CVE-2012-0242 in WebAccess
Summary
by MITRE
Format string vulnerability in Advantech/BroadWin WebAccess before 7.0 allows remote attackers to execute arbitrary code via format string specifiers in a message string.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 07/03/2025
The CVE-2012-0242 vulnerability represents a critical format string vulnerability discovered in Advantech/BroadWin WebAccess software versions prior to 7.0. This flaw exists within the application's handling of message strings and provides remote attackers with the capability to execute arbitrary code on affected systems. The vulnerability stems from improper input validation and sanitization of user-supplied data that is subsequently processed through format string functions without adequate protection mechanisms. Such vulnerabilities are particularly dangerous because they can be exploited to manipulate the program's execution flow and potentially gain complete system control.
The technical implementation of this vulnerability occurs when the WebAccess application processes message strings that contain format specifiers without proper validation or sanitization. When an attacker crafts a malicious message string containing format string specifiers such as %s, %d, or %x, the application's improper handling of these inputs can lead to stack-based buffer overflows or information disclosure. The vulnerability specifically affects the software's logging or messaging functions where user-controllable data is directly passed to format string functions like printf or sprintf without appropriate validation. This creates opportunities for attackers to either overwrite critical memory locations or extract sensitive information from the application's memory space, ultimately enabling arbitrary code execution. According to CWE-134, this vulnerability maps directly to the weakness of using user-supplied data in format string operations without proper validation, making it a classic example of insecure coding practices that violates fundamental security principles.
The operational impact of CVE-2012-0242 is severe for industrial control systems and SCADA environments where Advantech/BroadWin WebAccess is deployed. Organizations using affected versions of the software face significant risks including unauthorized system access, data manipulation, and potential disruption of critical infrastructure operations. The remote exploit capability means attackers can target these systems from external networks without requiring physical access or local credentials, making the attack surface particularly concerning for operational technology environments. Attackers can leverage this vulnerability to gain persistent access to industrial control systems, potentially leading to cascading failures in manufacturing processes, power grid operations, or other critical infrastructure components. The vulnerability affects the integrity and availability of industrial control systems, as demonstrated by similar format string vulnerabilities in other industrial software platforms. This type of vulnerability directly impacts the principles of cybersecurity frameworks such as those defined by NIST SP 800-82 for industrial control systems, where proper input validation and secure coding practices are essential for maintaining system integrity.
Mitigation strategies for CVE-2012-0242 must focus on immediate software updates and comprehensive security hardening measures. Organizations should prioritize upgrading to Advantech/BroadWin WebAccess version 7.0 or later, which contains the necessary patches to address the format string vulnerability. Additionally, network segmentation and access controls should be implemented to limit exposure of affected systems to external threats, following ATT&CK framework recommendations for defending against remote code execution techniques. Input validation mechanisms should be strengthened to prevent malicious format specifiers from reaching the vulnerable code paths, and security monitoring should be enhanced to detect potential exploitation attempts. System administrators should also consider implementing intrusion detection systems specifically configured to identify patterns associated with format string exploitation attempts, as outlined in various cybersecurity best practices and guidelines from organizations such as the SANS Institute and MITRE ATT&CK framework. Regular security assessments and penetration testing should be conducted to ensure that similar vulnerabilities are not present in other components of the industrial control system environment.