CVE-2009-0222 in PowerPoint
Summary
by MITRE
Microsoft Office PowerPoint 2000 SP3, 2002 SP3, and 2003 SP3 allows remote attackers to execute arbitrary code via crafted sound data in a file that uses a PowerPoint 4.0 native file format, leading to a "pointer overwrite" and memory corruption, aka "Legacy File Format Vulnerability," a different vulnerability than CVE-2009-0223, CVE-2009-0226, CVE-2009-0227, and CVE-2009-1137.
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Analysis
by VulDB Data Team • 08/11/2021
This vulnerability resides within Microsoft Office PowerPoint versions 2000 SP3, 2002 SP3, and 2003 SP3, specifically targeting the handling of legacy file formats that predate PowerPoint 4.0. The flaw manifests when processing crafted sound data embedded within PowerPoint files using the native PowerPoint 4.0 format, creating a critical memory corruption condition that can be exploited remotely. The vulnerability operates through a pointer overwrite mechanism that fundamentally compromises the application's memory management, allowing attackers to manipulate program execution flow. This represents a classic buffer overflow condition where insufficient bounds checking occurs during the parsing of legacy sound data structures, leading to unauthorized memory access patterns that can be leveraged for code execution.
The technical exploitation of this vulnerability follows a well-established pattern that aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write vulnerabilities. Attackers craft malicious PowerPoint files containing malformed sound data that, when opened by vulnerable versions of PowerPoint, triggers the pointer overwrite during file parsing operations. The memory corruption occurs in the application's heap management system where the legacy file format parser fails to properly validate the size and structure of embedded sound data, resulting in a situation where attacker-controlled data can overwrite critical memory locations including function pointers or return addresses. This type of vulnerability falls under the ATT&CK technique T1203, where adversaries leverage application vulnerabilities to execute malicious code, specifically targeting the Office application suite through file format parsing flaws.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with a reliable vector for remote compromise of systems running vulnerable Office versions. The attack requires minimal user interaction since opening a malicious file triggers the exploit automatically, making it particularly dangerous in targeted phishing campaigns or social engineering scenarios. Organizations with legacy Office installations remain at significant risk since these older versions are often maintained for compatibility reasons, creating persistent attack surfaces that are difficult to fully eliminate from enterprise environments. The vulnerability's classification as a remote code execution flaw means that successful exploitation can lead to complete system compromise, potentially allowing attackers to establish persistent backdoors, escalate privileges, or deploy additional malware.
Mitigation strategies should prioritize immediate patching of affected systems with Microsoft security updates, as these vulnerabilities were addressed through official security releases. Organizations lacking immediate patch deployment capabilities should implement restrictive file handling policies that prevent automatic execution of PowerPoint files from untrusted sources, particularly those using legacy formats. Network-based mitigations include filtering PowerPoint file types at perimeter defenses and implementing application whitelisting controls to prevent execution of vulnerable Office components. The vulnerability's nature as a legacy file format issue also suggests that organizations should conduct comprehensive inventory audits to identify and phase out older Office versions that remain in production use. Security monitoring should focus on unusual file opening patterns and memory access anomalies that may indicate exploitation attempts, while incident response procedures should include specific protocols for handling suspected PowerPoint-based attacks.