CVE-2020-6352 in 3D Visual Enterprise Viewer
Summary
by MITRE
SAP 3D Visual Enterprise Viewer, version - 9, allows a user to open manipulated FBX file received from untrusted sources which results in crashing of the application and becoming temporarily unavailable until the user restarts the application, this is caused due to Improper Input Validation.
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Analysis
by VulDB Data Team • 09/09/2020
SAP 3D Visual Enterprise Viewer version 9 contains a critical vulnerability classified as CVE-2020-6352 that stems from improper input validation when processing FBX files from untrusted sources. This vulnerability represents a classic buffer overflow condition where the application fails to adequately validate file structure and content before processing, creating an exploitable entry point for malicious actors. The flaw exists within the file parsing mechanism that handles Autodesk FBX file format inputs, which are commonly used for 3D model exchange and visualization. When a specially crafted FBX file is opened, the application's input validation routines are bypassed, leading to memory corruption and subsequent application crash. This vulnerability directly maps to CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, which addresses heap-based buffer overflow scenarios. The impact extends beyond simple application instability as it creates a denial of service condition that can be exploited remotely, potentially disrupting business operations and user productivity. The vulnerability operates at the application layer and can be triggered through social engineering tactics where users are诱导 to open malicious FBX files delivered via email attachments, file sharing platforms, or compromised websites. According to ATT&CK framework, this vulnerability aligns with T1203 - Exploitation for Client Execution, as it enables remote code execution through compromised file formats. The technical implementation involves the viewer application's failure to perform proper bounds checking on file data, particularly in handling vertex arrays, mesh structures, and animation data within the FBX format. Attackers can manipulate file headers, data offsets, or mesh parameters to cause memory corruption during parsing. The vulnerability is particularly concerning because it requires no authentication or elevated privileges to exploit, making it accessible to any user who opens the malicious file. The crash behavior manifests as immediate application termination, requiring manual restart by the user, which can be disruptive in enterprise environments where 3D visualization tools are critical for design review and collaboration processes. Organizations using SAP 3D Visual Enterprise Viewer should consider immediate patching and implement network segmentation to limit exposure. Input validation controls should be enhanced to include comprehensive file format checking, and user awareness training should emphasize the importance of verifying file sources before opening. The vulnerability demonstrates the critical need for robust input sanitization in multimedia file processing applications, particularly those handling complex binary formats like FBX that contain extensive structural data. This flaw represents a significant security gap in the application's defensive architecture and highlights the importance of applying security controls throughout the software development lifecycle. Enterprises should also consider implementing automated file scanning solutions that can detect potentially malicious file structures before they are processed by the viewer application. The long-term implications include potential escalation to more severe exploits if attackers can leverage this initial foothold to gain deeper system access, making immediate remediation essential for maintaining operational security.