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CVE-2021-21600 : What You Need to Know

Learn about CVE-2021-21600, a flaw in Dell EMC NetWorker API service allowing denial of service attacks. Understand the impact and find mitigation steps.

Dell EMC NetWorker, version 19.4 or older, has been found to have an uncontrolled resource consumption flaw in its API service. This vulnerability could be exploited by an authorized API user through web and desktop interfaces, potentially leading to a denial of service attack.

Understanding CVE-2021-21600

This section dives into the details of CVE-2021-21600.

What is CVE-2021-21600?

CVE-2021-21600 is a vulnerability present in Dell EMC NetWorker versions 19.4 or older due to an uncontrolled resource consumption flaw in the API service. This flaw could enable a denial of service attack by an authorized API user via web and desktop interfaces.

The Impact of CVE-2021-21600

The impact of CVE-2021-21600 includes the potential for a denial of service attack within the manageability path of Dell EMC NetWorker, exposing affected systems to availability issues.

Technical Details of CVE-2021-21600

This section covers the technical aspects of CVE-2021-21600.

Vulnerability Description

The vulnerability in Dell EMC NetWorker arises from an uncontrolled resource consumption flaw in its API service, which could be leveraged by an authorized API user to execute denial of service attacks.

Affected Systems and Versions

Dell EMC NetWorker versions 19.4 or older are impacted by CVE-2021-21600, exposing systems to the risk of denial of service attacks.

Exploitation Mechanism

The vulnerability can be exploited by an authorized API user through web and desktop interfaces, allowing them to trigger denial of service attacks within the manageability path.

Mitigation and Prevention

This section outlines the steps to mitigate and prevent CVE-2021-21600.

Immediate Steps to Take

Users are advised to update Dell EMC NetWorker to version 19.5 or newer to mitigate the risk posed by this vulnerability. Additionally, monitoring for any suspicious activities is recommended.

Long-Term Security Practices

Implementing robust access controls, regular security assessments, and employee training on recognizing phishing attempts can enhance the long-term security posture of organizations.

Patching and Updates

Regularly applying security patches provided by Dell for Dell EMC NetWorker is crucial to address known vulnerabilities and strengthen the overall security of the system.

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