CVE-2024-2984: Detailed Analysis and Mitigation Strategies

Executive Summary

CVE-2024-2984 is a critical vulnerability identified in the Tenda FH1202 router firmware version 1.2.0.14(408). This vulnerability affects the function

formSetCfm

in the file

/goform/setcfm

. The manipulation of the argument

funcpara1

leads to a stack-based buffer overflow, which can be exploited remotely. The vulnerability has been publicly disclosed and is actively being exploited in the wild. This report provides a detailed analysis of the vulnerability, its exploitation, and mitigation strategies to safeguard your systems.

Technical Information

CVE-2024-2984 is a stack-based buffer overflow vulnerability (CWE-121) in the Tenda FH1202 router firmware version 1.2.0.14(408). The vulnerability resides in the

formSetCfm

function within the

/goform/setcfm

file. The issue arises when the

funcpara1

argument is manipulated, leading to a buffer overflow condition. This vulnerability can be exploited remotely, allowing attackers to execute arbitrary code on the affected device.

The attack vector for this vulnerability is network-based, meaning that an attacker can exploit it remotely without requiring physical access to the device. The attack complexity is low, and no special privileges are required to exploit the vulnerability. Additionally, no user interaction is necessary, making it an attractive target for attackers. The scope of the vulnerability remains unchanged, but the impact on confidentiality, integrity, and availability is high.

The CVSS v3.1 Base Score for this vulnerability is 8.8 (High), while the CVSS v2.0 Base Score is 9.0 (High). These scores reflect the severity of the vulnerability and the potential damage it can cause if exploited.

Exploitation in the Wild

The exploit for CVE-2024-2984 has been publicly disclosed, and there are reports of it being actively used in the wild. The vulnerability allows remote attackers to execute arbitrary code on the affected device, potentially leading to a full system compromise. Attackers can leverage this vulnerability to gain unauthorized access to the device, exfiltrate sensitive information, or use the compromised device as a pivot point for further attacks within the network.

References to Exploits

GitHub - IoT Vulnerable (https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/FH/FH1202/formSetCfm.md) VulDB - CVE-2024-2984 (https://vuldb.com/?id.258153)

APT Groups using this vulnerability

While there are no specific APT groups currently attributed to exploiting this vulnerability, the nature of the exploit makes it a potential target for groups interested in IoT device exploitation. Given the increasing interest of APT groups in targeting IoT devices, it is crucial to monitor for any signs of exploitation and take proactive measures to secure vulnerable devices.

Affected Product Versions

The primary affected product is the Tenda FH1202 router with firmware version 1.2.0.14(408). It is essential to identify and update any devices running this firmware version to mitigate the risk of exploitation.

Workaround and Mitigation

To mitigate the risk posed by CVE-2024-2984, the following strategies should be implemented:

1. Firmware Update: Check for firmware updates from Tenda and apply any available patches immediately. Keeping the firmware up to date is the most effective way to address this vulnerability.
2. Network Segmentation: Isolate vulnerable devices from critical network segments to limit potential damage. This can prevent attackers from moving laterally within the network if they compromise a vulnerable device.
3. Monitor Network Traffic: Implement network monitoring to detect unusual traffic patterns that may indicate exploitation attempts. Tools like Wireshark and Snort can be useful for this purpose.
4. Access Control: Restrict access to the device management interface to trusted IP addresses only. This can be achieved by configuring firewall rules or using access control lists (ACLs).

References

NVD - CVE-2024-2984 (https://nvd.nist.gov/vuln/detail/CVE-2024-2984) Recorded Future - CVE-2024-2984 (https://www.recordedfuture.com/vulnerability-database/CVE-2024-2984) Aqua Security - CVE-2024-2984 (https://avd.aquasec.com/nvd/2024/cve-2024-2984/) GitHub Advisory - CVE-2024-2984 (https://github.com/advisories/GHSA-6j89-jrg7-jp74) VulDB - CVE-2024-2984 (https://vuldb.com/?id.258153)

Rescana is here for you

At Rescana, we understand the critical importance of safeguarding your systems against emerging threats. Our Continuous Threat and Exposure Management (CTEM) platform is designed to help you identify, assess, and mitigate vulnerabilities like CVE-2024-2984. We provide comprehensive threat intelligence, real-time monitoring, and expert guidance to ensure your organization's cybersecurity posture remains robust.

For any questions or further assistance regarding this report or any other cybersecurity concerns, please contact us at ops@rescana.com. We are here to help you navigate the complex landscape of cybersecurity and protect your valuable assets.