CVE-2016-5066 in GX 440
Summary
by MITRE
Sierra Wireless GX 440 devices with ALEOS firmware 4.3.2 have weak passwords for admin, rauser, sconsole, and user.
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Analysis
by VulDB Data Team • 08/28/2020
The CVE-2016-5066 vulnerability affects Sierra Wireless GX 440 devices running ALEOS firmware version 4.3.2, presenting a critical authentication weakness that compromises the security posture of these industrial communication devices. This vulnerability stems from the use of default or weak credentials across multiple administrative and user accounts, including admin, rauser, sconsole, and user accounts. The flaw represents a fundamental failure in secure configuration management and demonstrates poor adherence to security best practices in embedded device deployment.
The technical implementation of this vulnerability involves hardcoded or predictable default passwords that remain unchanged in the field deployment. These weak credentials provide unauthorized parties with direct access to device management interfaces, enabling them to modify configurations, access sensitive data, and potentially disrupt critical communication services. The vulnerability aligns with CWE-798, which addresses the use of hard-coded credentials, and CWE-312, concerning the exposure of sensitive information through cleartext storage or transmission. The affected accounts provide varying levels of access control, with the admin account typically offering full administrative privileges while other accounts may provide partial access to specific subsystems or functionalities.
The operational impact of this vulnerability extends beyond simple unauthorized access, as these devices are commonly deployed in industrial environments where they serve as critical communication nodes for remote monitoring and control systems. Attackers who exploit this weakness can potentially disrupt industrial processes, access proprietary data, or use the compromised devices as entry points for broader network infiltration. The vulnerability particularly affects the ATT&CK technique T1078, which covers valid accounts, and T1566, which encompasses phishing and social engineering attacks that can leverage these default credentials. Organizations using these devices face increased risk of supply chain attacks, insider threats, and lateral movement within their networks, especially when these devices are connected to operational technology networks.
Mitigation strategies should include immediate credential rotation for all affected accounts, implementation of strong password policies, and regular security audits of deployed devices. Network segmentation and access control measures should be implemented to limit the potential impact of credential compromise. Organizations should also consider deploying device management solutions that can automatically detect and remediate weak credential configurations. The vulnerability highlights the importance of secure device lifecycle management, including proper initial configuration, regular security assessments, and adherence to industry standards such as NIST SP 800-125 for secure configuration of embedded systems. Additionally, vendors should implement robust credential management practices and provide clear guidance for secure device deployment to prevent similar vulnerabilities in future deployments.