CVE-2018-5264 : Exploit Details and Defense Strategies

Ubiquiti UniFi 52 devices are vulnerable to a bypass issue in Hotspot mode, allowing remote attackers to circumvent restrictions on Wi-Fi usage during designated 'free time.'

Understanding CVE-2018-5264

When using the Hotspot mode on Ubiquiti UniFi 52 devices, attackers can exploit a flaw to evade limitations on Wi-Fi usage.

What is CVE-2018-5264?

Attackers can obtain a cookie through a specific request and use it to bypass intended restrictions on Wi-Fi usage during 'free time.'

The Impact of CVE-2018-5264

This vulnerability enables remote attackers to manipulate Wi-Fi usage restrictions, potentially leading to unauthorized network access.

Technical Details of CVE-2018-5264

Ubiquiti UniFi 52 devices are susceptible to a bypass vulnerability in Hotspot mode.

Vulnerability Description

Attackers can acquire a cookie via a request and utilize it to bypass restrictions on Wi-Fi usage during designated 'free time.'

Affected Systems and Versions

Product: Ubiquiti UniFi 52 devices
Version: Not applicable

Exploitation Mechanism

Attackers send a request to obtain a cookie through /guest/s/default/
The obtained cookie is used in a /guest/s/default/login request with the byfree parameter.

Mitigation and Prevention

Steps to address and prevent the CVE-2018-5264 vulnerability.

Immediate Steps to Take

Monitor network traffic for suspicious activities related to cookie manipulation.
Implement network segmentation to limit the impact of potential unauthorized access.

Long-Term Security Practices

Regularly update firmware and security patches for Ubiquiti UniFi 52 devices.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Apply patches and updates provided by Ubiquiti to mitigate the CVE-2018-5264 vulnerability.