CVE-2012-3815 in Winlog Pro
Summary
by MITRE
Buffer overflow in RunTime.exe in Sielco Sistemi Winlog Pro SCADA before 2.07.18 and Winlog Lite SCADA before 2.07.18 allows remote attackers to execute arbitrary code via a crafted packet to TCP port 46824. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 08/02/2025
The vulnerability identified as CVE-2012-3815 represents a critical buffer overflow flaw in the RunTime.exe component of Sielco Sistemi's Winlog Pro and Winlog Lite SCADA systems. This vulnerability affects versions prior to 2.07.18 of both software products, creating a significant security risk for industrial control systems that rely on these platforms. The flaw manifests specifically when the system processes incoming packets on TCP port 46824, which serves as the primary communication channel for these SCADA applications. The buffer overflow occurs during the handling of malformed or specially crafted network packets, allowing malicious actors to exploit the vulnerability from remote locations without requiring physical access to the system infrastructure.
The technical nature of this vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations. The flaw stems from inadequate input validation within the RunTime.exe process that manages SCADA communications, specifically when processing network data received on the designated port. Attackers can craft malicious packets that exceed the allocated buffer space, causing memory corruption that can be leveraged to execute arbitrary code with the privileges of the running process. This remote code execution capability represents a severe threat to operational technology environments where SCADA systems control critical infrastructure components such as industrial processes, power generation, water treatment facilities, and manufacturing operations.
The operational impact of this vulnerability extends beyond simple remote code execution, creating potential for complete system compromise and disruption of critical operations. Industrial control systems that utilize Sielco Sistemi SCADA products become vulnerable to attacks that could result in unauthorized process manipulation, data corruption, or complete system outages. The remote accessibility of this vulnerability means that attackers can exploit it from anywhere on the internet without requiring insider knowledge or physical presence at the target facility. This characteristic makes the vulnerability particularly dangerous for critical infrastructure sectors where SCADA systems operate in potentially isolated network environments with limited security monitoring capabilities. The attack surface is further expanded by the fact that these systems often operate continuously without regular patching cycles, making exploitation more likely to go undetected for extended periods.
Organizations utilizing affected Sielco Sistemi SCADA products should implement immediate mitigations including network segmentation to isolate the vulnerable systems from general network access, firewall rules to restrict access to TCP port 46824, and network monitoring to detect anomalous packet patterns. The most effective long-term solution involves upgrading to versions 2.07.18 or later where the buffer overflow vulnerability has been addressed through proper bounds checking and input validation mechanisms. Security teams should also consider implementing intrusion detection systems specifically configured to monitor for patterns consistent with this vulnerability exploitation attempts. According to ATT&CK framework technique T1203, adversaries may leverage such vulnerabilities to gain initial access to systems, while T1059 covers the execution of malicious code through command-line interfaces. The vulnerability also maps to ATT&CK technique T1068 which addresses local privilege escalation opportunities that may arise from buffer overflow exploitation, though in this case the remote nature of the vulnerability means attackers can achieve system compromise without local access. Organizations should also consider the broader implications for industrial cybersecurity frameworks and ensure their incident response procedures account for potential exploitation of such SCADA-specific vulnerabilities.