National Cyber-Alert System
Vulnerability Summary for CVE-2009-0561
Original release date:06/10/2009
Last revised:06/13/2009
Source:
US-CERT/NIST
Overview
Integer overflow in Excel in Microsoft Office 2000 SP3, Office XP SP3, Office 2003 SP3, and Office 2004 and 2008 for Mac; Excel in 2007 Microsoft Office System SP1 and SP2; Open XML File Format Converter for Mac; Microsoft Office Excel Viewer 2003 SP3; Microsoft Office Excel Viewer; Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2; and Microsoft Office SharePoint Server 2007 SP1 and SP2 allows remote attackers to execute arbitrary code via an Excel file with a Shared String Table (SST) record with a numeric field that specifies an invalid number of unique strings, which triggers a heap-based buffer overflow, aka "Record Integer Overflow Vulnerability."
Impact
CVSS Severity (version 2.0):
Impact Subscore:
10.0
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
References to Advisories, Solutions, and Tools
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External Source: MS
Name: MS09-021
Type: Advisory; Patch Information
External Source: VUPEN
Name: ADV-2009-1540
External Source: SECTRACK
Name: 1022351
External Source: BID
Name: 35245
External Source: BUGTRAQ
Name: 20090609 Secunia Research: Microsoft Excel String Parsing Integer Overflow Vulnerability
External Source: MISC
Name: http://secunia.com/secunia_research/2009-12/
External Source: OSVDB
Name: 54957
External Source: IDEFENSE
Name: 20090609 Microsoft Excel SST Record Integer Overflow Vulnerability