CVE-2024-21505: web3-utils Prototype Pollution vulnerability

March 25, 2024

Versions of the package web3-utils before 4.2.1 are vulnerable to Prototype Pollution via the utility functions format and mergeDeep, due to insecure recursive merge. An attacker can manipulate an object’s prototype, potentially leading to the alteration of the behavior of all objects inheriting from the affected prototype by passing specially crafted input to these functions.

References

github.com/advisories/GHSA-87qp-7cw8-8q9c
github.com/web3/web3.js
github.com/web3/web3.js/commit/8ed041c6635d807b3da8960ad49e125e3d1b0e80
nvd.nist.gov/vuln/detail/CVE-2024-21505
security.snyk.io/vuln/SNYK-JS-WEB3UTILS-6229337

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