CVE-2021-24033

Public Exploit

Description

react-dev-utils prior to v11.0.4 exposes a function, getProcessForPort, where an input argument is concatenated into a command string to be executed. This function is typically used from react-scripts (in Create React App projects), where the usage is safe. Only when this function is manually invoked with user-provided values (ie: by custom code) is there the potential for command injection. If you're consuming it from react-scripts then this issue does not affect you.

References

Link	Tags
https://github.com/facebook/create-react-app/pull/10644	exploit third party advisory patch
https://www.facebook.com/security/advisories/cve-2021-24033	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-24033?: CVE-2021-24033 has been scored as a medium severity vulnerability.
How to fix CVE-2021-24033?: To fix CVE-2021-24033, 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-2021-24033 being actively exploited in the wild?: It is possible that CVE-2021-24033 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-24033?: CVE-2021-24033 affects Facebook react-dev-utils.

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Description

Category

CWE-78 – Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

Frequently Asked Questions