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SqWebMail Conditional Comments Script Insertion Vulnerability
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Secunia Advisory:
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SA16704
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Release Date:
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2005-09-06
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Last Update:
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2005-09-26
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Popularity:
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6,609 views
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Critical:
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Moderately critical
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Impact:
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Cross Site Scripting
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | SqWebMail 3.x
SqWebMail 4.x
SqWebMail 5.x
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| CVE reference: | CVE-2005-2820
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Description:
Secunia Research has discovered a vulnerability in SqWebMail, which can be exploited by malicious people to conduct script insertion attacks.
The vulnerability is caused due to SqWebMail allowing usage of e.g. the "<script>" tag within an HTML comment. This, combined with "Conditional Comments" in Internet Explorer, can be exploited to execute arbitrary script code in a user's browser session in context of a vulnerable site when a malicious email is viewed.
Successful exploitation requires that the user is using Internet Explorer.
Example in an HTML email:
<!--[if IE]>
<script>alert("Vulnerable!");</script>
<![endif]-->
The vulnerability has been confirmed in version 5.0.4. Prior version may also be affected.
Solution:
The vendor has issued an updated version of SqWebMail, which fixes this vulnerability.
http://www.courier-mta.org/?download.php
Provided and/or discovered by:
Jakob Balle, Secunia Research.
Changelog:
2005-09-26: Added CVE reference.
Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2005-44/advisory/
Other References:
Information about "Conditional Comments":
http://msdn.microsoft.com/library/def...uthor/dhtml/overview/ccomment_ovw.asp
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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