CVE-2021-22752 in IGSS Definition
Summary
by MITRE • 06/11/2021
A CWE-787: Out-of-bounds write vulnerability exists inIGSS Definition (Def.exe) V15.0.0.21140 and prior that could result in loss of data or remote code execution due to missing size checks, when a malicious WSP (Workspace) file is being parsed by IGSS Definition.
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Analysis
by VulDB Data Team • 06/14/2021
The vulnerability identified as CVE-2021-22752 represents a critical out-of-bounds write condition classified under CWE-787 within the IGSS Definition software component. This flaw affects version 15.0.0.21140 and earlier iterations of the Def.exe application, creating a significant security risk that could be exploited by threat actors to compromise affected systems. The vulnerability stems from insufficient input validation mechanisms during the parsing of Workspace files, specifically failing to implement proper size checks that would prevent buffer overflow conditions.
The technical implementation of this vulnerability occurs when the Def.exe application processes maliciously crafted WSP (Workspace) files without adequate bounds checking. This absence of size validation allows an attacker to construct a specially formatted Workspace file that, when opened by the vulnerable software, triggers an out-of-bounds memory write operation. The flaw operates at the memory management level where the application attempts to write data beyond the allocated buffer boundaries, potentially overwriting adjacent memory locations. This type of vulnerability falls under the ATT&CK technique T1203 - Exploitation for Client Execution, as it enables arbitrary code execution through manipulation of the application's memory handling routines.
The operational impact of this vulnerability extends beyond simple data corruption, presenting attackers with opportunities for complete system compromise. An attacker who successfully exploits this vulnerability could achieve remote code execution, allowing them to install malware, modify system configurations, or exfiltrate sensitive data from the compromised environment. The loss of data or system integrity represents a direct consequence of the out-of-bounds write condition, potentially leading to denial of service scenarios or persistent backdoor access. Organizations utilizing IGSS Definition software in industrial control systems or critical infrastructure environments face heightened risk due to the potential for operational technology disruptions.
Mitigation strategies for CVE-2021-22752 should prioritize immediate software updates from the vendor to address the underlying buffer overflow condition. System administrators should implement network segmentation to limit access to affected systems and establish strict file validation policies for Workspace files. The implementation of application whitelisting controls can prevent execution of unauthorized software components, while regular security assessments should verify that proper input validation mechanisms are in place. Organizations should also consider deploying intrusion detection systems that monitor for suspicious file processing activities and maintain comprehensive backup strategies to ensure rapid recovery from potential exploitation attempts. The vulnerability demonstrates the importance of secure coding practices and proper input validation as outlined in industry standards such as the OWASP Top Ten and NIST Cybersecurity Framework, emphasizing the need for defensive programming techniques that prevent memory corruption vulnerabilities from being exploited in real-world scenarios.