CVE-2017-11824 in Windows
Summary
by MITRE
The Microsoft Graphics Component on Microsoft 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, 1607, and 1703, and Windows Server 2016 allows an elevation of privilege vulnerability in the way it handles objects in memory, aka "Windows Graphics Component Elevation of Privilege Vulnerability".
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Analysis
by VulDB Data Team • 09/10/2024
The vulnerability identified as CVE-2017-11824 represents a critical elevation of privilege flaw within the Microsoft Graphics Component that affects multiple Windows operating systems including server and client versions. This vulnerability stems from improper handling of objects in memory during graphics processing operations, creating a pathway for malicious actors to escalate their privileges from standard user level to system level access. The affected components include 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 versions 1511, 1607, and 1703, as well as Windows Server 2016, making it a widespread concern across the Windows ecosystem.
The technical exploitation of this vulnerability occurs through memory corruption issues within the graphics component's object handling mechanisms. When processing graphics objects, the component fails to properly validate memory operations, allowing attackers to manipulate memory structures and execute arbitrary code with elevated privileges. This flaw falls under the CWE-121 category of "Stack-based Buffer Overflow" and potentially CWE-122 "Heap-based Buffer Overflow" as it involves improper memory management during graphics processing. The vulnerability specifically manifests when the graphics component processes certain graphic elements that trigger memory corruption conditions, enabling attackers to craft malicious payloads that can be executed within the context of the graphics subsystem.
From an operational impact perspective, this vulnerability presents a severe threat to enterprise environments where attackers could leverage it to gain system-level access and potentially compromise entire networks. The vulnerability allows for privilege escalation without requiring user interaction, making it particularly dangerous as it can be exploited through automated attacks or during routine system operations. Attackers could use this vulnerability to install backdoors, exfiltrate sensitive data, or establish persistent access to compromised systems. The vulnerability's presence across multiple Windows versions means that organizations with mixed operating system environments face increased risk, as attackers can target the most vulnerable system in their network. This type of vulnerability aligns with ATT&CK technique T1068 "Exploitation for Privilege Escalation" and could enable further lateral movement within networks through techniques such as T1078 "Valid Accounts" and T1566 "Phishing for Information".
Mitigation strategies for CVE-2017-11824 should prioritize immediate patch deployment through Microsoft's security updates, as the vulnerability has been addressed through official Microsoft security bulletins. Organizations should implement network segmentation to limit potential attack surfaces and monitor for unusual graphics processing activities that might indicate exploitation attempts. Additional protective measures include disabling unnecessary graphics processing features, implementing application whitelisting for graphics-related applications, and maintaining comprehensive monitoring of privilege escalation events. Security teams should also consider deploying exploit prevention technologies and regularly review system logs for evidence of memory corruption or privilege escalation attempts. The vulnerability's classification as a critical issue by Microsoft underscores the importance of prompt remediation and ongoing security posture assessment to prevent exploitation attempts that could lead to full system compromise and data breaches.