CVE-2018-19021 Explained : Impact and Mitigation
Learn about CVE-2018-19021 affecting Emerson DeltaV DCS Versions 11.3.1, 11.3.2, 12.3.1, 13.3.1, 14.3, R5.1, R6. Discover the impact, technical details, and mitigation steps for this authentication bypass vulnerability.
CVE-2018-19021 was published on January 10, 2019, by the ICS-CERT. It affects Emerson DeltaV Distributed Control System (DCS) Versions 11.3.1, 11.3.2, 12.3.1, 13.3.1, 14.3, R5.1, R6, and earlier.
Understanding CVE-2018-19021
This CVE involves an authentication bypass vulnerability in Emerson DeltaV DCS, potentially leading to a denial of service attack.
What is CVE-2018-19021?
An attacker could exploit a flaw in the maintenance port authentication process to execute a denial of service attack on affected Emerson DeltaV DCS versions.
The Impact of CVE-2018-19021
The vulnerability allows attackers to bypass authentication, potentially disrupting critical operations and causing a denial of service on affected systems.
Technical Details of CVE-2018-19021
Emerson DeltaV DCS versions are susceptible to an authentication bypass vulnerability.
Vulnerability Description
A specially crafted script can circumvent the authentication process of the maintenance port, enabling attackers to trigger a denial of service.
Affected Systems and Versions
- Emerson DeltaV DCS Versions 11.3.1, 11.3.2, 12.3.1, 13.3.1, 14.3, R5.1, R6, and prior
Exploitation Mechanism
Attackers can exploit the vulnerability by using a carefully crafted script to bypass the authentication mechanism of the maintenance port.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of CVE-2018-19021.
Immediate Steps to Take
- Implement network segmentation to restrict access to critical systems
- Apply the latest security patches and updates from Emerson
- Monitor network traffic for any suspicious activities
Long-Term Security Practices
- Conduct regular security assessments and audits
- Train employees on cybersecurity best practices
- Keep abreast of security advisories and updates from Emerson
Patching and Updates
- Emerson may release patches or updates to address the authentication bypass vulnerability. Ensure timely installation of these patches to mitigate the risk of exploitation.