CVE-2020-3559 : Exploit Details and Defense Strategies
Learn about CVE-2020-3559, a Cisco Aironet Access Point Software vulnerability allowing remote attackers to cause device reloads. Find mitigation steps and long-term security practices.
A vulnerability in Cisco Aironet Access Point Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability stems from improper handling of clients trying to connect to the AP, enabling an attacker to exploit it by sending authentication requests from multiple clients.
Understanding CVE-2020-3559
This CVE involves a Denial of Service (DoS) vulnerability in Cisco Aironet Access Point Software.
What is CVE-2020-3559?
The vulnerability in Cisco Aironet Access Point Software allows an attacker to trigger a device reload by exploiting the improper handling of client connections.
The Impact of CVE-2020-3559
The vulnerability has a CVSS base score of 6.8, indicating a medium severity issue with high availability impact. Successful exploitation could lead to a DoS condition on the affected device.
Technical Details of CVE-2020-3559
This section delves into the specifics of the vulnerability.
Vulnerability Description
The vulnerability arises from the mishandling of client connections, enabling attackers to force device reloads.
Affected Systems and Versions
- Product: Cisco Aironet Access Point Software
- Vendor: Cisco
- Affected Version: Not applicable
Exploitation Mechanism
Attackers can exploit the vulnerability by sending authentication requests from multiple clients to the affected device, causing it to reload.
Mitigation and Prevention
Protecting systems from CVE-2020-3559 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor network traffic for any suspicious authentication requests.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly update and patch all software and firmware on network devices.
- Conduct security training for staff to recognize and respond to potential threats.
Patching and Updates
- Cisco may release patches or updates to address the vulnerability. Stay informed about security advisories and apply patches as soon as they are available.