CVE-2021-39289 : Exploit Details and Defense Strategies

This CVE-2021-39289 article provides details about insecure password handling in certain NetModule devices.

Understanding CVE-2021-39289

This section explains the impact, technical details, and mitigation steps related to CVE-2021-39289.

What is CVE-2021-39289?

Certain NetModule devices are affected by insecure password handling, using cleartext or reversible encryption. The vulnerability impacts models with firmware versions before 4.3.0.113, 4.4.0.111, and 4.5.0.105, including NB800, NB1600, NB1601, NB1800, NB1810, NB2700, NB2710, NB2800, NB2810, NB3700, NB3701, NB3710, NB3711, NB3720, and NB3800.

The Impact of CVE-2021-39289

The vulnerability allows attackers to potentially compromise the security of affected NetModule devices by exploiting insecure password handling.

Technical Details of CVE-2021-39289

This section delves into the vulnerability description, affected systems, versions, and the exploitation mechanism.

Vulnerability Description

Certain NetModule devices have insecure password handling, which can lead to security vulnerabilities.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability can be exploited by attackers to gain unauthorized access due to insecure password storage.

Mitigation and Prevention

In this section, we cover the immediate steps, long-term security practices, and patching requirements.

Immediate Steps to Take

Update the firmware of affected devices to versions 4.3.0.113, 4.4.0.111, or 4.5.0.105.
Change default passwords to strong, unique ones.

Long-Term Security Practices

Implement multi-factor authentication where possible.
Regularly audit and update password policies.

Patching and Updates

Regularly check for firmware updates and security advisories from NetModule.