CVE-2021-25845 : What You Need to Know
Learn about CVE-2021-25845, a denial of service vulnerability in Moxa Camera VPort 06EC-2V Series, version 1.1, allowing attackers to disrupt normal operations via a crafted lldp packet.
A denial of service vulnerability has been discovered in Moxa Camera VPort 06EC-2V Series, version 1.1, designated as CVE-2021-25845.
Understanding CVE-2021-25845
This section will provide a detailed overview of the CVE-2021-25845 vulnerability.
What is CVE-2021-25845?
The vulnerability in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, arises due to improper validation of the ChassisID TLV. Attackers can exploit this issue to cause a denial of service by triggering a NULL pointer dereference through a specially crafted lldp packet.
The Impact of CVE-2021-25845
The impact of this vulnerability allows malicious actors to disrupt the normal operation of the affected Moxa Camera VPort 06EC-2V Series, version 1.1, resulting in a denial of service condition.
Technical Details of CVE-2021-25845
In this section, we will delve into the technical aspects of CVE-2021-25845.
Vulnerability Description
The vulnerability stems from the lack of proper validation of the ChassisID TLV in userdisk/vport_lldpd of the Moxa Camera VPort 06EC-2V Series, version 1.1.
Affected Systems and Versions
The vulnerability affects Moxa Camera VPort 06EC-2V Series, specifically version 1.1.
Exploitation Mechanism
Exploitation of this vulnerability can be carried out by sending a maliciously crafted lldp packet to trigger a NULL pointer dereference, leading to a denial of service.
Mitigation and Prevention
This section covers the necessary steps to mitigate and prevent exploitation of CVE-2021-25845.
Immediate Steps to Take
It is recommended to apply security patches provided by Moxa to address the vulnerability. Additionally, network segmentation and access controls can help reduce the attack surface.
Long-Term Security Practices
Implementing regular security updates and staying informed about potential security advisories can contribute to maintaining a secure environment.
Patching and Updates
Regularly check for patches and updates from Moxa to address security vulnerabilities and ensure the system is up to date.