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CVE-2009-0221

Status Candidate

Overview

Integer overflow in Microsoft Office PowerPoint 2002 SP3 and 2003 SP3 allows remote attackers to execute arbitrary code via a PowerPoint file containing a crafted record type for "collaboration information for different slides" that contains a field that specifies a large number of records, which triggers an under-allocated buffer and a heap-based buffer overflow, aka "Integer Overflow Vulnerability."

Related Files

iDEFENSE Security Advisory 2009-05-12.9
Posted May 13, 2009
Authored by iDefense Labs, Sean Larsson | Site idefense.com

iDefense Security Advisory 05.12.09 - Remote exploitation of an integer overflow vulnerability in Microsoft Corp.'s PowerPoint could allow an attacker to execute arbitrary code with the privileges of the current user. The vulnerability occurs during the parsing of two related PowerPoint record types. The first record type is used to specify collaboration information for different slides. One of the fields in this record contains a 32-bit integer that is used to specify the number of a specific type of records that are present in the file. This integer is used in a multiplication operation that calculates the size of a heap buffer that will be used to store the records as they are read in from the file. The calculation can overflow, resulting in an undersized heap buffer being allocated. By providing a large value for the record count, and inserting enough dummy records, it is possible to trigger a heap based buffer overflow. iDefense has confirmed the existence of these vulnerabilities in PowerPoint 2000 SP3, 2002 XP SP3, 2003 SP2, and 2003 SP3.

tags | advisory, remote, overflow, arbitrary, vulnerability
advisories | CVE-2009-0221
SHA-256 | 84bba074996caa0939a7e44b41d9a7389b4b11a60328716bd8fa6f9a381fe0af
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