SYMSA-2006-001: Buffer overflow in Microsoft Office 2000, Office XP (2002), and Office 2003 Routing Slip Metadata Mar 14 2006 07:30PM
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Security Advisory

Advisory ID : SYMSA-2006-001

Advisory Name: Buffer overflow in Microsoft Office 2000, Office XP

(2002), and Office 2003 Routing Slip Metadata.

Release Date : 03-14-2006

Application : Microsoft Word, Microsoft Excel, Microsoft PowerPoint,

Microsoft Outlook

Platform : Windows

Severity : Remotely exploitable / User access

Author : Ollie Whitehouse / ollie_whitehouse (at) symantec (dot) com [email concealed]

Vendor Status: Duplicated and verified by Microsoft, patch available.

CVE Number : CVE-2006-0009

Reference : http://www.securityfocus.com/bid/17000


There exists a buffer overflow in Microsoft Word, Excel,

PowerPoint, and Outlook in the parsing of the routing slip

metadata. The result is that when a user closes a malicious

document, arbitrary code can be executed on the host in



Microsoft Office supports the concept of routing slips. These

can be embedded within documents to ease the process of

collaborative working. During Symantecâ??s investigation it was

discovered that within the metadata of Microsoftâ??s document

format that there is both a length value and a null

terminated string for the different sections of a routing

slip. Upon further investigation it was discovered that the

affected applications allocate memory based on the size

contained within the length field, but then proceeds to copy

the entire string up until the null termination.

The result in the case of Microsoft Word 2002 SP3 (fully

patched), is that we overwrite the saved return address on

the stack with a Unicode value. This can be used to obtain

control of the execution within the program.

Microsoft Word, Excel, PowerPoint and Outlook all behave

slightly differently and in the case of Office 2003, it

appears that the values move from the stack to the heap

which makes exploitation more complicated, yet not impossible.

Vendor Response:

The above vulnerability was addressed by Microsoft Security

Bulletin MS06-012. For details see


If there are any further questions about this statement,

please contact Microsoft support.


Apply the patch supplied by Microsoft according to your

organization's software maintenance test and deployment


Common Vulnerabilities and Exposures (CVE) Information:

The Common Vulnerabilities and Exposures (CVE) project has

assigned the following names to these issues. These are

candidates for inclusion in the CVE list

(http://cve.mitre.org), which standardizes names for

security problems.


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Copyright (c) 2006 by Symantec Corp.

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