CVE-2020-1248 in Windows
Summary
by MITRE
A remote code execution vulnerability exists in the way that the Windows Graphics Device Interface (GDI) handles objects in the memory, aka 'GDI+ Remote Code Execution Vulnerability'.
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Analysis
by VulDB Data Team • 10/23/2020
The vulnerability identified as CVE-2020-1248 represents a critical remote code execution flaw within the Windows Graphics Device Interface GDI+ component. This vulnerability stems from improper handling of specially crafted graphics objects in memory, specifically affecting how the system processes and manages graphical data structures. The flaw exists in the Windows operating system's graphics rendering subsystem, making it particularly dangerous as it can be exploited through various attack vectors that deliver malicious graphics content to vulnerable systems. Security researchers have classified this as a remote code execution vulnerability because an attacker can potentially execute arbitrary code on a target system without requiring local access or user interaction beyond the initial delivery of the malicious content.
The technical root cause of this vulnerability lies within the memory management mechanisms of GDI+ when processing certain graphics objects, particularly those involving bitmap and image data manipulation. The flaw manifests when the system attempts to process malformed or specially crafted graphics objects that trigger buffer overflow conditions or memory corruption scenarios within the graphics rendering pipeline. This type of vulnerability falls under CWE-121, which describes heap-based buffer overflow conditions, and more specifically aligns with CWE-787, indicating outbound buffer copy without bounds checking. The vulnerability occurs during the processing of graphics objects in memory, where insufficient validation of input parameters leads to memory corruption that can be leveraged by attackers to execute malicious code with the privileges of the targeted process.
From an operational perspective, this vulnerability poses significant risks to enterprise environments as it can be exploited through multiple attack surfaces including web browsers, email clients, and document viewers that utilize Windows GDI+ for rendering graphics content. The attack vector typically involves delivering malicious graphics content through web pages or email attachments that, when rendered by vulnerable applications, trigger the exploitable code path within GDI+. The vulnerability affects multiple Windows versions including Windows 10, Windows Server 2016, and Windows Server 2019, making it particularly concerning for organizations with diverse operating system deployments. Attackers can leverage this vulnerability to gain unauthorized access to systems, potentially escalating privileges and establishing persistent access within network environments.
The impact of CVE-2020-1248 extends beyond simple code execution as it can facilitate broader compromise strategies within enterprise networks. According to ATT&CK framework, this vulnerability maps to T1059.007 for command and scripting interpreter and T1068 for exploit for privilege escalation, as the initial code execution can be used to establish further footholds within compromised systems. Organizations should implement immediate mitigations including applying Microsoft security patches, implementing network segmentation to limit lateral movement, and deploying application whitelisting policies to restrict execution of potentially malicious graphics processing components. The vulnerability also highlights the importance of regular security assessments and monitoring for anomalous graphics processing activities that might indicate exploitation attempts. Additionally, security teams should consider implementing endpoint detection and response solutions that can identify suspicious memory access patterns and graphics object processing behaviors indicative of exploitation attempts.