CVE-2024-23937 in Gecko OS
Summary
by MITRE • 01/31/2025
This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Silicon Labs Gecko OS. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the debug interface. The issue results from the lack of proper validation of a user-supplied string before using it as a format specifier. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the device.
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Analysis
by VulDB Data Team • 07/02/2025
The vulnerability identified as CVE-2024-23937 represents a critical information disclosure flaw within Silicon Labs Gecko OS operating systems. This security weakness resides in the debug interface component of the operating system and demonstrates a classic format string vulnerability that can be exploited by attackers who have network access to the affected devices. The absence of authentication requirements for exploitation significantly increases the attack surface and potential impact of this vulnerability. The flaw specifically manifests when the system fails to properly validate user-supplied strings before utilizing them as format specifiers, creating a dangerous condition where malicious input can be processed without adequate sanitization.
The technical implementation of this vulnerability stems from improper input validation mechanisms within the debug interface functionality. When the Gecko OS processes user-provided data through format string functions, it fails to sanitize or validate the input parameters before using them in printf or similar formatting operations. This allows attackers to inject malicious format specifiers that can trigger unintended behavior within the system. The vulnerability is categorized under CWE-134 which specifically addresses the use of format strings with user-supplied data without proper validation. This weakness creates a pathway for attackers to potentially read memory contents, manipulate program execution flow, or extract sensitive information from the device's memory space.
The operational impact of CVE-2024-23937 extends beyond simple information disclosure, as it provides attackers with the foundation for more sophisticated attacks. The vulnerability can be leveraged in conjunction with other security flaws to achieve arbitrary code execution within the device's context, potentially leading to complete system compromise. This makes the vulnerability particularly dangerous in environments where Silicon Labs Gecko OS devices are deployed, such as IoT networks, embedded systems, and industrial control systems. Attackers can exploit this weakness to gain unauthorized access to sensitive device configurations, cryptographic keys, or other confidential information stored within the system. The lack of authentication requirements means that even unauthenticated network-adjacent attackers can potentially exploit this vulnerability, making it a significant concern for network security administrators.
Mitigation strategies for CVE-2024-23937 should prioritize immediate patching of affected systems with the vendor-provided security updates. Organizations should implement network segmentation to limit access to devices running Gecko OS, particularly those with debug interfaces enabled. The implementation of network access controls and firewall rules can help restrict unauthorized access to affected devices. Additionally, security monitoring should be enhanced to detect unusual activity patterns that might indicate exploitation attempts. System administrators should disable unnecessary debug interfaces and services when not actively needed. The vulnerability's classification under ATT&CK technique T1059.007 for command and scripting interpreter suggests that exploitation may involve command injection attempts, making comprehensive logging and monitoring essential for early detection. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar weaknesses in the system architecture.