CVE-2021-39290 : What You Need to Know

This CVE concerns certain NetModule devices that are vulnerable to Limited Session Fixation via PHPSESSID.

Understanding CVE-2021-39290

This CVE affects NetModule devices with specific firmware versions, making them susceptible to limited session fixation.

What is CVE-2021-39290?

NetModule devices, including models NB800, NB1600, NB1601, and more, are affected by limited session fixation through PHPSESSID.

The Impact of CVE-2021-39290

The vulnerability in these devices could be exploited by attackers to fixate sessions, potentially leading to unauthorized access.

Technical Details of CVE-2021-39290

NetModule devices with firmware before versions 4.3.0.113, 4.4.0.111, and 4.5.0.105 are at risk.

Vulnerability Description

The vulnerability allows limited session fixation through PHPSESSID on affected NetModule devices.

Affected Systems and Versions

Models: NB800, NB1600, NB1601, NB1800, NB1810, NB2700, NB2710, NB2800, NB2810, NB3700, NB3701, NB3710, NB3711, NB3720, and NB3800
Firmware versions before: 4.3.0.113, 4.4.0.111, 4.5.0.105

Exploitation Mechanism

The vulnerability enables attackers to fixate sessions through PHPSESSID on the mentioned NetModule devices.

Mitigation and Prevention

It's crucial to take immediate action to secure the affected devices and prevent unauthorized access.

Immediate Steps to Take

Upgrade the firmware of NetModule devices to versions 4.3.0.113, 4.4.0.111, or 4.5.0.105 to mitigate the vulnerability.
Implement strong session management practices to prevent session fixation attacks.

Long-Term Security Practices

Regularly update firmware and security patches on NetModule devices.
Conduct security assessments and audits to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security advisories from NetModule and apply patches promptly to enhance device security.