CVE-2021-44746 Explained : Impact and Mitigation

UNIVERGE DT 820 V3.2.7.0 and prior, UNIVERGE DT 830 V5.2.7.0 and prior, UNIVERGE DT 930 V2.4.0.0 and prior, IP Phone Manager V8.9.1 and prior, Data Maintenance Tool for DT900 Series V5.3.0.0 and prior, Data Maintenance Tool for DT800 Series V4.2.0.0 and prior allow a remote attacker to obtain configuration information when accessing the internal network.

Understanding CVE-2021-44746

This CVE identifies vulnerabilities in various NEC products that can lead to unauthorized access and data exposure.

What is CVE-2021-44746?

The CVE-2021-44746 vulnerability affects specific versions of UNIVERGE DT series phones, IP Phone Manager, and Data Maintenance Tools by NEC, enabling a remote attacker to potentially extract configuration details with internal network access.

The Impact of CVE-2021-44746

The vulnerability poses a risk of unauthorized information retrieval through the exposed configuration data, potentially leading to further exploitation or compromise of the affected systems.

Technical Details of CVE-2021-44746

This section provides technical specifics of the CVE to understand the associated risks and affected systems.

Vulnerability Description

The vulnerability allows unauthorized individuals, with internal network access, to extract configuration information from UNIVERGE DT phones, IP Phone Manager, and Data Maintenance Tools from NEC.

Affected Systems and Versions

UNIVERGE DT 820 V3.2.7.0 and prior
UNIVERGE DT 830 V5.2.7.0 and prior
UNIVERGE DT 930 V2.4.0.0 and prior
IP Phone Manager V8.9.1 and prior
Data Maintenance Tool for DT900 Series V5.3.0.0 and prior
Data Maintenance Tool for DT800 Series V4.2.0.0 and prior

Exploitation Mechanism

The vulnerability allows remote attackers to access and retrieve configuration information of the affected products, potentially exploiting it for malicious purposes.

Mitigation and Prevention

To address CVE-2021-44746 and enhance system security, certain mitigation strategies and preventive measures are recommended.

Immediate Steps to Take

Update affected products to the latest secure versions provided by NEC.
Restrict network access to the vulnerable devices to mitigate external threats.
Monitor network traffic and system logs for any suspicious activities.

Long-Term Security Practices

Implement network segmentation to isolate critical systems from potentially compromised areas.
Conduct regular security audits and penetration testing to detect and address vulnerabilities proactively.

Patching and Updates

Regularly apply security patches and updates released by NEC to ensure the protection of the systems against known vulnerabilities.