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Microsoft Excel Lotus 1-2-3 File Parsing Vulnerability

Microsoft Excel Lotus 1-2-3 File Parsing Vulnerability
Posted Oct 14, 2010
Authored by Carsten Eiram | Site secunia.com

Secunia Research has discovered a vulnerability in Microsoft Excel, which can be exploited by malicious people to compromise a user's system. The vulnerability is caused by a boundary error in the parsing of certain records in Lotus 1-2-3 workbooks. This can be exploited to cause a heap-based buffer overflow via a Lotus 1-2-3 file containing a specially crafted, overly long record. Successful exploitation may allow execution of arbitrary code. Microsoft Excel versions 2002 SP3 and 2003 SP3 are affected.

tags | advisory, overflow, arbitrary
advisories | CVE-2010-3233
SHA-256 | eaa3b220e89e395f1191b6a6206ef0e5d0192c66b80b7db1d9065ae7233e71ad

Microsoft Excel Lotus 1-2-3 File Parsing Vulnerability

Change Mirror Download
====================================================================== 

Secunia Research 12/10/2010

- Microsoft Excel Lotus 1-2-3 File Parsing Vulnerability -

======================================================================
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

======================================================================
1) Affected Software

* Microsoft Excel 2002 SP3
* Microsoft Excel 2003 SP3

NOTE: Other versions may also be affected.

======================================================================
2) Severity

Rating: Moderately critical
Impact: System compromise
Where: Remote

======================================================================
3) Vendor's Description of Software

"Microsoft Office Excel is a powerful tool you can use to create and
format spreadsheets, and analyze and share information to make more
informed decisions.".

Product Link:
http://office.microsoft.com/excel

======================================================================
4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Microsoft Excel,
which can be exploited by malicious people to compromise a user's
system.

The vulnerability is caused by a boundary error in the parsing of
certain records in Lotus 1-2-3 workbooks. This can be exploited to
cause a heap-based buffer overflow via a Lotus 1-2-3 file containing
a specially crafted, overly long record.

Successful exploitation may allow execution of arbitrary code.

======================================================================
5) Solution

Apply patches provided by MS10-080.

======================================================================
6) Time Table

09/04/2010 - Vendor notified.
09/04/2010 - Vendor response.
25/05/2010 - Vendor provides status update.
30/09/2010 - Vendor provides status update.
12/10/2010 - Public disclosure.

======================================================================
7) Credits

Discovered by Carsten Eiram, Secunia Research.

======================================================================
8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2010-3233 for the vulnerability.

======================================================================
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/

======================================================================
10) Verification

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2010-55/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

======================================================================
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