Headline
GHSA-67hx-6x53-jw92: Babel vulnerable to arbitrary code execution when compiling specifically crafted malicious code
Impact
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-envwhen using itsuseBuiltInsoption- Any “polyfill provider” plugin that depends on
@babel/helper-define-polyfill-provider, such asbabel-plugin-polyfill-corejs3,babel-plugin-polyfill-corejs2,babel-plugin-polyfill-es-shims,babel-plugin-polyfill-regenerator
No other plugins under the @babel/ namespace are impacted, but third-party plugins might be.
Users that only compile trusted code are not impacted.
Patches
The vulnerability has been fixed in @babel/[email protected].
Babel 6 does not receive security fixes anymore (see Babel’s security policy), hence there is no patch planned for babel-traverse@6.
Workarounds
- Upgrade
@babel/traverseto 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. - If you cannot upgrade
@babel/traverseand 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/traverseversions:@babel/plugin-transform-runtimev7.23.2@babel/preset-envv7.23.2@babel/helper-define-polyfill-providerv0.4.3babel-plugin-polyfill-corejs2v0.4.6babel-plugin-polyfill-corejs3v0.8.5babel-plugin-polyfill-es-shimsv0.10.0babel-plugin-polyfill-regeneratorv0.5.3
- GitHub Advisory Database
- GitHub Reviewed
- CVE-2023-45133
Babel vulnerable to arbitrary code execution when compiling specifically crafted malicious code
Critical severity GitHub Reviewed Published Oct 12, 2023 in babel/babel • Updated Oct 16, 2023
Package
npm @babel/traverse (npm)
Affected versions
< 7.23.2
>= 8.0.0-alpha.0, < 8.0.0-alpha.4
Patched versions
7.23.2
8.0.0-alpha.4
Impact
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
- Any “polyfill provider” plugin that depends on @babel/helper-define-polyfill-provider, such as babel-plugin-polyfill-corejs3, babel-plugin-polyfill-corejs2, babel-plugin-polyfill-es-shims, babel-plugin-polyfill-regenerator
No other plugins under the @babel/ namespace are impacted, but third-party plugins might be.
Users that only compile trusted code are not impacted.
Patches
The vulnerability has been fixed in @babel/[email protected].
Babel 6 does not receive security fixes anymore (see Babel’s security policy), hence there is no patch planned for babel-traverse@6.
Workarounds
- Upgrade @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.
- If you cannot upgrade @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 v0.4.3
- babel-plugin-polyfill-corejs2 v0.4.6
- babel-plugin-polyfill-corejs3 v0.8.5
- babel-plugin-polyfill-es-shims v0.10.0
- babel-plugin-polyfill-regenerator v0.5.3
References
- GHSA-67hx-6x53-jw92
- https://nvd.nist.gov/vuln/detail/CVE-2023-45133
- babel/babel#16033
- babel/babel@b13376b
- https://github.com/babel/babel/releases/tag/v7.23.2
- https://github.com/babel/babel/releases/tag/v8.0.0-alpha.4
Published to the GitHub Advisory Database
Oct 16, 2023
Last updated
Oct 16, 2023
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Debian Linux Security Advisory 5528-1 - William Khem-Marquez discovered that using malicious plugins for the the Babel JavaScript compiler could result in arbitrary code execution during compilation.
Babel is a compiler for writingJavaScript. In `@babel/traverse` prior to versions 7.23.2 and 8.0.0-alpha.4 and all versions of `babel-traverse`, 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; and any "polyfill provider" plugin that depends on `@babel/helper-define-polyfill-provider`, such as `babel-plugin-polyfill-corejs3`, `babel-plugin-polyfill-corejs2`, `babel-plugin-polyfill-es-shims`, `babel-plugin-polyfill-regenerator`. No 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/[email protected]` and `@babel/[email protected]`. Those who cannot...