Content

(MS09-067) Excel Document Parsing Heap Overflow Vulnerability (972652)

Type
Buffer Overflow
Impact of exploitation
Remote Code Execution
User Interaction
user interaction is needed
Attack Vector
Maliciously Crafted File
Rating
Medium
CVE reference
CVE-2009-3130,
Vendor Status
Responded and patched
Vulnerable systems
Excel  2002 SP3,
Office for Mac  2004,
Office for Mac  2008,
Summary
A remote code execution vulnerability exists in the way Excel handles files with malformed BIFF records. Such a file might be included in an e-mail attachment or hosted on a malicious Web site.

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Description

A remote code execution vulnerability exists in the way Excel handles files with malformed BIFF records. Such a file might be included in an e-mail attachment or hosted on a malicious Web site. An attacker could exploit the vulnerability by constructing a specially crafted Excel file that could allow remote code execution. ? The vulnerability cannot be exploited automatically through e-mail. For an attack to be successful, a user must open an attachment that is sent in an e-mail message. ? An attacker who successfully exploited this vulnerability could gain the same user rights as the local user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

McAfee Product Mitigation & Recommendations

Recommendations

The vendor has released a patch to address this issue: http://www.microsoft.com/technet/security/bulletin/ms09-067.mspx

McAfee Product Mitigation

McAfee Foundstone
Signature:
(MS09-067) Excel Document Parsing Heap Overflow Vulnerability (972652)
Signature identifier:
7322
Release date:
11/10/2009

Additional Resources

(MS09-067) Excel Document Parsing Heap Overflow Vulnerability (972652)

http://www.microsoft.com/technet/security/bulletin/ms09-067.mspx

All Information

Timeline -

11/10/2009

Vendor has provided a patch.

Description -

A remote code execution vulnerability exists in the way Excel handles files with malformed BIFF records. Such a file might be included in an e-mail attachment or hosted on a malicious Web site. An attacker could exploit the vulnerability by constructing a specially crafted Excel file that could allow remote code execution. ? The vulnerability cannot be exploited automatically through e-mail. For an attack to be successful, a user must open an attachment that is sent in an e-mail message. ? An attacker who successfully exploited this vulnerability could gain the same user rights as the local user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

McAfee Product Mitigation & Recommendations

Recommendations -

The vendor has released a patch to address this issue: http://www.microsoft.com/technet/security/bulletin/ms09-067.mspx

McAfee Product Mitigation

McAfee Foundstone
Signature:
(MS09-067) Excel Document Parsing Heap Overflow Vulnerability (972652)
Signature identifier:
7322
Release date:
11/10/2009

Additional Resources

Additional Resources -

(MS09-067) Excel Document Parsing Heap Overflow Vulnerability (972652)

http://www.microsoft.com/technet/security/bulletin/ms09-067.mspx