A security vulnerability has been detected in Edimax BR-6428nC up to 1.16. This impacts an unknown function of the file /goform/setWAN. Such manipulation of the argument pptpDfGateway leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
With a CVSS score of 7.4, this vulnerability is classified as high severity. The potential for exploitation is significant, especially given the low attack complexity and network attack vector. Organizations are at risk of unauthorized access and potential disruption if the vulnerability is not addressed.
Risk to organizations includes compromised confidentiality, integrity, and availability of the affected devices. Without prompt remediation, attackers may leverage this vulnerability to gain control over the devices, leading to further security breaches.
Urgency for defenders is critical; organizations should prioritize patching immediately to protect their infrastructure from potential attacks.
Vulnerability Details
The vulnerability arises due to improper handling of input parameters within the /goform/setWAN file. This leads to a buffer overflow condition when the pptpDfGateway argument is manipulated. The CVSS 3.1 base score of 8.8 indicates a high risk level, with high impacts on confidentiality, integrity, and availability.
The affected product is the Edimax BR-6428nC router, and this issue has been classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-120 (Buffer Copy without Checking Size of Input).
Technical Analysis
The root cause of this vulnerability is due to a lack of input validation in the handling of user-supplied arguments. The attack vector is remote, allowing an attacker to exploit the vulnerability without needing physical access to the device. Attack complexity is low, requiring minimal effort to exploit the vulnerability.
The privileges required to exploit this vulnerability are low, as any authenticated user can trigger the buffer overflow condition. User interaction is not required, meaning the attack can be automated.
The impacts on confidentiality, integrity, and availability are high, as successful exploitation could allow attackers to execute arbitrary code on the affected device, potentially leading to complete device compromise.
Risk & Impact Analysis
The deployment risk for organizations utilizing the Edimax BR-6428nC router is significant, considering the widespread use of such devices in various environments. The potential blast radius includes any network segment that relies on the device, making it crucial for organizations to assess their exposure.
The urgency for remediation is heightened due to the demonstrated exploitability of the vulnerability. Organizations should implement patches or mitigations as part of their priority patch cycle to avoid falling victim to potential exploitation.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch are affected. Specifically, versions of Edimax BR-6428nC up to 1.16 are vulnerable to this issue.
Mitigation & Remediation
Organizations should prioritize patching immediately. Ensure that devices are updated to the latest firmware version provided by the vendor. If a patch is unavailable, consider implementing network segmentation and access controls to limit exposure.
For additional support, organizations may consider engaging in penetration testing to assess their security posture and identify other potential vulnerabilities.
Detection Guidance
Monitoring for unusual network traffic patterns or indications of exploitation attempts is crucial. Log all access attempts to the /goform/setWAN endpoint and analyze for anomalies. Implement network-based intrusion detection systems to capture potential exploits against the device.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of robust input validation in networked devices. It serves as a reminder for security teams to regularly review and update their security practices. By staying informed about emerging threats, organizations can enhance their defensive measures.
Security teams should consider implementing a comprehensive penetration testing methodology to regularly assess their systems for vulnerabilities.
Additionally, reviewing the latest trends in vulnerability management can further assist organizations in maintaining a strong security posture.
Finally, leveraging services such as red teaming can provide an extra layer of assurance against complex threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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