CVE-2024-45841 in UD-LT1
Summary
by MITRE • 12/05/2024
Incorrect permission assignment for critical resource issue exists in UD-LT1 firmware Ver.2.1.8 and earlier and UD-LT1/EX firmware Ver.2.1.8 and earlier. If an attacker with the guest account of the affected products accesses a specific file, the information containing credentials may be obtained.
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Analysis
by VulDB Data Team • 12/18/2024
This vulnerability represents a critical permission assignment flaw that affects UD-LT1 and UD-LT1/EX network devices running firmware versions 2.1.8 and earlier. The issue stems from improper access controls that allow guest account users to access sensitive files containing authentication credentials. Such misconfigurations typically fall under the CWE-284 access control weakness category, where insufficient privileges are granted to users who should otherwise be restricted from accessing critical system resources. The vulnerability exists at the firmware level, indicating a fundamental flaw in the device's security architecture that persists across multiple product variants.
The technical exploitation of this vulnerability occurs when an attacker with guest account credentials attempts to access specific files within the device's file system. This allows unauthorized information disclosure that may include stored credentials, configuration data, or other sensitive information that could be used for further attacks. The flaw essentially creates a path for privilege escalation and information gathering that violates fundamental security principles of least privilege and principle of least privilege enforcement. Attackers can leverage this weakness to bypass normal access controls that should prevent guest users from accessing administrative or credential-stored files.
The operational impact of this vulnerability extends beyond simple information disclosure to potentially enable full system compromise. Once credentials are obtained through this weakness, attackers can escalate their privileges and gain unauthorized access to the device's administrative functions. This creates a significant risk for network infrastructure devices where unauthorized access could lead to man-in-the-middle attacks, network disruption, or lateral movement within the network. The vulnerability affects devices that likely operate in enterprise or industrial environments where network security is paramount, making this a high-risk issue that could compromise entire network segments.
Mitigation strategies should focus on immediate firmware updates to versions that address the permission assignment flaw. Organizations should also implement network segmentation to limit guest access to critical systems and enforce strict access control policies. The remediation process should include thorough network scanning to identify all affected devices and ensure proper privilege separation. Security monitoring should be enhanced to detect unauthorized access attempts to sensitive files. This vulnerability aligns with ATT&CK technique T1566 for credential access and T1078 for valid accounts, indicating that the attack chain could involve both credential harvesting and legitimate account exploitation. Regular security assessments and firmware update policies should be implemented to prevent similar issues from arising in future deployments.