Tenda i12 V1.0.0.10(3805) was discovered to contain a buffer overflow via the index parameter in the formWifiMacFilterSet function. This vulnerability, classified as high severity with a CVSS score of 8, poses significant risks to organizations utilizing affected devices.
The buffer overflow could be exploited by attackers on an adjacent network, making this vulnerability particularly concerning for devices that are not adequately segmented. Given the potential for high confidentiality, integrity, and availability impacts, organizations should prioritize patching immediately.
Currently, there are no public exploits or known exploitation instances reported for this vulnerability, but the high severity rating indicates a need for proactive measures.
Organizations should assess their exposure to this vulnerability and take steps to apply necessary updates or mitigations to their Tenda devices.
Vulnerability Details
The vulnerability found in Tenda i12 firmware is due to improper handling of input in the formWifiMacFilterSet function, leading to a buffer overflow. The CVSS version 3.1 score is 8.0, indicating a high severity level. This vulnerability impacts the i12 firmware version 1.0.0.10(3805) and was published on February 20, 2025.
The specific weakness is categorized as CWE-121, which relates to stack-based buffer overflows. Organizations using this firmware should be aware that the attack vector is an adjacent network, requiring low attack complexity and privileges.
Technical Analysis
The root cause of this vulnerability lies in insufficient input validation within the function that processes the index parameter. Attackers could exploit this flaw by sending specially crafted requests to the device, leading to potential arbitrary code execution.
The attack vector is local, as it requires proximity to the device within the same network segment. Given the low complexity of the attack and the required privileges being low, this vulnerability poses a significant risk to organizations.
No user interaction is required to exploit this vulnerability, further increasing its potential impact. The impacts could include high confidentiality, integrity, and availability loss, which are critical for organizations relying on affected devices.
Risk & Impact Analysis
Risk to organizations includes exposure to unauthorized access and potential disruption of services. The blast radius of this vulnerability could extend to all devices on the same network segment, allowing attackers to pivot and exploit other systems.
The urgency of addressing this vulnerability is high due to its CVSS score of 8.0. Organizations should address this in their priority patch cycle to mitigate the risks associated with potential exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected product is Tenda i12 firmware version 1.0.0.10(3805). Organizations should ensure they are using the latest firmware version to avoid exposure to this vulnerability.
Mitigation & Remediation
To mitigate the risks associated with this vulnerability, organizations should apply the latest firmware updates provided by Tenda. For additional security, implementing network segmentation can help protect critical assets from adjacent network attacks.
Continued monitoring and security assessments are recommended to ensure that the network remains resilient against potential exploits.
Penetration testing can also identify potential weaknesses in the configuration and implementation.
Detection Guidance
Organizations should monitor logs for any unusual activity related to the formWifiMacFilterSet function. Behavioral anomalies in traffic patterns that suggest exploitation attempts should be investigated.
Regular audits and reviews of network configurations are essential to detect misconfigurations that may expose the systems to attacks.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of robust input validation mechanisms in firmware development. Security teams should learn from this incident to improve their coding practices, ensuring that similar vulnerabilities are not introduced in future iterations.
The growing trend of vulnerabilities related to buffer overflows necessitates ongoing education and training for development teams to recognize and mitigate such risks.
Security testing best practices should be a regular part of the development lifecycle to catch these issues before deployment.
For organizations looking to enhance their security posture, engaging with professional security services can provide valuable insights into emerging threats and effective defenses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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