legitimate RFC822 mail message in plain text.
    Ordinarily one would require an html mail message [Content-Type:
    text/html;] to parse html and scripting. The above functions under a
    plain text mail message in Outlook Express 6.00 and Outlook Express
    5.5 [perhaps others]. Outlook Exprss 6 has restricted zone as default
    as well as an option to read messages in plain text [use it !]. Other
    versions do not.

    This was definitely fixed way back when:

    [see: http://www.securityfocus.com/bid/3334 ].

    It can be of interest to admins who filter based on content type at
    the gateway, as well as newsgroup operators who do the same [less so
    as comprehensive].

    Notes:

    1. We're working on html in the 'plain text' zone of OE6 next.
    2. None.

    End Call 

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