CVE-2011-1567 in IGSS
Summary
by MITRE
Multiple stack-based buffer overflows in IGSSdataServer.exe 9.00.00.11063 and earlier in 7-Technologies Interactive Graphical SCADA System (IGSS) allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted (1) ListAll, (2) Write File, (3) ReadFile, (4) Delete, (5) RenameFile, and (6) FileInfo commands in an 0xd opcode; (7) the Add, (8) ReadFile, (9) Write File, (10) Rename, (11) Delete, and (12) Add commands in an RMS report templates (0x7) opcode; and (13) 0x4 command in an STDREP request (0x8) opcode to TCP port 12401.
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Analysis
by VulDB Data Team • 05/15/2025
The vulnerability identified as CVE-2011-1567 represents a critical stack-based buffer overflow issue affecting the IGSSdataServer.exe component within the 7-Technologies Interactive Graphical SCADA System version 9.00.00.11063 and earlier. This flaw exists within the SCADA system's communication protocol implementation, specifically targeting the server's handling of various file and directory operations through TCP port 12401. The vulnerability stems from inadequate input validation and memory management practices in the server's response handling mechanisms, creating exploitable conditions that can be triggered remotely by malicious actors.
The technical exploitation occurs through multiple command sequences that leverage different opcodes to deliver malicious payloads. The primary attack vectors include the 0xd opcode commands such as ListAll, Write File, ReadFile, Delete, RenameFile, and FileInfo operations, which can trigger buffer overflows when processing specially crafted input data. Additionally, the vulnerability extends to RMS report templates through the 0x7 opcode with Add, ReadFile, Write File, Rename, Delete, and Add commands, and further includes the 0x4 command within STDREP requests using the 0x8 opcode. These multiple attack surfaces significantly increase the exploitability of the vulnerability across different operational scenarios within the SCADA environment.
The operational impact of this vulnerability extends beyond simple denial of service conditions to potentially enabling remote code execution, making it particularly dangerous for industrial control systems. When exploited, these buffer overflows can cause the IGSSdataServer.exe process to crash and terminate unexpectedly, leading to complete system unavailability and potential operational disruptions. The remote exploitation capability means that attackers can compromise these systems from external networks without requiring physical access, creating significant security risks for critical infrastructure environments that rely on SCADA systems for operational control.
Security professionals should note that this vulnerability aligns with CWE-121 Stack-based Buffer Overflow, which is categorized under the broader weakness classification for buffer overflow conditions that occur in stack memory regions. The attack patterns associated with this vulnerability map to several ATT&CK techniques including T1203 Exploitation for Client Execution and T1499 Endpoint Denial of Service, with potential for lateral movement if the system is not properly isolated. Organizations operating 7-Technologies IGSS systems should prioritize immediate patching and network segmentation to protect against exploitation attempts, while also implementing monitoring for suspicious traffic patterns on TCP port 12401 that may indicate exploitation attempts against these specific command sequences.
The vulnerability demonstrates the critical importance of input validation in industrial control systems, where memory corruption flaws can have severe operational consequences. Given that SCADA systems often operate in environments where availability and reliability are paramount, the potential for both denial of service and arbitrary code execution creates a significant risk to operational continuity. Proper security hardening measures including network firewalls, intrusion detection systems, and regular security assessments should be implemented alongside the necessary software patches to mitigate the risks associated with this vulnerability across industrial environments that utilize 7-Technologies IGSS platforms.