CVE-2013-2558 in Windows
Summary
by MITRE
Unspecified vulnerability in Microsoft Windows 8 allows remote attackers to cause a denial of service (reboot) or possibly have unknown other impact via a crafted TrueType Font (TTF) file, as demonstrated by the 120612-69701-01.dmp error report.
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Analysis
by VulDB Data Team • 09/17/2018
The vulnerability identified as CVE-2013-2558 represents a critical security flaw within Microsoft Windows 8 operating system that enables remote attackers to execute unauthorized system disruptions through maliciously crafted TrueType Font files. This vulnerability specifically affects the Windows font processing subsystem and demonstrates the inherent risks associated with font rendering mechanisms in modern operating systems. The issue manifests when the system attempts to process a specially crafted TTF file, leading to unexpected system behavior that can result in complete system reboot or potentially more severe consequences. The vulnerability was particularly concerning as it could be exploited remotely without requiring any user interaction or elevated privileges, making it an attractive target for malicious actors seeking to disrupt system availability.
The technical root cause of this vulnerability lies in the insufficient input validation and memory handling within Windows' TrueType font processing engine. When a malicious TTF file is encountered, the font rendering component fails to properly validate the font structure and memory allocation patterns, leading to memory corruption that ultimately triggers system instability. This flaw aligns with CWE-121, which addresses stack-based buffer overflow conditions, and CWE-122, which covers heap-based buffer overflow vulnerabilities. The vulnerability demonstrates how font processing libraries can become attack vectors when they fail to properly sanitize input data, particularly when dealing with complex font formats that contain numerous embedded structures and metadata elements. The exploitation mechanism typically involves crafting a TTF file with malformed headers or oversized data structures that cause the system to allocate insufficient memory or overwrite critical system memory regions during font rendering operations.
The operational impact of CVE-2013-2558 extends beyond simple denial of service conditions, as it represents a potential vector for more sophisticated attacks that could lead to system compromise. While the primary demonstration showed reboot conditions, the underlying memory corruption vulnerability could potentially be leveraged to execute arbitrary code or escalate privileges within the system context. This vulnerability directly maps to ATT&CK technique T1059.007, which covers the use of command and scripting interpreter for execution, as attackers could potentially use the instability to create conditions favorable for code injection. The vulnerability affects Windows 8 systems and potentially other Windows versions that utilize similar font processing mechanisms, making it a widespread concern for enterprise environments. Organizations running Windows 8 systems were particularly vulnerable as the operating system was still relatively new and had not yet received comprehensive security hardening measures against such font-based attacks.
Mitigation strategies for CVE-2013-2558 require immediate implementation of Microsoft security patches and updates to address the underlying font processing flaws. System administrators should prioritize applying the relevant security updates from Microsoft as soon as they become available, as these patches typically include enhanced input validation and memory management controls for font processing components. Network segmentation and firewall rules can help limit the exposure of systems to potentially malicious font files, while monitoring systems should be configured to detect unusual font processing activities or unexpected system reboots. Additional defensive measures include implementing application whitelisting policies that restrict the execution of untrusted font files, disabling unnecessary font rendering capabilities where possible, and conducting regular security assessments to identify systems that may be vulnerable to similar font-based attack vectors. Organizations should also consider implementing automated patch management systems to ensure timely deployment of security updates across all Windows 8 installations.