CWE
476
Advisory Published
Updated

CVE-2021-33447: Null Pointer Dereference

First published: Tue Jul 26 2022(Updated: )

An issue was discovered in mjs (mJS: Restricted JavaScript engine), ES6 (JavaScript version 6). There is NULL pointer dereference in mjs_print() in mjs.c.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Cesanta MJS<2.20.0

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Frequently Asked Questions

  • What is CVE-2021-33447?

    CVE-2021-33447 is a vulnerability in the mjs (mJS: Restricted JavaScript engine) ES6 (JavaScript version 6) that allows for a NULL pointer dereference in mjs_print() in mjs.c.

  • What is the severity of CVE-2021-33447?

    The severity of CVE-2021-33447 is medium, with a severity value of 5.5.

  • What software is affected by CVE-2021-33447?

    Cesanta MJS version up to exclusive 2.20.0 is affected by CVE-2021-33447.

  • How can I fix CVE-2021-33447?

    Upgrade to a version of Cesanta MJS that is higher than 2.20.0, as the vulnerability has been fixed in later versions.

  • Where can I find more information about CVE-2021-33447?

    You can find more information about CVE-2021-33447 on the GitHub page for Cesanta MJS and in the provided references.

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