CVE-2018-14492 : Vulnerability Insights and Analysis

Tenda AC7, AC9, and AC10 devices are vulnerable to a Stack-based Buffer Overflow when specific parameters are passed to an unspecified URI.

Understanding CVE-2018-14492

This CVE identifies a critical vulnerability in Tenda routers that could be exploited by attackers.

What is CVE-2018-14492?

The vulnerability in Tenda AC7, AC9, and AC10 routers allows for a Stack-based Buffer Overflow through extended parameters in an unspecified URI.

The Impact of CVE-2018-14492

This vulnerability could be exploited by malicious actors to execute arbitrary code or crash the affected devices, leading to a denial of service (DoS) condition.

Technical Details of CVE-2018-14492

Tenda routers are susceptible to a specific type of buffer overflow attack due to inadequate input validation.

Vulnerability Description

The vulnerability arises when a lengthy limitSpeed or limitSpeedup parameter is passed to an unspecified /goform URI, triggering a Stack-based Buffer Overflow.

Affected Systems and Versions

Tenda AC7 up to V15.03.06.44_CN
Tenda AC9 up to V15.03.05.19(6318)_CN
Tenda AC10 up to V15.03.06.23_CN

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted requests with excessively long parameters, causing a buffer overflow and potentially gaining unauthorized access.

Mitigation and Prevention

Taking immediate action and implementing long-term security measures are crucial to mitigate the risks associated with CVE-2018-14492.

Immediate Steps to Take

Apply security patches provided by Tenda to address the vulnerability promptly.
Monitor network traffic for any suspicious activities that could indicate exploitation attempts.

Long-Term Security Practices

Regularly update router firmware to protect against known vulnerabilities.
Implement strong network security measures, such as firewalls and intrusion detection systems.

Patching and Updates

Stay informed about security advisories from Tenda and apply patches as soon as they are released to ensure the protection of your devices.