Vulnerability Description
This affects the package immer before 9.0.6. A type confusion vulnerability can lead to a bypass of CVE-2020-28477 when the user-provided keys used in the path parameter are arrays. In particular, this bypass is possible because the condition (p === "__proto__" || p === "constructor") in applyPatches_ returns false if p is ['__proto__'] (or ['constructor']). The === operator (strict equality operator) returns false if the operands have different type.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Immer Project | Immer | < 9.0.6 |
Related Weaknesses (CWE)
References
- https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237PatchThird Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579266ExploitPatchThird Party Advisory
- https://snyk.io/vuln/SNYK-JS-IMMER-1540542ExploitPatchThird Party Advisory
- https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237PatchThird Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579266ExploitPatchThird Party Advisory
- https://snyk.io/vuln/SNYK-JS-IMMER-1540542ExploitPatchThird Party Advisory
FAQ
What is CVE-2021-23436?
CVE-2021-23436 is a vulnerability with a CVSS score of 5.6 (MEDIUM). This affects the package immer before 9.0.6. A type confusion vulnerability can lead to a bypass of CVE-2020-28477 when the user-provided keys used in the path parameter are arrays. In particular, thi...
How severe is CVE-2021-23436?
CVE-2021-23436 has been rated MEDIUM with a CVSS base score of 5.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-23436?
Check the references section above for vendor advisories and patch information. Affected products include: Immer Project Immer.