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Secunia Research 09/12/2008
- Microsoft Word RTF Polyline/Polygon Integer Overflow -
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Table of Contents
Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10
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1) Affected Software
* Microsoft Office Word 2003 SP3
* Microsoft Office Word Viewer 2003 SP3
NOTE: Other versions may also be affected.
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2) Severity
Rating: Highly critical
Impact: System compromise
Where: Remote
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3) Vendor's Description of Software
"Office Word ... provides editing and reviewing tools that help you
create professional documents more easily than ever before."
Product Link:
http://office.microsoft.com/en-us/word/default.aspx
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4) Description of Vulnerability
Secunia Research has discovered a vulnerability in Microsoft Office
Word, which can be exploited by malicious people to compromise a
user's system.
The vulnerability is caused due to an integer overflow error when
calculating the space required for the specified number of points in
a polyline or polygon. This can be exploited to cause a heap-based
buffer overflow during parsing of objects in Rich Text Format (.rtf)
files e.g. when a user opens a specially crafted .rtf file with Word
or previews a specially crafted e-mail.
Successful exploitation may allow execution of arbitrary code.
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5) Solution
Apply patches from MS08-072.
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6) Time Table
16/05/2008 - Vendor notified.
16/05/2008 - Vendor response.
03/07/2008 - Vendor provides status update.
15/08/2008 - Status update requested from vendor.
15/08/2008 - Vendor provides status update.
30/09/2008 - Vendor provides status update.
09/12/2008 - Vendor acknowledges that fix will be issued today.
09/12/2008 - Vendor publishes security bulletin.
09/12/2008 - Public disclosure.
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7) Credits
Discovered by Dyon Balding, Secunia Research.
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8) References
The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2008-4025 for the vulnerability.
MS08-072 (KB957173):
http://www.microsoft.com/technet/security/Bulletin/MS08-072.mspx
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9) About Secunia
Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:
http://secunia.com/advisories/business_solutions/
Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private
individuals, who are interested in or concerned about IT-security.
http://secunia.com/advisories/
Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the
security and reliability of software in general:
http://secunia.com/secunia_research/
Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:
http://secunia.com/corporate/jobs/
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/advisories/mailing_lists/
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10) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2008-21/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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