CVE-2011-10032 in ForceControl
Summary
by MITRE • 08/30/2025
Sunway ForceControl version 6.1 SP3 and earlier contains a stack-based buffer overflow vulnerability in the SNMP NetDBServer service, which listens on TCP port 2001. The flaw is triggered when the service receives a specially crafted packet using opcode 0x57 with an overly long payload. Due to improper bounds checking during packet parsing, attacker-controlled data overwrites the Structured Exception Handler (SEH), allowing arbitrary code execution in the context of the service. This vulnerability can be exploited remotely without authentication and may lead to full system compromise on affected Windows hosts.
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Analysis
by VulDB Data Team • 08/30/2025
The Sunway ForceControl SNMP NetDBServer service represents a critical security weakness in network monitoring infrastructure that affects versions 6.1 SP3 and earlier of the software. This vulnerability exists within a service that operates continuously on TCP port 2001, making it a persistent target for remote exploitation. The service's design flaw stems from inadequate input validation mechanisms during packet processing, specifically when handling opcode 0x57 communications. The SNMP NetDBServer service functions as a network database server component that manages network device information and monitoring data, making it a valuable target for attackers seeking unauthorized access to network infrastructure.
The technical implementation of this stack-based buffer overflow occurs when the service processes a maliciously crafted packet containing opcode 0x57 with an excessive payload length. The vulnerability manifests from the absence of proper bounds checking during the parsing routine, allowing attacker-controlled data to overflow the allocated stack buffer. This overflow specifically targets the Structured Exception Handler (SEH) chain, which serves as Windows' exception handling mechanism. When the buffer overflow occurs, it overwrites the SEH record pointers that control how the application handles exceptions, enabling attackers to redirect program execution flow. The vulnerability is classified under CWE-121 as a stack-based buffer overflow, which represents a fundamental memory corruption flaw that has been consistently exploited across various software platforms.
The operational impact of this vulnerability extends beyond simple remote code execution, creating a pathway for full system compromise on affected Windows hosts. Since the service operates with elevated privileges and does not require authentication for exploitation, attackers can achieve unauthorized access without presenting credentials. The vulnerability's remote exploitability means that threat actors can target systems from outside the network perimeter, making it particularly dangerous for organizations with exposed network services. The nature of the SEH overwrite allows for sophisticated exploitation techniques including return-oriented programming (ROP) chains and direct instruction pointer manipulation, which can bypass modern security protections like DEP and ASLR. This vulnerability aligns with ATT&CK technique T1055.001 for process injection and T1071.004 for application layer protocol usage, demonstrating how network services can become attack vectors for broader system compromise.
Mitigation strategies for this vulnerability require immediate patching of the affected Sunway ForceControl software to version 6.1 SP4 or later, which includes proper bounds checking and input validation. Network segmentation and firewall rules should be implemented to block TCP port 2001 access from untrusted networks, reducing the attack surface. System administrators should consider disabling the SNMP NetDBServer service entirely if it is not required for network operations, as this eliminates the attack vector completely. Additional protective measures include implementing network intrusion detection systems to monitor for suspicious opcode 0x57 traffic patterns and deploying application whitelisting solutions to restrict execution of unauthorized code. Regular vulnerability assessments should be conducted to identify similar buffer overflow conditions in other network services, as this represents a common class of vulnerability that has been exploited in numerous security incidents throughout the industry. Organizations should also implement proper system hardening procedures that include disabling unnecessary network services and maintaining up-to-date security patches across all network infrastructure components.