CVE-2011-4039 in Dream Report
Summary
by MITRE
Invensys Wonderware HMI Reports 3.42.835.0304 and earlier, as used in Ocean Data Systems Dream Report before 4.0 and other products, allows user-assisted remote attackers to execute arbitrary code via a malformed file that triggers a "write access violation."
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Analysis
by VulDB Data Team • 04/10/2017
The vulnerability identified as CVE-2011-4039 represents a critical buffer overflow condition affecting Invensys Wonderware HMI Reports version 3.42.835.0304 and earlier installations, along with related products including Ocean Data Systems Dream Report before version 4.0. This flaw exists within the file processing functionality of these industrial automation reporting tools that are commonly deployed in operational technology environments. The vulnerability stems from insufficient input validation mechanisms when handling specially crafted files, creating opportunities for malicious actors to exploit the system through remote code execution. The specific nature of the flaw manifests as a write access violation during file parsing operations, indicating that the application fails to properly manage memory boundaries when processing malformed input data. This type of vulnerability falls under the CWE-121 category of stack-based buffer overflow, where insufficient bounds checking allows attackers to overwrite adjacent memory locations. The attack vector requires user-assisted remote exploitation, meaning that an attacker must convince a user to open a maliciously crafted file, though the subsequent code execution occurs with the privileges of the vulnerable application. This vulnerability is particularly concerning in industrial control systems environments where these reporting tools are often used to process sensitive operational data and generate reports for system monitoring and analysis. The impact extends beyond simple code execution as the compromised system could potentially allow attackers to gain persistent access to industrial networks, manipulate operational data, or disrupt critical processes. According to ATT&CK framework, this vulnerability maps to T1059.007 for command and scripting interpreter and T1566 for malicious file execution, representing the attack paths that adversaries would leverage to exploit this weakness. The vulnerability demonstrates the ongoing challenge of securing industrial control system applications, where legacy software components often lack modern security hardening practices. Organizations using these systems face significant risk as the exploitation can lead to complete system compromise and potential operational technology disruptions. The vulnerability affects not only the directly mentioned products but also any other systems that incorporate the vulnerable Wonderware HMI Reports components, highlighting the widespread potential impact across industrial automation ecosystems. Security researchers have noted that such buffer overflow vulnerabilities in industrial software often remain unpatched for extended periods due to the operational constraints of industrial environments, making these systems particularly attractive targets for nation-state actors and advanced persistent threat groups. The exploitation of this vulnerability requires minimal user interaction, making it an attractive target for social engineering campaigns targeting industrial operators and system administrators who may inadvertently open malicious files. The write access violation indicates that the vulnerability allows attackers to not only execute code but also potentially corrupt memory structures, leading to system instability or complete system compromise. This type of vulnerability aligns with the ATT&CK technique T1070.004 for indicator removal on host, as exploited systems may be used to establish persistent backdoors or remove forensic evidence. Organizations should implement comprehensive patch management programs specifically targeting industrial control system components, as the affected software versions are no longer supported by vendors. The vulnerability underscores the importance of network segmentation and access controls in industrial environments, as successful exploitation could provide attackers with elevated privileges within operational technology networks. Security professionals should consider implementing application whitelisting policies and monitoring for unusual file processing activities that could indicate exploitation attempts. The flaw represents a classic example of how industrial control system software vulnerabilities can be leveraged for broader network infiltration, as these systems often serve as entry points for attackers seeking to move laterally within industrial networks. Organizations should also conduct thorough vulnerability assessments of their operational technology environments to identify other potentially vulnerable components that may share similar architectural weaknesses with the affected Wonderware products. The vulnerability's classification as a remote code execution flaw makes it particularly dangerous in environments where industrial systems are connected to enterprise networks, as it could enable attackers to pivot from the operational technology domain into corporate information technology systems. Proper security awareness training for industrial operators is essential to prevent successful exploitation through social engineering tactics that rely on user interaction with malicious files.