ZDI-06-004: Microsoft Excel File Format Parsing Vulnerability
March 14, 2006
-- CVE ID:
-- Affected Vendor:
-- Affected Products:
-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability since February 21, 2006 by Digital Vaccine protection
filter ID 4156. For further product information on the TippingPoint IPS:
-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Microsoft Office. Exploitation requires that
the attacker coerce the target into opening a malicious .XLS file.
The specific flaw exists within the parsing of the BIFF file format used
by Microsoft Excel. During the processing of malformed BOOLERR records,
user-supplied data may be insecurely referenced thereby leading to the
eventual execution of arbitrary code.
-- Vendor Response:
Microsoft has addressed this issue in Microsoft security bulletin MS06-012
titled "Vulnerabilities in Microsoft Office Could Allow Remote Code
-- Disclosure Timeline:
2006.01.24 - Vulnerability reported to vendor
2006.02.21 - Digital Vaccine released to TippingPoint customers
2006.03.13 - Vulnerability information provided to ZDI security partners
2006.03.14 - Coordinated public release of advisory
This vulnerability was discovered by Arnaud Dovi aka 'class101',
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