CVE-2021-25847 : Vulnerability Insights and Analysis

This CVE-2021-25847 vulnerability involves the improper validation of the length field of LLDP-MED TLV in Moxa Camera VPort 06EC-2V Series, version 1.1. Attackers can exploit this issue to disclose information by controlling a loop counter variable through a specially crafted LLDP packet.

Understanding CVE-2021-25847

This section provides insights into the nature and impact of the CVE-2021-25847 vulnerability.

What is CVE-2021-25847?

The vulnerability stems from inadequate validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1.

The Impact of CVE-2021-25847

The vulnerability allows attackers to gain unauthorized access to sensitive information by manipulating a loop counter variable using a malicious LLDP packet.

Technical Details of CVE-2021-25847

This section delves into the specific technical details of the CVE-2021-25847 vulnerability.

Vulnerability Description

The flaw in the validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd enables attackers to extract information from the affected Moxa Camera VPort 06EC-2V Series.

Affected Systems and Versions

The vulnerability affects Moxa Camera VPort 06EC-2V Series with version 1.1.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specially crafted LLDP packet to the target system, leveraging a controllable loop counter variable.

Mitigation and Prevention

In response to CVE-2021-25847, it is crucial to implement effective mitigation strategies and security measures.

Immediate Steps to Take

Update to the latest firmware version provided by Moxa for the affected camera models.
Regularly monitor network traffic for any suspicious activity.
Implement access controls and restrictions to limit unauthorized access.

Long-Term Security Practices

Conduct regular security audits and assessments to identify and address potential vulnerabilities.
Educate users and administrators about safe cybersecurity practices to prevent exploitation.

Patching and Updates

Stay informed about security advisories and updates from Moxa to promptly apply patches addressing CVE-2021-25847.