---
id: 8753
title: "Attacking ECMAScript Engines with Redefinition"
source_domain: projectzero.google
source_url: "https://projectzero.google/2015/08/attacking-ecmascript-engines-with.html"
published_at: "2015-08-17T00:00:00Z"
tags: ["exploitation", "javascript", "flash", "ecmascript", "redefinition"]
phying_url: "https://phying.com/item/8753"
lang: en
---

# Attacking ECMAScript Engines with Redefinition

## Summary

Dynamic redefinition of ECMAScript functions and variables can break native code assumptions; Project Zero found 24 such vulnerabilities in Adobe Flash, with similar issues seen in the wild.

## Intelligence Metadata

- **Sources:** projectzero.google
- **Published:** 2015-08-17T00:00:00Z
- **Original:** https://projectzero.google/2015/08/attacking-ecmascript-engines-with.html
- **Phying News:** https://phying.com/item/8753