CVE-2021-44158 : Security Advisory and Response
Learn about CVE-2021-44158 affecting ASUS RT-AX56U Wi-Fi Router. Discover the impact, technical details, and mitigation steps to secure your system.
ASUS RT-AX56U Wi-Fi Router is vulnerable to a stack-based buffer overflow, allowing attackers to execute arbitrary code.
Understanding CVE-2021-44158
What is CVE-2021-44158?
The vulnerability in ASUS RT-AX56U Router enables a local network attacker to gain control of the system or disrupt services through code execution.
The Impact of CVE-2021-44158
The vulnerability has a high impact on confidentiality, integrity, and availability, with a CVSS base score of 8.
Technical Details of CVE-2021-44158
Vulnerability Description
Improper validation for httpd parameter length leads to a stack-based buffer overflow in the router.
Affected Systems and Versions
- Product: RT-AX56U
- Vendor: ASUS
- Versions Affected: 3.0.0.4.386.44266
Exploitation Mechanism
- Attack Complexity: Low
- Privileges Required: Low
- Attack Vector: Adjacent Network
- User Interaction: None
Mitigation and Prevention
Immediate Steps to Take
- Apply ASUS RT-AX56U firmware update to version 3.0.0.4.386.45898
Long-Term Security Practices
- Regularly update router firmware
- Implement network segmentation
Patching and Updates
Ensure all devices are updated with the latest firmware to protect against this vulnerability.