CVE-2021-33449: 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_bcode_part_get_by_offset() in mjs.c.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cesanta MJS | <2.20.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-33449?
CVE-2021-33449 is an issue discovered in mjs (mJS: Restricted JavaScript engine), ES6 (JavaScript version 6), which involves a NULL pointer dereference in mjs_bcode_part_get_by_offset() in mjs.c.
What is the severity of CVE-2021-33449?
The severity of CVE-2021-33449 is medium with a CVSS score of 5.5.
What software is affected by CVE-2021-33449?
Cesanta MJS up to version 2.20.0 is affected by CVE-2021-33449.
Is there a fix available for CVE-2021-33449?
Yes, upgrading to a version beyond 2.20.0 of Cesanta MJS will fix the vulnerability.
Where can I find more information about CVE-2021-33449?
You can find more information about CVE-2021-33449 in the following references: [Link 1](https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6d), [Link 2](https://github.com/cesanta/mjs/issues/162).
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