CVE-2024-34201 in CP450
Summary
by MITRE • 05/14/2024
TOTOLINK CP450 v4.1.0cu.747_B20191224 was discovered to contain a stack buffer overflow vulnerability in the getSaveConfig function.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 05/14/2024
The vulnerability identified as CVE-2024-34201 affects TOTOLINK CP450 firmware version 4.1.0cu.747_B20191224 and represents a critical stack buffer overflow condition within the getSaveConfig function. This type of vulnerability falls under the Common Weakness Enumeration category CWE-121, which specifically addresses stack-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations on the stack. The affected device operates within the consumer and small office networking space, making it a potential target for attackers seeking to compromise home and small business network infrastructure.
The technical flaw manifests when the getSaveConfig function processes user-supplied input without adequate validation or length checking, allowing an attacker to supply malicious input that exceeds the allocated buffer size. When this occurs, the excess data overflows into adjacent stack memory, potentially overwriting return addresses, function pointers, or other critical control data. This vulnerability is particularly dangerous because it can be exploited through network-based attacks that do not require physical access to the device, as the function appears to be accessible via web interface or network management protocols. The stack buffer overflow creates opportunities for arbitrary code execution, privilege escalation, or denial of service conditions that could compromise the entire network device.
The operational impact of this vulnerability extends beyond simple device compromise, as it represents a significant threat to network security infrastructure. Attackers could leverage this weakness to gain unauthorized access to the device's administrative functions, potentially enabling them to modify network configurations, redirect traffic, or establish persistent backdoors within the network. The vulnerability's presence in firmware version 4.1.0cu.747_B20191224 suggests this is a long-standing issue that has not been properly addressed in the device's security updates. Network administrators should be particularly concerned as this device could serve as a foothold for lateral movement within corporate networks or as an entry point for more sophisticated attacks targeting connected systems. The vulnerability also aligns with ATT&CK technique T1059.007 for command and control communication, as successful exploitation could enable persistent access and data exfiltration.
Mitigation strategies for CVE-2024-34201 should prioritize immediate firmware updates from TOTOLINK if available, as this represents the most effective defense against the known vulnerability. Network segmentation and access controls should be implemented to limit exposure of affected devices to untrusted networks, while monitoring systems should be deployed to detect anomalous behavior that might indicate exploitation attempts. Network administrators should also consider implementing intrusion detection systems that can identify patterns associated with buffer overflow exploitation attempts, particularly those targeting web application interfaces. The vulnerability demonstrates the importance of regular firmware updates and security assessments for network infrastructure devices, as it represents a classic example of how legacy code vulnerabilities can persist in consumer-grade networking equipment. Organizations should also consider deploying network access control measures to prevent unauthorized access to administrative interfaces, while implementing network monitoring to detect potential exploitation attempts through unusual traffic patterns or access logs.