CVE-2024-29244 in LBT-T300-mini
Summary
by MITRE • 03/21/2024
Shenzhen Libituo Technology Co., Ltd LBT-T300-mini v1.2.9 was discovered to contain a buffer overflow via the pin_code_3g parameter at /apply.cgi.
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Analysis
by VulDB Data Team • 11/07/2024
The vulnerability identified as CVE-2024-29244 affects the LBT-T300-mini device firmware version 1.2.9 produced by Shenzhen Libituo Technology Co., Ltd. This device represents a network appliance or embedded system that handles configuration requests through the /apply.cgi web interface. The specific flaw manifests within the pin_code_3g parameter processing, where inadequate input validation leads to memory corruption conditions that can be exploited by remote attackers. The buffer overflow vulnerability occurs when the system fails to properly bounds-check user-supplied data before copying it into fixed-size memory buffers, creating opportunities for arbitrary code execution or system instability.
This technical weakness falls under the common weakness enumeration CWE-121, which describes heap-based buffer overflow conditions where insufficient bounds checking allows attackers to write beyond allocated memory boundaries. The vulnerability is particularly concerning because it exists within a web-based administrative interface that likely requires authentication but may be accessible to unauthenticated users depending on the device configuration. The /apply.cgi endpoint suggests this is a configuration application interface where device parameters are processed and applied, making it a critical attack surface for privilege escalation and system compromise.
The operational impact of this vulnerability extends beyond simple denial of service conditions to potentially enable complete system compromise. An attacker could exploit this buffer overflow to execute arbitrary code with the privileges of the web server process, which typically runs with elevated permissions to modify system configurations. The attack vector is remote and requires no special privileges to initiate, making it particularly dangerous in networked environments where such devices are exposed to external networks. Successful exploitation could result in persistent backdoor access, data exfiltration, or the complete takeover of the affected device's operational functions. The vulnerability affects devices that may be deployed in critical infrastructure environments where unauthorized access could lead to significant operational disruptions or security breaches.
Mitigation strategies for CVE-2024-29244 should prioritize immediate firmware updates from the vendor, as this represents a critical security flaw requiring upstream patches. Network segmentation and firewall rules should be implemented to restrict access to the /apply.cgi endpoint to trusted networks only, while disabling unnecessary services and ports that may expose the device to external threats. Regular security audits of embedded systems should include checks for similar buffer overflow conditions in other parameters and endpoints. The vulnerability demonstrates the importance of input validation and proper memory management practices in embedded systems, aligning with ATT&CK technique T1210 for exploitation of remote services. Organizations should also implement intrusion detection systems to monitor for unusual patterns of requests to administrative interfaces and maintain comprehensive network monitoring to detect potential exploitation attempts.