CVE-2020-27253 : Security Advisory and Response

FactoryTalk Linx Version 6.11 and prior is affected by a vulnerability that could lead to a denial-of-service condition. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2020-27253

A flaw in the Ingress/Egress checks routine of FactoryTalk Linx Version 6.11 and earlier versions poses a security risk.

What is CVE-2020-27253?

The vulnerability in FactoryTalk Linx Version 6.11 and prior allows a remote, unauthenticated attacker to create a malicious packet, potentially causing a denial-of-service scenario.

The Impact of CVE-2020-27253

Exploitation of this vulnerability could result in a denial-of-service condition on the affected device, impacting its availability and functionality.

Technical Details of CVE-2020-27253

FactoryTalk Linx Version 6.11 and earlier versions are susceptible to a specific type of attack due to inadequate validation mechanisms.

Vulnerability Description

The flaw lies in the Ingress/Egress checks routine, enabling attackers to craft malicious packets that trigger a denial-of-service state.

Affected Systems and Versions

Product: FactoryTalk Linx
Versions affected: Version 6.11 and prior

Exploitation Mechanism

Attackers can exploit the vulnerability remotely without authentication by sending specially crafted packets.

Mitigation and Prevention

Immediate action and long-term security practices are crucial to safeguard against CVE-2020-27253.

Immediate Steps to Take

Apply vendor-supplied patches or updates promptly.
Implement network segmentation to limit exposure to potential attacks.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and mitigate risks proactively.
Educate users and administrators about safe practices and security protocols.

Patching and Updates

Stay informed about security advisories and updates from the vendor.
Test patches in a controlled environment before deploying them to production systems.