high
7.5
CWE
22
Advisory Published
Updated

CVE-2021-32769: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in micronaut-core

First published: Fri Jul 16 2021(Updated: )

Micronaut is a JVM-based, full stack Java framework designed for building JVM applications. A path traversal vulnerability exists in versions prior to 2.5.9. With a basic configuration, it is possible to access any file from a filesystem, using "/../../" in the URL. This occurs because Micronaut does not restrict file access to configured paths. The vulnerability is patched in version 2.5.9. As a workaround, do not use `**` in mapping, use only `*`, which exposes only flat structure of a directory not allowing traversal. If using Linux, another workaround is to run micronaut in chroot.

Credit: security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
Objectcomputing Micronaut<2.5.9

Remedy

https://github.com/micronaut-projects/micronaut-core/commit/a0cfeb13bf1ef5d692d16d4a3b91b34b7456bb11

Remedy

https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-cjx7-399x-p2rj

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID for this Micronaut vulnerability?

    The vulnerability ID for this Micronaut vulnerability is CVE-2021-32769.

  • What is Micronaut?

    Micronaut is a JVM-based, full stack Java framework designed for building JVM applications.

  • What is the severity of CVE-2021-32769?

    The severity of CVE-2021-32769 is high with a severity value of 7.5.

  • How does the path traversal vulnerability in Micronaut occur?

    The path traversal vulnerability in Micronaut occurs because it is possible to access any file from a filesystem using "/../../" in the URL.

  • How can I fix the path traversal vulnerability in Micronaut?

    To fix the path traversal vulnerability in Micronaut, you should update to version 2.5.9 or later.

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