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Microsoft Office 2003 "mailto:" Automatic Attachment of Arbitrary Files
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Secunia Advisory:
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SA19819
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Release Date:
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2006-04-26
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Last Update:
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2006-04-28
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Popularity:
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22,781 views
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Critical:
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Not critical
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Impact:
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Manipulation of data
Exposure of sensitive information
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | Microsoft Office 2003 Professional Edition
Microsoft Office 2003 Small Business Edition
Microsoft Office 2003 Standard Edition
Microsoft Office 2003 Student and Teacher Edition
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| CVE reference: | CVE-2006-2055
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Description:
Inge Henriksen has discovered a weakness in Microsoft Office 2003, which can be exploited by malicious people to disclose sensitive information.
The weakness is caused due to Microsoft Office Outlook registering an unsafe "mailto" URI handler. This can be exploited to automatically attach an arbitrary file to an e-mail by tricking a user into following a specially crafted link with the "mailto:" URI handler from a malicious web site.
Example:
mailto:[mail]""..\..\..\..\..\[file]
The weakness has been confirmed on a fully patched system with Microsoft Office Outlook 2003 SP1/SP2 and Microsoft Office 2003 Professional Edition. Other versions may also be affected.
Solution:
Validate attachments before sending e-mails after opening links with the "mailto:" URI handler.
Provided and/or discovered by:
Inge Henriksen
Changelog:
2006-04-28: Added CVE reference.
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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