CVE-2023-29198

Context isolation bypass via nested unserializable return value in Electron

State
Published
Severity
6.0 Medium
Published
Sep 6, 2023
Updated
Sep 26, 2024
Reserved
Apr 3, 2023

Read the record on cve.org

Description

Electron is a framework which lets you write cross-platform desktop applications using JavaScript, HTML and CSS. Electron apps using `contextIsolation` and `contextBridge` are affected. This is a context isolation bypass, meaning that code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. This issue is only exploitable if an API exposed to the main world via `contextBridge` can return an object or array that contains a javascript object which cannot be serialized, for instance, a canvas rendering context. This would normally result in an exception being thrown `Error: object could not be cloned`. The app side workaround is to ensure that such a case is not possible. Ensure all values returned from a function exposed over the context bridge are supported. This issue has been fixed in versions `25.0.0-alpha.2`, `24.0.1`, `23.2.3`, and `22.3.6`.

Scores

CVSSScoreVectorSource
3.16.0 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:LGitHub_M

Weaknesses

  • CWE-754 Improper Check for Unusual or Exceptional Conditions

Affected Products

ProductVersions
electronelectron
  • < 22.3.6Affected
  • >= 23.0.0, < 23.2.3Affected
  • >= 24.0.0, < 24.0.1Affected
  • >= 25.0.0-alpha.1, < 25.0.0-alpha.2Affected

References

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