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CVE-2021-23521

5.5 · MEDIUM

This affects the package juce-framework/JUCE before 6.1.5.

Published Jan 31, 2022CWE-59EPSS 0.54%

Overview

CVE-2021-23521 is a medium-severity vulnerability. It was published on January 31, 2022 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

This affects the package juce-framework/JUCE before 6.1.5. This vulnerability is triggered when a malicious archive is crafted with an entry containing a symbolic link. When extracted, the symbolic link is followed outside of the target dir allowing writing arbitrary files on the target host. In some cases, this can allow an attacker to execute arbitrary code. The vulnerable code is in the ZipFile::uncompressEntry function in juce_ZipFile.cpp and is executed when the archive is extracted upon calling uncompressTo() on a ZipFile object.

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/juce-framework/JUCE/commit/2e874e80cba0152201aff6a4d0dc407997d10a7fRefsnyk.io/vuln/SNYK-UNMANAGED-JUCEFRAMEWORKJUCE-2388608GitHubgithub.com/juce-framework/JUCE/commit/2e874e80cba0152201aff6a4d0dc407997d10a7fRefsnyk.io/vuln/SNYK-UNMANAGED-JUCEFRAMEWORKJUCE-2388608

How CyberStrike helps

Frequently asked questions

What is CVE-2021-23521?

CVE-2021-23521 is a medium-severity vulnerability. It was published on January 31, 2022 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-23521?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-23521?

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-2021-23521?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-23521 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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