CVE-2012-3032 in SIMATIC PCS7
Summary
by MITRE
SQL injection vulnerability in WebNavigator in Siemens WinCC 7.0 SP3 and earlier, as used in SIMATIC PCS7 and other products, allows remote attackers to execute arbitrary SQL commands via a crafted SOAP message.
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Analysis
by VulDB Data Team • 12/13/2021
The vulnerability identified as CVE-2012-3032 represents a critical SQL injection flaw within Siemens WinCC 7.0 SP3 and earlier versions of the WebNavigator component. This issue affects Siemens SIMATIC PCS7 and other products that utilize this web-based interface for process control and monitoring. The vulnerability stems from insufficient input validation mechanisms within the SOAP message processing functionality of the WebNavigator module, creating an exploitable pathway for malicious actors to inject arbitrary SQL commands into the underlying database system.
The technical nature of this vulnerability aligns with CWE-89, which specifically addresses SQL injection weaknesses in software applications. The flaw occurs when the WebNavigator component fails to properly sanitize or escape user-supplied input contained within SOAP messages before processing them through database queries. Attackers can craft malicious SOAP requests that contain SQL payload elements, which are then executed against the backend database without proper validation. This allows unauthorized individuals to manipulate database operations, potentially gaining access to sensitive operational data, modifying critical process information, or executing destructive commands against the industrial control systems.
The operational impact of this vulnerability extends beyond typical information technology environments due to the industrial control systems context. Remote attackers who successfully exploit this vulnerability can compromise the integrity and confidentiality of process control data, potentially affecting production processes, safety systems, and overall operational security. The attack vector through SOAP messages means that exploitation can occur over network connections without requiring physical access to the systems, making it particularly dangerous in industrial environments where network segmentation may be limited. This vulnerability undermines the fundamental security assumptions of industrial control systems, potentially enabling attackers to disrupt operations or gain unauthorized access to critical infrastructure components.
Organizations utilizing affected Siemens products should implement immediate mitigations including applying the vendor-provided security patches and updates, implementing network segmentation to restrict access to the WebNavigator interface, and deploying intrusion detection systems to monitor for suspicious SOAP message patterns. Additional defensive measures should include disabling unnecessary web services, implementing strict input validation at network boundaries, and conducting comprehensive security assessments of industrial control system environments. The vulnerability highlights the importance of addressing security concerns in industrial control systems through proper secure coding practices and regular security updates, as outlined in the ATT&CK framework's methodology for industrial control system attacks. Organizations should also consider implementing zero-trust network architectures and regular security testing to prevent similar vulnerabilities from being exploited in operational technology environments.