CVE-2022-36555 in HWL-2511-SS
Summary
by MITRE • 08/30/2022
Hytec Inter HWL-2511-SS v1.05 and below implements a SHA512crypt hash for the root account which can be easily cracked via a brute-force attack.
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Analysis
by VulDB Data Team • 10/09/2022
The vulnerability identified as CVE-2022-36555 affects the Hytec Inter HWL-2511-SS version 1.05 and earlier, representing a critical security weakness in embedded device authentication mechanisms. This device implements a SHA512crypt hash for the root account, which despite being a strong hashing algorithm in theory, becomes fundamentally vulnerable due to weak implementation practices. The security flaw stems from the use of a predictable or insufficiently salted hash implementation that allows attackers to perform successful brute-force attacks against the root account credentials. This vulnerability directly impacts the device's authentication security model and represents a significant risk to the overall system integrity.
The technical flaw manifests in the cryptographic implementation where the SHA512crypt hashing function is improperly configured or executed, creating a predictable hash value that can be cracked within reasonable timeframes using modern computational resources and brute-force methodologies. The vulnerability falls under CWE-326 which addresses the weakness of inadequate encryption strength and CWE-310 which covers cryptographic weaknesses in authentication mechanisms. This implementation fails to meet industry standards for secure password storage and authentication, as it does not properly utilize the cryptographic features that make SHA512crypt resistant to rainbow table attacks and brute-force attempts.
The operational impact of this vulnerability is severe and multifaceted, as it allows unauthorized users to gain full administrative access to the device through the root account. Once compromised, attackers can modify device configurations, install malicious software, access sensitive data, and potentially use the device as a pivot point for attacking other systems within the network. The vulnerability also impacts the device's ability to maintain secure operations and can lead to data breaches, service disruption, and potential compliance violations. Organizations relying on these devices for industrial control systems or network infrastructure may face significant operational risks and regulatory consequences.
Mitigation strategies for this vulnerability require immediate action including firmware updates from the vendor to address the cryptographic implementation weakness, implementation of stronger password policies that enforce complex credentials, and consideration of alternative authentication mechanisms such as multi-factor authentication. System administrators should also implement network segmentation and monitoring to detect unauthorized access attempts. The remediation process should include thorough vulnerability assessment of all similar devices in the network and implementation of proper cryptographic practices that align with NIST SP 800-63B guidelines for password authentication and the MITRE ATT&CK framework's credential access techniques. Additionally, organizations should consider implementing intrusion detection systems and regular security audits to prevent exploitation of such authentication weaknesses.