CVE-2018-0249 : Exploit Details and Defense Strategies
Learn about CVE-2018-0249, a vulnerability in Cisco Aironet 1800 Series Access Point that could lead to a denial of service attack. Find out affected systems, exploitation details, and mitigation steps.
A vulnerability in handling incoming 802.11 Association Requests for Cisco Aironet 1800 Series Access Point could lead to a denial of service (DoS) attack.
Understanding CVE-2018-0249
This CVE involves a vulnerability in Cisco Aironet 1800 Series Access Point that could be exploited by an unauthenticated attacker, potentially causing a DoS on the affected system.
What is CVE-2018-0249?
The vulnerability arises from the incorrect handling of malformed or invalid 802.11 Association Requests, allowing an attacker to disrupt the system by sending a stream of such requests to the device's local interface.
The Impact of CVE-2018-0249
If successfully exploited, this vulnerability could result in a DoS situation on the affected system, preventing new clients from connecting to the Access Point.
Technical Details of CVE-2018-0249
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in Cisco Aironet 1800 Series Access Point allows nearby unauthenticated attackers to exploit the mishandling of 802.11 Association Requests, leading to a DoS condition.
Affected Systems and Versions
- Cisco Aironet 1800 Series Access Point
- Aironet 1560 Series Access Points
- Aironet 1810 Series OfficeExtend Access Points
- Aironet 1810w Series Access Points
- Aironet 1815 Series Access Points
- Aironet 1830 Series Access Points
- Aironet 1850 Series Access Points
- Aironet 2800 Series Access Points
- Aironet 3800 Series Access Points
Exploitation Mechanism
- Attackers can exploit the vulnerability by sending malformed 802.11 Association Requests to the local interface of the targeted device.
Mitigation and Prevention
Steps to address and prevent the CVE-2018-0249 vulnerability.
Immediate Steps to Take
- Apply vendor-provided patches or updates to mitigate the vulnerability.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Regularly update and patch all network devices and software.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
- Cisco has released patches to address the vulnerability. Ensure timely application of these patches to secure the affected systems.