CVE-2020-27007 in JT2Go
Summary
by MITRE • 02/10/2021
A vulnerability has been identified in JT2Go (All versions < V13.1.0.1), Teamcenter Visualization (All versions < V13.1.0.1). Affected applications lack proper validation of user-supplied data when parsing of HPG files. This could result in a memory access past the end of an allocated buffer. An attacker could leverage this vulnerability to access data in the context of the current process. (ZDI-CAN-12207)
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 02/26/2021
This vulnerability exists in JT2Go and Teamcenter Visualization software versions prior to V13.1.0.1, representing a critical memory safety issue that stems from inadequate input validation during HPG file processing. The flaw manifests as a buffer overflow condition that occurs when the applications parse user-supplied data without proper bounds checking, allowing maliciously crafted HPG files to trigger memory access violations. The vulnerability is classified as a buffer overflow according to CWE-121, which specifically addresses issues related to insufficient boundary checking of data buffers. This type of vulnerability falls under the ATT&CK technique T1059.007 for command and scripting interpreter and can be leveraged for privilege escalation through process memory manipulation.
The technical implementation of this vulnerability involves the parsing of HPG (JT2Go Graphics) files which are used for 3D visualization and data exchange within the Teamcenter ecosystem. When these files are processed, the applications fail to validate the length or structure of incoming data, leading to scenarios where memory access extends beyond allocated buffer boundaries. This creates opportunities for attackers to manipulate memory contents or potentially execute arbitrary code within the context of the running process. The vulnerability is particularly concerning because it operates at the memory management level, where such issues can be exploited to gain elevated privileges or access sensitive data.
The operational impact of this vulnerability extends beyond simple data corruption, as it provides attackers with potential access to process memory spaces that may contain sensitive information or system credentials. Attackers could leverage this vulnerability through social engineering tactics or by enticing users to open maliciously crafted HPG files, which would then be processed by the vulnerable applications. The attack surface is particularly wide given that these applications are commonly used in engineering and design environments where file sharing is frequent, and users may not always verify the origin of files they open. This vulnerability represents a significant risk to organizations relying on Teamcenter Visualization for critical design and manufacturing processes.
Mitigation strategies should focus on immediate application updates to versions V13.1.0.1 or later, which contain the necessary input validation patches. Organizations should also implement strict file validation procedures and user education regarding the risks of opening untrusted files. Network segmentation and privilege separation can help limit the potential impact if exploitation occurs. Additionally, implementing application whitelisting policies and monitoring for unusual file processing activities can provide early detection of potential exploitation attempts. Security teams should consider deploying memory protection mechanisms such as address space layout randomization and data execution prevention to further reduce the exploitability of such buffer overflow conditions. The vulnerability highlights the importance of proper input validation and boundary checking in preventing memory safety issues, aligning with industry best practices for secure coding standards.