CVE-2022-1701 in SMA1000
Summary
by MITRE • 05/14/2022
SonicWall SMA1000 series firmware 12.4.0, 12.4.1-02965 and earlier versions uses a shared and hard-coded encryption key to store data.
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Analysis
by VulDB Data Team • 05/18/2022
The SonicWall SMA1000 series appliances represent a critical class of network security devices that serve as secure access gateways for remote users and organizations. These appliances operate as part of the SonicWall Secure Remote Access solution, providing SSL VPN services and remote network access capabilities. The vulnerability in question affects firmware versions 12.4.0 through 12.4.1-02965, indicating a specific regression or flaw introduced in the software development lifecycle that impacts the cryptographic security mechanisms of these devices. This vulnerability specifically targets the encryption implementation used for data storage within the appliance's memory systems, creating a fundamental weakness in the device's security architecture.
The technical flaw manifests through the use of a shared and hard-coded encryption key that is embedded within the firmware itself. This approach violates fundamental cryptographic security principles and represents a classic example of poor key management practices. The hard-coded key means that every device running the affected firmware versions shares identical encryption parameters, eliminating the cryptographic randomness that should be present in secure systems. This vulnerability directly maps to CWE-327, which addresses the use of a broken or weak cryptographic algorithm, and CWE-321, which covers the use of hard-coded cryptographic keys. The shared nature of this key also aligns with CWE-310, which deals with cryptographic issues related to key management and generation.
The operational impact of this vulnerability is severe and far-reaching for organizations relying on these appliances. An attacker who gains access to one device with this hard-coded key can potentially decrypt data stored on any other device running the same firmware version, effectively breaking the cryptographic isolation between different deployments. This creates a massive attack surface where a single compromise can lead to widespread data exposure across multiple organizations. The vulnerability enables several attack vectors including data exfiltration, credential theft, and potential lateral movement within networks where these appliances are deployed. According to ATT&CK framework, this vulnerability could be leveraged under technique T1552.001 for credential access, T1071.004 for application layer protocol, and T1041 for exfiltration.
Organizations must implement immediate mitigation strategies to address this vulnerability. The primary recommendation involves upgrading to firmware versions that contain the cryptographic key fix, specifically versions beyond the affected 12.4.1-02965 release. Network administrators should also implement additional monitoring and logging of access patterns to detect potential unauthorized access attempts. The vulnerability highlights the importance of proper key management practices and the dangers of embedded cryptographic parameters that should never be hardcoded in production systems. Security teams should conduct comprehensive assessments of their remote access infrastructure and consider implementing additional security controls such as network segmentation, enhanced authentication mechanisms, and regular security audits. The incident underscores the critical need for maintaining updated firmware and implementing robust security practices throughout the device lifecycle.