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GHSA-67hx-6x53-jw92

CriticalCVSS 9.3 / 10
Published Oct 16, 2023·Last modified Apr 4, 2024
Affected Components(0)

No affected components available

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-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/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/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
Risk Scores
Base Score
9.3

The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
8.5

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
0.52%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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Critical severity
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