CVE-2012-4716 in 702-W Industrial Wireless Access Point
Summary
by MITRE
N-Tron 702-W Industrial Wireless Access Point devices use the same (1) SSH and (2) HTTPS private keys across different customers' installations, which makes it easier for remote attackers to defeat cryptographic protection mechanisms by leveraging knowledge of a key.
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Analysis
by VulDB Data Team • 04/06/2019
The vulnerability identified as CVE-2012-4716 affects N-Tron 702-W Industrial Wireless Access Point devices, representing a critical flaw in cryptographic key management that undermines the security of industrial network infrastructure. This issue stems from the improper implementation of security protocols where the same private keys are deployed across multiple customer installations, creating a fundamental weakness in the device's authentication and encryption mechanisms. The flaw directly impacts both SSH and HTTPS services, which are essential for secure remote management and data transmission in industrial environments. The vulnerability exposes devices to significant risk as attackers can exploit the shared cryptographic keys to impersonate legitimate systems, intercept communications, or gain unauthorized access to critical network resources.
From a technical perspective, this vulnerability constitutes a violation of the principle of unique key generation and proper key distribution practices that are fundamental to cryptographic security. The shared private keys across different customer installations create a scenario where compromising one device's key immediately compromises the security of all devices using the same key. This weakness aligns with CWE-326, which addresses inadequate encryption strength, and CWE-327, which covers the use of weak or predictable cryptographic algorithms. The flaw also represents a significant deviation from industry best practices outlined in NIST SP 800-57, which emphasizes the importance of unique key generation and proper key lifecycle management. The vulnerability's impact extends beyond simple credential theft as it fundamentally undermines the cryptographic protection mechanisms that are supposed to ensure confidentiality, integrity, and authentication in network communications.
The operational impact of CVE-2012-4716 in industrial settings is particularly severe given the critical nature of wireless access points in industrial control systems and the potential for cascading security failures. Attackers leveraging this vulnerability can execute various malicious activities including man-in-the-middle attacks, session hijacking, and unauthorized administrative access to multiple customer networks simultaneously. The vulnerability enables adversaries to bypass authentication mechanisms and potentially gain access to sensitive operational data, control system configurations, or even manipulate industrial processes through compromised access points. This threat is especially concerning in industrial environments where network segmentation and security isolation are critical for maintaining operational technology security. The ATT&CK framework categorizes this vulnerability under T1566, which covers credential harvesting through social engineering, and T1071, which addresses application layer protocols, as attackers can exploit the shared keys to establish persistent access and move laterally within networks. The vulnerability also maps to T1046, network service scanning, as attackers can identify multiple devices using the same keys and exploit this weakness systematically.
Organizations should implement immediate mitigations including replacing the shared private keys with unique, properly generated cryptographic keys for each device installation, ensuring that key distribution follows established security protocols. The implementation of certificate management systems and regular key rotation practices becomes essential to prevent similar vulnerabilities. Network segmentation strategies should be enhanced to isolate critical industrial systems from less secure network segments, while continuous monitoring of network communications can help detect unauthorized access attempts. Additionally, device firmware updates should be prioritized to address the underlying implementation flaws, and comprehensive security audits should be conducted to identify other instances of shared cryptographic resources across the industrial network infrastructure. The vulnerability highlights the importance of following security standards such as ISO/IEC 27001 for information security management and NIST's Cybersecurity Framework to establish robust security controls for industrial environments.