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Vigil@nce: Office XP, Cross Site Scripting of CDO

October 2008 by Vigil@nce

SYNTHESIS

An attacker can create a web document containing a cdo: uri in
order to generate a Cross Site Scripting in Office XP.

Gravity: 2/4

Consequences: client access/rights

Provenance: document

Means of attack: no proof of concept, no attack

Ability of attacker: expert (4/4)

Confidence: confirmed by the editor (5/5)

Diffusion of the vulnerable configuration: high (3/3)

Creation date: 15/10/2008

IMPACTED PRODUCTS

 Microsoft Access
 Microsoft Excel
 Microsoft Outlook
 Microsoft PowerPoint
 Microsoft Publisher
 Microsoft Visio
 Microsoft Word

DESCRIPTION

When a web page returns a "Content-Disposition: attachment"
header, a dialog box is opened to ask user what to do with the
file.

Office XP enables "cdo:" uris, but their content is always
displayed without asking the user. This creates a Cross Site
Scripting.

An attacker can therefore create a web document containing a cdo:
uri in order to generate a Cross Site Scripting in Office XP.

CHARACTERISTICS

Identifiers: 957699, BID-31693, CVE-2008-4020, MS08-056,
VIGILANCE-VUL-8169

http://vigilance.aql.fr/vulnerability/8169


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