CVE-2021-41753 : Security Advisory and Response
Discover the impact and mitigation strategies for CVE-2021-41753, a denial-of-service vulnerability in WPA2 and WPA3-SAE authentication methods affecting D-Link DIR-X1560 and DIR-X6060 routers.
A denial-of-service attack in WPA2, and WPA3-SAE authentication methods in D-Link DIR-X1560, v1.04B04, and DIR-X6060, v1.11B04 allows a remote unauthenticated attacker to disconnect a wireless client via sending specific spoofed SAE authentication frames.
Understanding CVE-2021-41753
This CVE involves a denial-of-service vulnerability affecting specific D-Link router models.
What is CVE-2021-41753?
This CVE identifies a flaw in the WPA2 and WPA3-SAE authentication methods in certain D-Link routers, enabling a remote unauthenticated attacker to disrupt a wireless client's connection by transmitting malicious SAE authentication frames.
The Impact of CVE-2021-41753
The vulnerability could lead to a denial of service, causing disruption to wireless connectivity for affected clients utilizing the compromised D-Link routers.
Technical Details of CVE-2021-41753
This section delves into the technical specifics of the CVE.
Vulnerability Description
The vulnerability resides in the authentication mechanisms of WPA2 and WPA3-SAE in D-Link DIR-X1560, v1.04B04, and DIR-X6060, v1.11B04, permitting an attacker to execute a denial-of-service attack against wireless clients.
Affected Systems and Versions
- Product: D-Link DIR-X1560, DIR-X6060
- Versions: v1.04B04, v1.11B04
Exploitation Mechanism
The vulnerability is exploited by sending crafted SAE authentication frames to the target, triggering a disconnection of the wireless client from the network.
Mitigation and Prevention
Learn how to protect your systems against this vulnerability.
Immediate Steps to Take
- Update to the latest firmware version provided by D-Link.
- Monitor network traffic for any signs of malicious activity.
- Implement strong network security measures.
Long-Term Security Practices
- Conduct regular security assessments on your network infrastructure.
- Educate users on secure Wi-Fi practices to prevent attacks.
Patching and Updates
- Keep abreast of D-Link security advisories for any future patches or updates.