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CVE-2021-37770

7.2 · HIGH

Nucleus CMS v3.71 is affected by a file upload vulnerability.

Published Jun 30, 2022CWE-434EPSS 1.33%

Overview

CVE-2021-37770 is a high-severity vulnerability. It was published on June 30, 2022 and has a CVSS 3.1 base score of 7.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Nucleus CMS v3.71 is affected by a file upload vulnerability. In this vulnerability, we can use upload to change the upload path to the path without the Htaccess file. Upload an Htaccess file and write it to AddType application / x-httpd-php.jpg. In this way, an attacker can upload a picture with shell, treat it as PHP, execute commands, so as to take down website resources.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/NucleusCMS/NucleusCMS/issues/96Refshimo.im/docs/Ch9CphJt8XwTvQ3dGitHubgithub.com/NucleusCMS/NucleusCMS/issues/96Refshimo.im/docs/Ch9CphJt8XwTvQ3d

How CyberStrike helps

Frequently asked questions

What is CVE-2021-37770?

CVE-2021-37770 is a high-severity vulnerability. It was published on June 30, 2022 and has a CVSS 3.1 base score of 7.2 (HIGH).

How severe is CVE-2021-37770?

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-37770?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-37770?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-37770 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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