GHSA-67hx-6x53-jw92 CVE-2023-45133
Babel vulnerable to arbitrary code execution when compiling specifically crafted malicious code
- Severity
- 9.3 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 0.53%
- Chance of exploitation in the next 30 days. Higher than 44.51% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Fix
7.23.2- Upgrade @babel/traverse to this version or later
Description
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/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.
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
Affected versions
npm
| Package | Vulnerable | Fixed in |
|---|---|---|
| @babel/traverse | < 7.23.2 |
7.23.2 |
| @babel/traverse | >= 8.0.0-alpha.0, < 8.0.0-alpha.4 |
8.0.0-alpha.4 |
| babel-traverse | all versions |
No fix yet |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
@babel/traverse npm → 7.23.2
- npm
npm install @babel/traverse@7.23.2- yarn
yarn add @babel/traverse@7.23.2- pnpm
pnpm add @babel/traverse@7.23.2
Severity breakdown
CVSS 3.1 9.3
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Weakness
CWE-184: Incomplete List of Disallowed Inputs
The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete.
How to prevent it
- Implementation: Do not rely exclusively on detecting disallowed inputs. There are too many variants to encode a character, especially when different environments are used, so there is a high likelihood of missing some variants. Only use detection of disallowed inputs as a mechanism for detecting suspicious activity. Ensure that you are using other protection mechanisms that only identify "good" input - such as lists of allowed inputs - and ensure that you are properly encoding your outputs.
CWE-697: Incorrect Comparison
The product compares two entities in a security-relevant context, but the comparison is incorrect.
References
Advisories
Packages
Other links
- github.com/babel/babel/security/advisories/GHSA-67hx-6x53-jw92
- github.com/babel/babel/pull/16033
- github.com/babel/babel/commit/b13376b346946e3f62fc0848c1d2a23223314c82
- babeljs.io/blog/2023/10/16/cve-2023-45133
- github.com/babel/babel/releases/tag/v7.23.2
- github.com/babel/babel/releases/tag/v8.0.0-alpha.4
- lists.debian.org/debian-lts-announce/2023/10/msg00026.html
- debian.org/security/2023/dsa-5528
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-26mh-57q7-jfvr PraisonAI vulnerable to Remote Code Execution via Broken AST Sandbox | High | Same weakness, CWE-184 |
| GHSA-cf23-7qxj-xmhr Nginx UI: nginx config directive denylist (ValidateConfigFile) is bypassable via same-line ";" separation → authenticated directive injection (RCE on the official image) | High | Same weakness, CWE-184 |
| GHSA-p8wg-vrv2-v86f Handlebars: JavaScript Injection via Own Property Check Bypass | Critical | Same weakness, CWE-184 |
| GHSA-r7f2-6fj8-6fg2 Ghost: Private IP Filtering Bypass via IPv6 Transition Addresses | Medium | Same weakness, CWE-184 |
| GHSA-v3xr-g6p2-fvgv Ghost: Stored XSS via oEmbed Photo Responses | High | Same weakness, CWE-184 |
| GHSA-w66g-j6c4-hcfc MCP Atlassian: JIRA_PROJECTS_FILTER / CONFLUENCE_SPACES_FILTER allow forbidden-project content exfiltration (one LIVE-proven on Atlassian Cloud) | Medium | Same weakness, CWE-184 |
| GHSA-w27v-7q3p-w38r SVGO: removeScripts allows executable links through namespace and control-character bypasses | High | Same weakness, CWE-184 |
| PYSEC-2026-3763 openssl_encrypt versions before 1.4.0 contain a plugin sandbox bypass vulnerability where the PluginImportGuard blocks a different set of modules than the AST… | Critical | Same weakness, CWE-184 |
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