CVE-2020-6329 in 3D Visual Enterprise Viewer
Summary
by MITRE
SAP 3D Visual Enterprise Viewer, version - 9, allows a user to open manipulated SKP 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 that stems from improper input validation when processing SKP files from untrusted sources. This vulnerability represents a classic buffer overflow condition that occurs when the application fails to properly validate the structure and content of incoming SKP files. The flaw exists within the file parsing mechanism that does not adequately sanitize or verify the integrity of the input data before processing, creating an exploitable condition that can be leveraged by malicious actors. The vulnerability is classified under CWE-20, which specifically addresses improper input validation, making it a fundamental security weakness that affects the application's ability to handle malformed data gracefully.
The technical exploitation of this vulnerability manifests through a simple yet effective attack vector where an attacker crafts a malicious SKP file designed to trigger an application crash upon opening. When the vulnerable viewer attempts to parse this manipulated file, the improper validation allows the malformed data to cause memory corruption or unexpected behavior within the application's processing pipeline. This results in the complete application crash and temporary unavailability until manual user intervention is performed to restart the application. The vulnerability does not appear to permit arbitrary code execution or privilege escalation, but rather focuses on availability disruption through service denial.
The operational impact of this vulnerability extends beyond simple application instability, as it creates potential for broader business disruption within organizations that rely heavily on 3D visualization capabilities. In enterprise environments where multiple users may access shared 3D content repositories, a single malicious file could compromise the availability of critical visualization tools for extended periods. This vulnerability particularly affects organizations using SAP 3D Visual Enterprise Viewer for design reviews, product visualization, or collaborative engineering processes where uninterrupted access to 3D content is essential. The attack surface is broad as SKP files are commonly shared across departments and with external partners, increasing the likelihood of encountering maliciously crafted files.
Organizations should implement immediate mitigations including strict file validation procedures and user education regarding the dangers of opening files from untrusted sources. Network segmentation and file filtering mechanisms can help prevent the propagation of malicious SKP files within enterprise environments. Regular security updates and patches from SAP should be prioritized to address this vulnerability, as the company has likely released remediation measures in response to this discovery. The ATT&CK framework categorizes this type of vulnerability under T1203, which involves Exploitation for Client Execution, and T1499, which covers Network Denial of Service, highlighting the dual nature of the threat as both a client-side execution vector and a service disruption mechanism. Security teams should monitor for potential exploitation attempts and establish incident response procedures to quickly address any successful exploitation attempts that may lead to extended service outages.