CVE-2021-34298 in JT2Go
Summary
by MITRE • 07/13/2021
A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The BMP_Loader.dll library in affected applications lacks proper validation of user-supplied data prior to performing further free operations on an object when parsing BMP files. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-13060)
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Analysis
by VulDB Data Team • 07/16/2021
The vulnerability identified as CVE-2021-34298 represents a critical code execution flaw affecting JT2Go and Teamcenter Visualization software versions prior to V13.2. This issue resides within the BMP_Loader.dll library component that handles bitmap file parsing operations. The vulnerability stems from inadequate input validation mechanisms that fail to properly sanitize user-supplied data before processing, creating a pathway for malicious code injection. The flaw specifically manifests when the application attempts to perform memory deallocation operations on objects that have been improperly initialized due to insufficient validation of BMP file structures.
The technical exploitation of this vulnerability follows a classic buffer overflow pattern where malformed BMP file data triggers improper memory management operations. When the BMP_Loader.dll processes a specially crafted BMP file, the lack of proper bounds checking and data validation allows an attacker to manipulate memory pointers and execute arbitrary code within the context of the currently running process. This type of vulnerability maps directly to CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write operations. The vulnerability's impact is amplified by the fact that it operates at the application level without requiring elevated privileges, making it particularly dangerous for environments where these visualization tools are commonly used for engineering and design work.
From an operational perspective, the vulnerability poses significant risks to organizations utilizing these software platforms for product lifecycle management and engineering visualization. Attackers could leverage this flaw to gain unauthorized access to sensitive design data, potentially compromising intellectual property and trade secrets. The attack vector requires only the ability to convince a user to open a malicious BMP file, which can be achieved through social engineering tactics, email attachments, or compromised websites. The vulnerability's exploitation capability aligns with ATT&CK technique T1059.007, which covers command and scripting interpreter execution, and T1203, which involves exploitation for client execution. Organizations with extensive use of these visualization tools face elevated risk during routine operations where users may encounter untrusted bitmap files from external sources.
Mitigation strategies for CVE-2021-34298 should prioritize immediate software updates to versions V13.2 or later where the vulnerability has been addressed. System administrators should implement strict file validation policies that prevent automatic execution of potentially malicious files, particularly in environments where these visualization tools are used. Network segmentation and application whitelisting can help reduce the attack surface by limiting access to vulnerable applications. Additionally, organizations should conduct thorough security assessments of their existing environments to identify any potential exploitation attempts, while implementing monitoring solutions that can detect anomalous memory allocation patterns or unexpected code execution within the affected applications. Regular security awareness training for users can help prevent social engineering attacks that might deliver malicious BMP files to target systems.