Babel Plugin Transform Async to Generator, a crucial Babel plugin for developers targeting ES2015 environments, empowers the use of modern asynchronous JavaScript features. Versions 6.4.0 and 6.4.5 both serve the core function of transforming async functions into ES2015 generators, enabling compatibility with older JavaScript runtimes that lack native async/await support. Key dependencies like babel-helper-remap-async-to-generator, babel-plugin-syntax-async-functions, and babel-runtime remain consistent across both versions, ensuring the fundamental functionality remains unchanged. Similarly, the development dependencies, particularly babel-helper-plugin-test-runner, contribute to the stability and testing of the plugin.
The primary difference lies in the release date and, potentially, bug fixes and minor improvements incorporated in version 6.4.5, released on January 19, 2016, compared to version 6.4.0, released on January 6, 2016. Developers should always favor the latest stable version (6.4.5) to benefit from these potential enhancements and bug resolutions. The MIT license guarantees freedom for developers to use, modify, and distribute the plugin. Leveraging this plugin allows developers to progressively adopt async/await syntax without sacrificing compatibility, streamlining asynchronous code management and improving overall code readability within ES2015 contexts, while ensuring legacy browser support when transpiling code with Babel.
All the vulnerabilities related to the version 6.4.5 of the package
Babel vulnerable to arbitrary code execution when compiling specifically crafted malicious code
Using Babel to compile code that was specifically crafted by an attacker can lead to arbitrary code execution during compilation, when using plugins that rely on the path.evaluate()or path.evaluateTruthy() internal Babel methods.
Known affected plugins are:
@babel/plugin-transform-runtime@babel/preset-env when using its useBuiltIns option@babel/helper-define-polyfill-provider, such as babel-plugin-polyfill-corejs3, babel-plugin-polyfill-corejs2, babel-plugin-polyfill-es-shims, babel-plugin-polyfill-regeneratorNo other plugins under the @babel/ namespace are impacted, but third-party plugins might be.
Users that only compile trusted code are not impacted.
The vulnerability has been fixed in @babel/traverse@7.23.2.
Babel 6 does not receive security fixes anymore (see Babel's security policy), hence there is no patch planned for babel-traverse@6.
@babel/traverse to v7.23.2 or higher. You can do this by deleting it from your package manager's lockfile and re-installing the dependencies. @babel/core >=7.23.2 will automatically pull in a non-vulnerable version.@babel/traverse and are using one of the affected packages mentioned above, upgrade them to their latest version to avoid triggering the vulnerable code path in affected @babel/traverse versions:
@babel/plugin-transform-runtime v7.23.2@babel/preset-env v7.23.2@babel/helper-define-polyfill-provider v0.4.3babel-plugin-polyfill-corejs2 v0.4.6babel-plugin-polyfill-corejs3 v0.8.5babel-plugin-polyfill-es-shims v0.10.0babel-plugin-polyfill-regenerator v0.5.3