CVE-2016-0118 in Windows
Summary
by MITRE
The PDF library in Microsoft Windows 10 Gold and 1511 allows remote attackers to execute arbitrary code via a crafted PDF document, aka "Windows Remote Code Execution Vulnerability."
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Analysis
by VulDB Data Team • 07/09/2022
The vulnerability identified as CVE-2016-0118 represents a critical remote code execution flaw within Microsoft Windows 10 operating systems, specifically affecting the Windows 10 Gold and version 1511 releases. This vulnerability resides in the PDF library component that processes and renders PDF documents within the Windows environment. The flaw enables remote attackers to craft malicious PDF files that can trigger arbitrary code execution on targeted systems when these documents are opened or processed by the vulnerable Windows operating system. The vulnerability stems from improper input validation and memory handling within the PDF processing library, creating a pathway for attackers to exploit the system through crafted malicious content.
This technical flaw operates through a buffer overflow or memory corruption mechanism that occurs during PDF parsing operations. When a user opens or previews a specially crafted PDF document, the vulnerable PDF library fails to properly validate the document structure and content, leading to memory corruption that can be leveraged by attackers to inject and execute malicious code with the privileges of the affected user. The vulnerability is particularly dangerous because it can be triggered through various attack vectors including email attachments, web downloads, or malicious websites that serve the crafted PDF files. The exploitation process typically involves crafting PDF documents that contain malformed structures or oversized data elements designed to overflow buffers and overwrite memory locations, ultimately allowing attackers to control the execution flow of the targeted process.
The operational impact of CVE-2016-0118 extends beyond individual system compromise to potentially enable broader network infiltration and lateral movement within enterprise environments. Once an attacker successfully exploits this vulnerability, they can establish persistent access, escalate privileges, and deploy additional malware or tools to further compromise the system. The vulnerability affects the core Windows PDF processing functionality, meaning any application or service that relies on Windows PDF rendering capabilities could be exploited, including web browsers, email clients, and document viewers. This makes the attack surface particularly broad and increases the likelihood of successful exploitation in real-world scenarios. Organizations running affected Windows 10 versions face significant risk of unauthorized access, data theft, and system compromise, with potential for widespread impact across multiple systems within their network infrastructure.
Microsoft addressed this vulnerability through security updates and patches released as part of their regular security bulletin cycle, specifically targeting the PDF library component in Windows 10. Organizations should implement immediate mitigation strategies including applying the relevant security updates, deploying application whitelisting policies to restrict PDF processing to trusted applications, and implementing network-based security controls to monitor and block suspicious PDF file transfers. The vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions, and demonstrates characteristics consistent with ATT&CK technique T1203, which involves exploiting software vulnerabilities for remote code execution. Security teams should also consider implementing endpoint detection and response solutions to identify potential exploitation attempts and monitor for anomalous behavior related to PDF processing activities. Regular security assessments and vulnerability scanning should be conducted to ensure all affected systems receive proper patching and that the environment remains protected against similar exploitation techniques.