CVE-2008-4327 in Windows
Summary
by MITRE
gdiplus.dll in GDI+ in Microsoft Windows XP SP3 does not properly handle crafted .ico files, which allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a certain crash.ico file on a web site, and allows user-assisted attackers to cause a denial of service (divide-by-zero error and persistent application crash) via this crash.ico file on the desktop, a different vulnerability than CVE-2007-2237.
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Analysis
by VulDB Data Team • 11/05/2024
The vulnerability described in CVE-2008-4327 represents a critical flaw in the Graphics Device Interface Plus component of Microsoft Windows XP Service Pack 3, specifically within the gdiplus.dll library. This issue manifests when the system processes specially crafted icon files with the .ico extension, demonstrating how seemingly benign file formats can be weaponized to compromise system stability. The vulnerability stems from inadequate input validation and error handling mechanisms within the GDI+ graphics subsystem, which is responsible for rendering graphical elements in Windows applications and the operating system itself.
The technical implementation of this vulnerability involves a divide-by-zero error that occurs when the gdiplus.dll library attempts to process malformed .ico files containing mathematical operations that result in division by zero during the icon rendering process. When a malicious .ico file is encountered, either through web browsing or local execution, the graphics processing code fails to properly validate the mathematical operations within the icon's metadata, leading to a system crash. This behavior constitutes a classic denial of service condition where legitimate system operations are disrupted through the exploitation of arithmetic error handling flaws. The vulnerability specifically affects the icon processing pipeline within GDI+ and demonstrates poor defensive programming practices that fail to account for malformed input data.
The operational impact of CVE-2008-4327 extends beyond simple service disruption, as it creates persistent application crash conditions that can be triggered both remotely through web-based attacks and locally through user interaction with malicious files. Remote exploitation occurs when users browse to web pages hosting the malicious crash.ico file, causing the browser or other applications that utilize GDI+ to crash upon attempting to display the icon. Local exploitation happens when users open the malicious file directly from their desktop, creating a persistent crash condition that can affect multiple applications that rely on the GDI+ subsystem. This dual attack surface increases the exploitability of the vulnerability and demonstrates how graphics processing components can serve as attack vectors for both remote and local privilege escalation scenarios. The vulnerability's classification as a denial of service issue aligns with CWE-369, which addresses divide-by-zero errors, and reflects the broader category of input validation failures that compromise system stability.
Mitigation strategies for CVE-2008-4327 should focus on both immediate protective measures and long-term architectural improvements. System administrators should implement network-level controls to block .ico file downloads from untrusted sources and deploy application whitelisting policies that restrict execution of potentially malicious icon files. The most effective long-term solution involves applying Microsoft's security patches that address the underlying divide-by-zero error in gdiplus.dll, as well as implementing robust input validation mechanisms throughout the graphics processing pipeline. Organizations should also consider implementing monitoring solutions that detect abnormal application crash patterns and establish incident response procedures for handling graphics-related system failures. This vulnerability highlights the importance of secure coding practices and proper error handling in system components that process user-supplied data, aligning with ATT&CK technique T1499.004 for network denial of service and emphasizing the need for comprehensive input sanitization across all system interfaces that handle multimedia content processing.