TITLE:
Horde IMP Attachments Script Insertion Vulnerability

SECUNIA ADVISORY ID:
SA17910

VERIFY ADVISORY:
http://secunia.com/advisories/17910/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
IMP Webmail Client 4.x
http://secunia.com/product/6376/

DESCRIPTION:
Igor has reported a vulnerability in Horde IMP, which can be
exploited by malicious people to conduct script insertion attacks.

Input passed in mail attachments is not properly sanitised before
being viewed. This can be exploited to inject arbitrary HTML and
script code, which will be executed in a user's browser session in
context of an affected site when the malicious attachment is viewed
with the Microsoft Internet Explorer browser.

Examples:
* Including a NULL byte in a HTML tag.
* Including HTML and script code in an image.
* UTF-16 encoded attachments.

SOLUTION:
Do not open attachments originating from untrusted sources.

PROVIDED AND/OR DISCOVERED BY:
Igor

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