CVE-2021-33437: Medium severity mjs vulnerability
Published Jul 26, 2022
·Updated
An issue was discovered in mjs (mJS: Restricted JavaScript engine), ES6 (JavaScript version 6). There are memory leaks in frozencb() in mjs.c.
Affected Software
1 affected component
Cesanta mJS<2.20.0
Remediation
Patch Available
Event History
Jul 26, 2022
CVE Published
via MITRE·12:09 PM
Data Sourced
via MITRE·12:09 PM
Description
Frequently Asked Questions
1
What is CVE-2021-33437?
CVE-2021-33437 is a vulnerability in mjs (mJS: Restricted JavaScript engine) ES6 that allows memory leaks in frozen_cb() in mjs.c.
2
What software is affected by CVE-2021-33437?
Cesanta MJS versions up to and excluding 2.20.0 are affected by CVE-2021-33437.
3
What is the severity of CVE-2021-33437?
CVE-2021-33437 has a severity of medium with a score of 5.5.
4
How can I fix CVE-2021-33437?
To fix CVE-2021-33437, update Cesanta MJS to version 2.20.0 or later.
5
Where can I find more information about CVE-2021-33437?
You can find more information about CVE-2021-33437 at the following references: [GitHub Gist](https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6d) and [GitHub Issue](https://github.com/cesanta/mjs/issues/160).