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Vigil@nce: Office, OneNote 2007, code execution

September 2008 by Vigil@nce

SYNTHESIS

Two vulnerabilities can be used by an attacker to execute code
when the victim clicks on a OneNote uri.

Gravity: 3/4

Consequences: user access/rights

Provenance: internet server

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)

Number of vulnerabilities in this bulletin: 2

Creation date: 10/09/2008

Identifier: VIGILANCE-VUL-8100

IMPACTED PRODUCTS

 Microsoft Access [confidential versions]
 Microsoft Excel [confidential versions]
 Microsoft Outlook [confidential versions]
 Microsoft PowerPoint [confidential versions]
 Microsoft Publisher [confidential versions]
 Microsoft Visio [confidential versions]
 Microsoft Word [confidential versions]

DESCRIPTION

When the Microsoft Office OneNote product is installed, the user
can click on "onenote://" uris to access to his notes. Two
vulnerabilities can be exploited via OneNote.

An attacker can create a malicious OneNote uri to force the
transfer of a file when the user clicks on this uri. An attacker
can therefore create a file on victim’s computer, or read a file.
By creating a file in the startup directory, the attacker can
execute code. This vulnerability impacts OneNote 2007. [grav:3/4;
ISVA-080910.1]

OneNote uris are handled by the MSO.DLL library. However, one of
its methods does not correctly check the uri size, which generates
a buffer overflow. The vulnerable MSO.DLL library is installed in
all Office versions, even if OneNote is not installed. However,
this vulnerability of MSO.DLL can only be exploited via OneNote.
[grav:3/4]

Both vulnerabilities lead to code execution when the victim clicks
on a OneNote uri.

CHARACTERISTICS

Identifiers: 955047, BID-31067, CVE-2008-3007, ISVA-080910.1,
MS08-055, VIGILANCE-VUL-8100

https://vigilance.aql.fr/tree/1/8100


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