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Microsoft Hierarchical FlexGrid Control Integer Overflows

Microsoft Hierarchical FlexGrid Control Integer Overflows
Posted Dec 9, 2008
Authored by Carsten Eiram | Site secunia.com

Secunia Research has discovered some vulnerabilities in Microsoft Hierarchical FlexGrid Control bundled with various products, which can be exploited by malicious people to compromise a user's system. The vulnerabilities are caused due to integer overflow errors in the ActiveX control (mshflxgd.ocx) when handling the "Rows" and "Cols" properties and the "ExpandAll()" and "CollapseAll()" methods. These can be exploited to corrupt memory. Successful exploitation allows execution of arbitrary code. Microsoft Hierarchical FlexGrid Control 6.0.88.4 is affected.

tags | advisory, overflow, arbitrary, vulnerability, activex
advisories | CVE-2008-4254
SHA-256 | 6e220530f9f2bbf0cc8d3277a36675fa7b06bf0bdfafeb2b69efb664ba2bbffa

Microsoft Hierarchical FlexGrid Control Integer Overflows

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

Secunia Research 09/12/2008

- Microsoft Hierarchical FlexGrid Control Integer Overflows -

======================================================================
Table of Contents

Affected Software....................................................1
Severity.............................................................2
Description of Vulnerability.........................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
References...........................................................7
About Secunia........................................................8
Verification.........................................................9

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

* Microsoft Hierarchical FlexGrid Control 6.0.88.4

NOTE: Other versions may also be affected.

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

Rating: Highly critical
Impact: System compromise
Where: Remote

======================================================================
3) Description of Vulnerability

Secunia Research has discovered some vulnerabilities in Microsoft
Hierarchical FlexGrid Control bundled with various products, which can
be exploited by malicious people to compromise a user's system.

The vulnerabilities are caused due to integer overflow errors in the
ActiveX control (mshflxgd.ocx) when handling the "Rows" and "Cols"
properties and the "ExpandAll()" and "CollapseAll()" methods. These
can be exploited to corrupt memory.

Successful exploitation allows execution of arbitrary code.

======================================================================
4) Solution

Apply patches from MS08-070.

======================================================================
5) Time Table

28/08/2007 - Vendor notified.
28/08/2007 - Vendor response.
26/09/2007 - Additional information provided and status update
requested.
26/09/2007 - Vendor informs that status update will be provided soon.
10/10/2007 - Vendor provides status update.
23/11/2007 - Status update requested.
24/11/2007 - Vendor provides status update.
15/08/2008 - Status update requested.
09/09/2008 - Status update requested.
26/09/2008 - Status update requested and vendor informed that
advisory will be published in a week if no status update
is provided.
29/09/2008 - Vendor provides status update.
31/10/2008 - Vendor provides status update (targeted for November).
07/11/2008 - Vendor provides status update (targeted for December).
05/12/2008 - Vendor provides status update (on track for December).
09/12/2008 - Vendor acknowledges that fix will be issued today.
09/12/2008 - Vendor publishes security bulletin.
09/12/2008 - Public disclosure.

======================================================================
6) Credits

Discovered by Carsten Eiram, Secunia Research.

======================================================================
7) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2008-4254 for the vulnerability.

MS08-070 (KB932349):
http://www.microsoft.com/technet/security/Bulletin/MS08-070.mspx

======================================================================
8) 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/

======================================================================
9) Verification

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-72/

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

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