CVE-2020-6342 in 3D Visual Enterprise Viewer
Summary
by MITRE
SAP 3D Visual Enterprise Viewer, version - 9, allows a user to open manipulated U3D 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-2020-6342 that stems from improper input validation mechanisms when processing U3D files. This vulnerability represents a classic example of insufficient validation of user-supplied data, which falls under CWE-20 - Improper Input Validation. The flaw specifically manifests when the application encounters manipulated U3D files from untrusted sources, creating a scenario where legitimate user interaction with the software becomes disrupted through unauthorized code execution or memory corruption.
The technical implementation of this vulnerability occurs at the file parsing layer where the viewer fails to properly validate the structure and content of U3D files before attempting to render them. U3D files are binary formats used for 3D graphics and visualization, and when these files contain malformed or maliciously crafted data, the viewer's input validation routines prove inadequate. This weakness enables an attacker to craft specially constructed U3D files that trigger memory corruption or unexpected behavior within the application's processing pipeline. The vulnerability is particularly concerning because it directly impacts the application's stability and availability, causing the viewer to crash and become temporarily unusable.
From an operational perspective, this vulnerability creates significant risks for organizations that rely on SAP 3D Visual Enterprise Viewer for design review, collaboration, or visualization tasks. The crash condition effectively renders the application unavailable until manual user intervention occurs through system restart, disrupting workflow and potentially causing productivity losses. The impact extends beyond simple application availability as this vulnerability could serve as a precursor to more severe exploitation techniques, particularly when combined with other attack vectors. The vulnerability's exploitation requires minimal technical skill, making it attractive to threat actors who may use it as part of broader attack campaigns.
The security implications of CVE-2020-6342 align with ATT&CK technique T1203 - Exploitation for Client Execution, where adversaries leverage application vulnerabilities to execute malicious code or cause denial-of-service conditions. Organizations using SAP 3D Visual Enterprise Viewer should consider this vulnerability as part of their broader threat landscape, particularly in environments where users may receive files from external sources or where social engineering attacks could be employed to deliver malicious U3D files. The vulnerability also highlights the importance of input sanitization and validation in rich media processing applications, as similar issues may exist in other 3D visualization or file processing software components.
Mitigation strategies for this vulnerability include immediate application of SAP security patches and updates, implementation of network-level restrictions to prevent unauthorized file transfers, and deployment of application whitelisting controls to limit execution of untrusted U3D files. Organizations should also consider implementing network segmentation and monitoring solutions to detect potential exploitation attempts. The vulnerability demonstrates the critical importance of validating all user-supplied input, particularly in applications that process complex binary formats, as outlined in security best practices for input validation and secure coding practices.