CVE-2024-21787 in BMRA Software
Summary
by MITRE • 08/14/2024
Inadequate encryption strength for some BMRA software before version 22.08 may allow an authenticated user to potentially enable escalation of privilege via local access.
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Analysis
by VulDB Data Team • 08/14/2024
The vulnerability identified as CVE-2024-21787 affects BMRA software versions prior to 22.08 and represents a critical weakness in cryptographic implementation that could enable privilege escalation through local access. This issue stems from inadequate encryption strength within the software's authentication and authorization mechanisms, creating a pathway for malicious actors to exploit local system access and elevate their privileges. The vulnerability specifically targets the encryption algorithms and key management processes used by the software, potentially allowing an authenticated user with local access to bypass security controls and gain elevated system privileges.
The technical flaw manifests in the software's insufficient cryptographic strength, which falls below industry standards and regulatory requirements for secure communications and data protection. This weakness typically involves the use of outdated or weak encryption algorithms, insufficient key lengths, or improper implementation of cryptographic protocols that make the system vulnerable to various attacks including key recovery, brute force attempts, and cryptographic analysis. The vulnerability aligns with CWE-327 which addresses the use of weak cryptographic algorithms, and CWE-326 which covers the use of insecure or weak cryptography. Attackers leveraging this vulnerability can potentially exploit the weak encryption to decrypt sensitive information, manipulate authentication tokens, or bypass access controls that should prevent privilege escalation.
The operational impact of CVE-2024-21787 extends beyond simple privilege escalation, as it represents a fundamental weakness in the software's security architecture that could lead to complete system compromise. An authenticated user with local access can potentially exploit this vulnerability to gain administrative privileges, access restricted system resources, and manipulate critical system functions. This creates a significant risk for organizations relying on BMRA software, particularly in environments where local access controls are not properly enforced or where users may have legitimate local access but should not possess administrative privileges. The vulnerability creates a persistent threat vector that could be exploited by both internal and external attackers who can gain local access to affected systems, potentially leading to data breaches, system corruption, or complete system takeover.
Mitigation strategies for CVE-2024-21787 should prioritize immediate software updates to version 22.08 or later, which contain the necessary cryptographic improvements and security patches. Organizations must implement comprehensive vulnerability management processes that include regular security assessments, encryption strength audits, and continuous monitoring of system configurations. The remediation approach should also include strengthening local access controls, implementing proper user privilege management, and conducting regular security training for system administrators. Security professionals should consider implementing the ATT&CK framework's privilege escalation techniques to better understand and defend against potential exploitation vectors. Additionally, organizations should perform cryptographic strength assessments, ensure compliance with NIST SP 800-57 guidelines for key management, and establish incident response procedures specifically designed to address cryptographic vulnerabilities. The vulnerability also highlights the importance of maintaining up-to-date security patches and implementing defense-in-depth strategies that include network segmentation, access logging, and continuous monitoring to detect and prevent exploitation attempts.