CVE-2021-25848 : Security Advisory and Response

A vulnerability in Moxa Camera VPort 06EC-2V Series, version 1.1, allows attackers to disclose information due to improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd.

Understanding CVE-2021-25848

This CVE ID refers to a security flaw in Moxa Camera VPort 06EC-2V Series that can lead to information disclosure.

What is CVE-2021-25848?

The vulnerability arises from improper 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-2021-25848

Attackers can exploit this issue to disclose information by using a fixed loop counter variable without checking the actual available length via a crafted LLDP packet.

Technical Details of CVE-2021-25848

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows attackers to exploit the fixed loop counter variable to disclose information via a crafted LLDP packet.

Affected Systems and Versions

Moxa Camera VPort 06EC-2V Series, version 1.1, is affected by this vulnerability.

Exploitation Mechanism

Attackers can leverage a crafted LLDP packet to exploit the improper validation of the length field and disclose information.

Mitigation and Prevention

Following are the essential steps to mitigate and prevent exploitation of CVE-2021-25848.

Immediate Steps to Take

Update to the latest version of Moxa Camera VPort 06EC-2V Series to patch the vulnerability.
Monitor network traffic for any suspicious activity related to LLDP packets.

Long-Term Security Practices

Regularly apply security updates and patches to all network-connected devices.
Conduct regular security assessments to identify and remediate vulnerabilities.

Patching and Updates

Stay informed about security advisories and updates provided by Moxa for the VPort 06EC-2V Series cameras to ensure timely patching of vulnerabilities.