CVE-2011-4037 in Winlog PRO
Summary
by MITRE
Buffer overflow in Sielco Sistemi Winlog PRO before 2.07.09 and Winlog Lite before 2.07.09 allows user-assisted remote attackers to execute arbitrary code via invalid data in unspecified fields of a project file.
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Analysis
by VulDB Data Team • 04/08/2017
The vulnerability identified as CVE-2011-4037 represents a critical buffer overflow flaw affecting Sielco Sistemi Winlog PRO and Winlog Lite industrial automation software versions prior to 2.07.09. This issue falls under the CWE-121 buffer overflow category, where insufficient bounds checking allows attackers to write beyond allocated memory regions. The vulnerability specifically manifests when processing project files containing malformed data in unspecified fields, creating a potential entry point for malicious actors to execute arbitrary code on affected systems.
The technical implementation of this vulnerability exploits the software's failure to properly validate input data within project file structures. When the application processes these malformed project files, it does not adequately sanitize or limit the size of data being read into fixed-length buffers, leading to memory corruption that can be leveraged for code execution. The user-assisted nature of this attack means that an attacker must convince a legitimate user to open a specially crafted malicious project file, but once executed, the vulnerability allows for complete system compromise. This type of attack vector aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as successful exploitation would enable arbitrary code execution.
The operational impact of this vulnerability extends significantly within industrial control system environments where Winlog PRO and Winlog Lite are commonly deployed. These applications are used for SCADA (Supervisory Control and Data Acquisition) and industrial automation processes, making them prime targets for sophisticated attacks that could potentially disrupt critical infrastructure operations. The vulnerability's presence in industrial software increases risk to operational technology environments, where system downtime or data manipulation could result in significant financial losses or safety hazards. Organizations relying on these systems face potential compromise of their entire control infrastructure, as the buffer overflow could be exploited to gain elevated privileges and persist within the network.
Mitigation strategies for CVE-2011-4037 should prioritize immediate software updates to versions 2.07.09 or later, which contain the necessary patches addressing the buffer overflow conditions. Network segmentation and access controls should be implemented to limit exposure of affected systems, while regular security assessments should be conducted to identify similar vulnerabilities in industrial control systems. Additionally, implementing application whitelisting policies and restricting user privileges when opening project files can reduce the attack surface. Organizations should also consider deploying intrusion detection systems specifically configured to monitor for suspicious file handling activities and maintain comprehensive backup and recovery procedures to ensure business continuity in case of successful exploitation. The vulnerability demonstrates the importance of secure coding practices and input validation in industrial software environments where security is often secondary to functionality.