CVE-2021-46265 : What You Need to Know
Learn about CVE-2021-46265, a stack buffer overflow vulnerability in Tenda AC Series Router AC11_V02.03.01.104_CN, allowing attackers to cause a Denial of Service (DoS) attack. Find out how to mitigate and prevent this security risk.
Tenda AC Series Router AC11_V02.03.01.104_CN has a stack buffer overflow vulnerability in the wanBasicCfg module, allowing attackers to perform a Denial of Service (DoS) attack.
Understanding CVE-2021-46265
This CVE involves a vulnerability in Tenda AC Series Router AC11_V02.03.01.104_CN that can be exploited for a DoS attack.
What is CVE-2021-46265?
The CVE-2021-46265 vulnerability arises from a stack buffer overflow in the wanBasicCfg module of the Tenda router, enabling attackers to trigger a DoS attack by sending crafted overflow data.
The Impact of CVE-2021-46265
The vulnerability can result in a Denial of Service (DoS) attack on the affected Tenda router, disrupting its normal functionality and potentially causing network downtime.
Technical Details of CVE-2021-46265
This section outlines specific technical details of the CVE.
Vulnerability Description
The vulnerability is a stack buffer overflow in the wanBasicCfg module of Tenda AC Series Router AC11_V02.03.01.104_CN.
Affected Systems and Versions
- Product: Tenda AC Series Router AC11
- Version: V02.03.01.104_CN
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specially crafted overflow data to the wanBasicCfg module, triggering a stack buffer overflow and causing a DoS condition.
Mitigation and Prevention
Protecting systems from this vulnerability is essential to maintain network security.
Immediate Steps to Take
- Update the Tenda router firmware to the latest version provided by the vendor.
- Implement network segmentation to minimize the impact of potential attacks.
- Monitor network traffic for any signs of suspicious activities.
Long-Term Security Practices
- Regularly update and patch all networking equipment to address known vulnerabilities.
- Employ intrusion detection/prevention systems to enhance network security.
- Educate network users on cybersecurity best practices to prevent successful attacks.
Patching and Updates
Ensure timely installation of firmware updates and security patches released by Tenda to mitigate the vulnerability.