The vulnerability identified as CVE-2024-33820 affects the Totolink AC1200 Wireless Dual Band Gigabit Router (A3002R_V4) running firmware version V4.0.0-B20230531.1404. This vulnerability allows for a buffer overflow through the formWlEncrypt function of the boa server. Specifically, the length of the wlan_ssid field can trigger this overflow, leading to significant security concerns.
With a CVSS score of 7.5, this vulnerability is classified as high severity. The potential risks are considerable, as attackers may leverage this vulnerability to compromise the router's functionality, leading to unauthorized access to sensitive information and disruption of services.
Currently, there are no public exploits confirmed for this vulnerability, but organizations using the affected firmware should prioritize patching immediately. The urgency stems from the vulnerability's high exploitability and the potential impact on confidentiality, integrity, and availability.
Organizations should address this vulnerability in their patch management processes to mitigate the risk of exploitation.
Vulnerability Details
CVE-2024-33820 affects the Totolink AC1200 router, specifically its firmware version V4.0.0-B20230531.1404. The vulnerability arises due to a buffer overflow in the formWlEncrypt function, which can be exploited through the wlan_ssid field. The official CVSS score is 7.5, indicating a high level of severity.
The affected product is the a3002r_firmware, and the vulnerability classification is CWE-120. This classification indicates the nature of the buffer overflow issue, which can lead to various impacts on the system.
The vulnerability was published on May 1, 2024, and has been analyzed thoroughly to understand its implications and potential remediations.
Technical Analysis
The root cause of CVE-2024-33820 is a buffer overflow vulnerability that can be triggered by an attacker manipulating the wlan_ssid field. The attack vector is classified as adjacent network, meaning the attacker must be on the same local network to exploit this vulnerability. The attack complexity is high, indicating that successful exploitation may require advanced skills or specific conditions.
No privileges are required to exploit this vulnerability, and user interaction is not necessary. If successfully exploited, the impact on confidentiality, integrity, and availability is classified as high, posing a severe risk to affected systems.
Risk & Impact Analysis
The risk to organizations includes potential unauthorized access to sensitive data, service disruptions, and overall loss of control over the affected systems. Given the high CVSS score, organizations should assess their exposure to this vulnerability and prioritize remediation based on their network architecture and the criticality of the impacted devices.
The blast radius is significant, as a successful exploitation could enable attackers to gain control over network infrastructure, potentially impacting all devices connected to the same network. Therefore, organizations should address this vulnerability with high urgency.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The version affected by this vulnerability is the Totolink A3002R router firmware version V4.0.0-B20230531.1404. Organizations should note that all versions prior to the vendor patch are vulnerable.
Mitigation & Remediation
To mitigate this vulnerability, organizations should apply the latest firmware updates provided by Totolink. The recommended version to upgrade to will be specified in the vendor's advisory. If a patch is not immediately available, organizations should consider implementing network controls to restrict access to the router from untrusted networks.
For additional guidance on security measures, organizations can benefit from conducting a thorough security assessment to identify potential weaknesses in their systems.
Application security assessments can help improve the overall security posture of the organization.
Detection Guidance
Organizations should monitor logs for any unusual behavior that may indicate an attempt to exploit this vulnerability. Key indicators include unexpected changes to router configurations or unusual access patterns. Network signatures can also be established to detect potential exploit attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2024-33820 lies in its demonstration of how seemingly minor configuration issues can lead to severe security vulnerabilities. This incident emphasizes the importance of regular firmware updates and proactive vulnerability management strategies.
Security teams should take this opportunity to reevaluate their risk assessments and vulnerability management programs to ensure they are adequately prepared for similar vulnerabilities in the future.
Vulnerability management program design is crucial for mitigating risks associated with vulnerabilities like this.
Ultimately, proactive measures and continuous monitoring will enhance an organization's resilience against emerging vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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