CVE-2020-6344 in 3D Visual Enterprise Viewer
Summary
by MITRE
SAP 3D Visual Enterprise Viewer, version - 9, allows a user to open manipulated PDF 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-2020-6344 that stems from improper input validation mechanisms when processing PDF files. This vulnerability specifically affects the application's handling of manipulated PDF content received from untrusted sources, creating a pathway for denial of service attacks that can severely disrupt business operations. The flaw exists within the viewer's file parsing logic where insufficient validation occurs on incoming PDF data structures, allowing maliciously crafted PDF files to trigger unexpected application behavior. The vulnerability is categorized under CWE-20, Improper Input Validation, which represents one of the most fundamental and commonly exploited weaknesses in software applications. This weakness is particularly dangerous in enterprise environments where 3D visualization tools are critical for product design, engineering, and collaboration processes, making the impact of this vulnerability significantly more severe than typical denial of service conditions.
The technical exploitation of this vulnerability occurs when an attacker crafts a specially designed PDF file that contains malformed or malicious data structures that the viewer's parsing engine cannot properly handle. When the application attempts to process this manipulated file, the improper input validation fails to detect the anomalous content, leading to application instability and eventual crash. The crash results in the viewer application becoming temporarily unavailable, requiring manual intervention through user restart procedures to restore functionality. This disruption can occur during critical design reviews, collaborative sessions, or automated processes where the viewer is actively in use, potentially causing significant productivity losses and operational delays. The vulnerability demonstrates a classic example of how insufficient input sanitization can lead to arbitrary code execution risks, even if the immediate impact is limited to application crash behavior.
The operational impact of CVE-2020-6344 extends beyond simple application availability issues, as it represents a potential gateway for more sophisticated attacks within enterprise networks. Organizations utilizing SAP 3D Visual Enterprise Viewer in their product development workflows face risks of operational disruption during critical project phases when the viewer becomes unavailable. The vulnerability affects the application's stability during routine operations, potentially causing delays in design reviews, collaborative work sessions, and automated data processing tasks. From an attack perspective, this vulnerability aligns with ATT&CK technique T1203, Exploitation for Client Execution, where adversaries leverage application vulnerabilities to execute malicious code or cause denial of service. The temporary unavailability of the viewer can cascade into broader operational issues, particularly in environments where multiple users depend on the same visualization resources for their daily tasks.
Mitigation strategies for CVE-2020-6344 should focus on implementing robust input validation mechanisms and restricting PDF file sources within the enterprise environment. Organizations should immediately apply the vendor-provided patches and updates to address the vulnerability, as SAP has released security fixes specifically targeting this issue. Network segmentation and access controls should be implemented to limit exposure of the viewer application to untrusted networks and sources, preventing unauthorized users from delivering malicious PDF content. Regular security assessments and penetration testing should be conducted to identify similar validation weaknesses in other enterprise applications. Additionally, implementing application whitelisting policies and restricting user permissions for PDF file handling can significantly reduce the attack surface. Organizations should also establish incident response procedures specifically addressing application availability issues and ensure proper backup and recovery mechanisms are in place to minimize downtime during vulnerability exploitation events. The vulnerability serves as a reminder of the critical importance of input validation in enterprise applications and the potential consequences of inadequate security controls in visualization and collaboration tools.