CVE-2020-1136 in Windows
Summary
by MITRE
A memory corruption vulnerability exists when Windows Media Foundation improperly handles objects in memory, aka 'Media Foundation Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2020-1028, CVE-2020-1126, CVE-2020-1150.
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Analysis
by VulDB Data Team • 10/16/2020
The memory corruption vulnerability identified as CVE-2020-1136 resides within Windows Media Foundation component, representing a critical security flaw that affects multiple Windows operating systems including Windows 10, Windows Server 2016, and Windows Server 2019. This vulnerability falls under the Common Weakness Enumeration category CWE-125, which describes out-of-bounds read conditions where an application accesses memory beyond its allocated boundaries. The flaw manifests when Media Foundation processes multimedia objects, particularly those involving media files with malformed or specially crafted headers that trigger improper memory handling routines.
The technical execution of this vulnerability occurs during the parsing of media files through Windows Media Foundation's internal processing mechanisms. When a maliciously crafted media file is encountered, the component fails to properly validate input parameters before accessing memory locations, leading to memory corruption that can result in arbitrary code execution. This memory corruption typically occurs in the context of media file parsing where the application attempts to read or write beyond allocated buffer boundaries, creating a condition that adversaries can exploit to execute malicious code with the privileges of the targeted user. The vulnerability is particularly dangerous because it can be triggered through various media file formats including but not limited to mp4, mpeg, and wmv files, making it a broad attack surface.
The operational impact of CVE-2020-1136 extends beyond simple memory corruption, as it represents a privilege escalation vector that can be leveraged for remote code execution. Attackers can craft malicious media files that, when opened or played by a victim's system, trigger the memory corruption flaw and allow for full system compromise. This vulnerability can be exploited through multiple attack vectors including email attachments, web downloads, or even streaming content, making it particularly dangerous in enterprise environments where users frequently interact with multimedia content. The vulnerability's exploitation can lead to complete system takeover, data exfiltration, and persistence mechanisms being established. According to MITRE ATT&CK framework, this vulnerability maps to techniques such as T1059 for command execution and T1068 for privilege escalation, making it a significant concern for cybersecurity professionals managing Windows environments.
Mitigation strategies for CVE-2020-1136 should include immediate installation of Microsoft security updates, which address the memory handling flaws in Media Foundation. Organizations should implement network segmentation and content filtering to prevent the execution of untrusted media files, particularly in high-risk environments. Additionally, users should be educated about the dangers of opening media files from untrusted sources, and system administrators should monitor for unusual network traffic patterns that might indicate exploitation attempts. The vulnerability also highlights the importance of maintaining up-to-date security patches and implementing robust application whitelisting policies to prevent execution of malicious media files. Microsoft recommends immediate patching as the primary defense mechanism, while organizations should also consider deploying intrusion detection systems that can identify exploitation attempts targeting this specific vulnerability.