Vulnerability · Published Sep 6, 2023 · Assigned by GitHub_M
CVE-2023-29198Context isolation bypass via nested unserializable return value in Electron
Medium 6.0
In plain English
A medium-severity security flaw in electron from electron. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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`.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | electron | 22.3.6 | GHSA-p7v2-p9m8-qqg7 |
| npm | electron | 23.2.3 | GHSA-p7v2-p9m8-qqg7 |
| npm | electron | 24.0.1 | GHSA-p7v2-p9m8-qqg7 |
| npm | electron | 25.0.0-alpha.2 | GHSA-p7v2-p9m8-qqg7 |
Affected products (as reported)
Weakness: CWE-754 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L