CVE-2016-7212 in Windows
Summary
by MITRE
Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, and 1607, and Windows Server 2016 allow remote attackers to execute arbitrary code via a crafted image file, aka "Windows Remote Code Execution Vulnerability."
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Analysis
by VulDB Data Team • 09/29/2022
This vulnerability represents a critical remote code execution flaw affecting multiple versions of the windows operating system family. The vulnerability stems from improper handling of image files within the windows graphics rendering subsystem, specifically when processing crafted malicious image data. Attackers can exploit this weakness by enticing victims to open specially crafted image files that contain malformed data structures designed to trigger memory corruption during image processing operations. The flaw exists in the way windows handles image decoding and rendering, particularly affecting the windows graphics component that processes various image formats including jpeg, png, and bmp files. This vulnerability allows remote attackers to execute arbitrary code with the privileges of the logged-on user, potentially leading to full system compromise. The attack vector is particularly concerning as it can be delivered through email attachments, web downloads, or malicious websites without requiring user interaction beyond opening the malicious file. The vulnerability impacts a wide range of windows versions including vista through windows 10, making it particularly dangerous for organizations with diverse operating system environments. According to the common weakness enumeration framework, this vulnerability maps to cwe-121 which describes heap-based buffer overflow conditions that occur when a program writes data past the end of a buffer allocated on the heap, often leading to memory corruption and code execution. The attack follows patterns consistent with the attack tree framework where adversaries can leverage image processing components to gain unauthorized code execution. The operational impact extends beyond simple code execution as successful exploitation can lead to complete system compromise, data theft, and persistent backdoor access. Organizations face significant risk as the vulnerability can be exploited through multiple attack surfaces including email, web browsing, and file sharing scenarios. The exploitability factor is high due to the ease with which attackers can craft malicious image files and the widespread use of windows operating systems across enterprise environments. Microsoft addressed this vulnerability through security updates that improved input validation and memory management within the graphics processing components. The mitigation strategy involves applying the relevant security patches promptly and implementing network-based protections such as email filtering and web content filtering to prevent delivery of malicious image files. Additionally, users should be educated about the risks of opening untrusted image files and organizations should consider implementing application whitelisting policies to restrict execution of potentially malicious image processing components. The vulnerability demonstrates the ongoing challenges in securing graphics processing components within operating systems, as these components often handle complex data formats and require extensive memory management that can introduce security flaws. Security professionals should monitor for indicators of compromise related to this vulnerability and ensure that all affected systems receive the necessary security updates to prevent exploitation. The widespread nature of this vulnerability underscores the importance of maintaining current security patches and implementing defense-in-depth strategies to protect against similar attacks targeting graphics rendering components.