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CVE-2021-21412

6.4 · MEDIUM

Potential for arbitrary code execution in npm package @thi.ng/egf `#gpg`-tagged property values (only if `decrypt: true` option is enabled).

Published Mar 30, 2021CWE-78EPSS 1.34%

Overview

CVE-2021-21412 is a medium-severity vulnerability. It was published on March 30, 2021 and has a CVSS 3.1 base score of 6.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Potential for arbitrary code execution in npm package @thi.ng/egf `#gpg`-tagged property values (only if `decrypt: true` option is enabled). PR with patch has been submitted and will has been released as of v0.4.0 By default the EGF parse functions do NOT attempt to decrypt values (since GPG only available in non-browser env). However, if GPG encrypted values are used/required: 1. Perform a regex search for `#gpg`-tagged values in the EGF source file/string and check for backtick (\`) chars in the encrypted value string 2. Replace/remove them or skip parsing if present.

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/thi-ng/umbrella/blob/develop/packages/egf/CHANGELOG.md#040-2021-03-27GitHubgithub.com/thi-ng/umbrella/commit/88f61656e5f5cfba960013b8133186389efaf243GitHubgithub.com/thi-ng/umbrella/security/advisories/GHSA-rj44-gpjc-29r7Refwww.npmjs.com/package/%40thi.ng/egfGitHubgithub.com/thi-ng/umbrella/blob/develop/packages/egf/CHANGELOG.md#040-2021-03-27GitHubgithub.com/thi-ng/umbrella/commit/88f61656e5f5cfba960013b8133186389efaf243GitHubgithub.com/thi-ng/umbrella/security/advisories/GHSA-rj44-gpjc-29r7Refwww.npmjs.com/package/%40thi.ng/egf

How CyberStrike helps

Frequently asked questions

What is CVE-2021-21412?

CVE-2021-21412 is a medium-severity vulnerability. It was published on March 30, 2021 and has a CVSS 3.1 base score of 6.4 (MEDIUM).

How severe is CVE-2021-21412?

This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-21412?

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-2021-21412?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-21412 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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