CVE-2020-6836

Description

grammar-parser.jison in the hot-formula-parser package before 3.0.1 for Node.js is vulnerable to arbitrary code injection. The package fails to sanitize values passed to the parse function and concatenates them in an eval call. If a value of the formula is taken from user-controlled input, it may allow attackers to run arbitrary commands on the server.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.96% Top 25%
Third-Party Advisory npmjs.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.npmjs.com/advisories/1439 third party advisory patch
https://github.com/handsontable/formula-parser/commit/396b089738d4bf30eb570a4fe6a188affa95cd5e patch
https://blog.truesec.com/2020/01/17/reverse-shell-through-a-node-js-math-parser/

Frequently Asked Questions

What is the severity of CVE-2020-6836?
CVE-2020-6836 has been scored as a critical severity vulnerability.
How to fix CVE-2020-6836?
To fix CVE-2020-6836, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-6836 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-6836 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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