CVE-2015-7375 in InduSoft Web Studio
Summary
by MITRE
Schneider Electric InduSoft Web Studio before 8.0 allows remote attackers to execute arbitrary code or cause a denial of service (unhandled runtime exception and application crash) via a crafted Indusoft Project file.
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Analysis
by VulDB Data Team • 11/18/2024
Schneider Electric InduSoft Web Studio version 8.0 and earlier contains a critical vulnerability that enables remote attackers to execute arbitrary code or cause denial of service through manipulation of project files. This vulnerability represents a significant security risk for industrial control systems and SCADA environments where InduSoft Web Studio is deployed. The flaw manifests when the software processes a specially crafted Indusoft Project file, which triggers an unhandled runtime exception leading to application crash or potential code execution. The vulnerability affects the software's file parsing mechanism and demonstrates poor input validation practices that have been documented in various cybersecurity frameworks including CWE-248, which specifically addresses "Uncaught Exception" conditions in software applications. The attack vector requires remote exploitation through malicious project file delivery, making it particularly dangerous in environments where industrial systems are connected to corporate networks or the internet.
The technical implementation of this vulnerability stems from inadequate error handling within the InduSoft Web Studio application when processing user-supplied project files. When a maliciously crafted project file is loaded, the software fails to properly validate or sanitize the input data, resulting in an unhandled runtime exception that causes the application to terminate unexpectedly. This behavior aligns with ATT&CK technique T1203, which describes "Exploitation for Client Execution" where adversaries leverage vulnerabilities in software to execute malicious code. The vulnerability's impact extends beyond simple denial of service as it provides a pathway for remote code execution, potentially allowing attackers to gain full control over the affected system. The flaw represents a classic buffer overflow or improper input validation issue that has been commonly exploited in industrial control systems, where the consequences can be severe given the critical infrastructure environments where such software operates.
Organizations utilizing InduSoft Web Studio in industrial environments face substantial operational risks from this vulnerability, as it could lead to unauthorized access to critical control systems and potential disruption of industrial processes. The vulnerability's remote exploitability means that attackers do not require physical access to the system, making it particularly dangerous in connected industrial environments where network segmentation may not be properly implemented. Security professionals should note that this vulnerability affects systems that are often considered air-gapped or isolated, but in reality, many industrial networks maintain connectivity to corporate networks or the internet for maintenance and monitoring purposes. The potential for this vulnerability to be leveraged as part of a broader attack chain makes it particularly concerning, as it could serve as an initial access point for more sophisticated attacks against industrial control systems. Organizations should consider implementing network segmentation, access controls, and regular security assessments to mitigate the risk of exploitation.
The recommended mitigation strategies for this vulnerability include immediate deployment of Schneider Electric's official security patches and updates for InduSoft Web Studio version 8.0 and earlier. Organizations should also implement network-based controls such as firewalls and intrusion detection systems to monitor for suspicious file transfers or access patterns related to project files. Additionally, implementing strict access controls and limiting the ability to load external project files can significantly reduce the attack surface. Security teams should also consider conducting regular vulnerability assessments and penetration testing to identify similar issues within their industrial control system environments. The vulnerability highlights the importance of proper input validation and error handling in industrial software, and organizations should review their software development practices to ensure similar issues are not present in other critical applications. Regular security training for personnel working with industrial control systems is also recommended to help identify and respond to potential exploitation attempts.