CVE-2020-6346 in 3D Visual Enterprise Viewer
Summary
by MITRE
SAP 3D Visual Enterprise Viewer, version - 9, allows a user to open manipulated BMP 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-2020-6346 that stems from improper input validation when processing bitmap image files. This vulnerability specifically affects the application's handling of manipulated bmp files received from untrusted sources, creating a significant security risk that can be exploited by malicious actors. The flaw exists within the viewer's file parsing mechanism where insufficient validation occurs on incoming bmp file structures, allowing crafted malicious inputs to bypass normal processing controls. This vulnerability is categorized under CWE-20, which represents improper input validation, and represents a classic example of a buffer overflow or memory corruption issue that can be triggered through file format manipulation. The attack surface is particularly concerning as it involves user interaction with potentially malicious files, making it susceptible to social engineering attacks where users might unknowingly open compromised bitmap files. When exploited, the vulnerability causes the application to crash immediately upon attempting to process the manipulated bmp file, leading to temporary unavailability of the viewer service until manual user intervention is performed through application restart. This disruption of service can have cascading effects in enterprise environments where the viewer is used for critical 3d visualization tasks, potentially impacting productivity and operational continuity. The vulnerability's impact extends beyond simple application instability as it represents a potential denial of service vector that could be amplified in automated attack scenarios. From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1203, which involves exploitation of software vulnerabilities for privilege escalation or service disruption, and T1059, which encompasses execution of malicious code through file-based attacks. The lack of proper input sanitization means that any user who opens a crafted bmp file, regardless of their privilege level, can trigger the crash condition, making it particularly dangerous in multi-user environments where untrusted file sharing occurs. Organizations utilizing SAP 3D Visual Enterprise Viewer version 9 should immediately implement mitigations including restricting file access controls, implementing strict file validation policies, and deploying network-based intrusion detection systems to monitor for suspicious file handling activities. Additionally, regular security assessments should be conducted to identify similar input validation flaws in other SAP components, as this vulnerability demonstrates a pattern of insufficient security controls in file processing functions. The vulnerability highlights the importance of implementing defense-in-depth strategies, including application whitelisting, sandboxed file processing environments, and comprehensive user education about the risks of opening untrusted files from unknown sources. System administrators should also consider implementing automated patch management processes to ensure timely deployment of vendor security updates and maintain detailed audit logs of file processing activities to facilitate incident response and forensic analysis when such vulnerabilities are exploited.