Headline
CVE-2022-29247
Electron is a framework for writing cross-platform desktop applications using JavaScript (JS), HTML, and CSS. A vulnerability in versions prior to 18.0.0-beta.6, 17.2.0, 16.2.6, and 15.5.5 allows a renderer with JS execution to obtain access to a new renderer process with nodeIntegrationInSubFrames enabled which in turn allows effective access to ipcRenderer. The nodeIntegrationInSubFrames option does not implicitly grant Node.js access. Rather, it depends on the existing sandbox setting. If an application is sandboxed, then nodeIntegrationInSubFrames just gives access to the sandboxed renderer APIs, which include ipcRenderer. If the application then additionally exposes IPC messages without IPC senderFrame validation that perform privileged actions or return confidential data this access to ipcRenderer can in turn compromise your application / user even with the sandbox enabled. Electron versions 18.0.0-beta.6, 17.2.0, 16.2.6, and 15.5.5 contain a fix for this issue. As a workaround, ensure that all IPC message handlers appropriately validate senderFrame.
Impact
This vulnerability allows a renderer with JS execution to obtain access to a new renderer process with nodeIntegrationInSubFrames enabled which in turn allows effective access to ipcRenderer.
Please note the misleadingly named nodeIntegrationInSubFrames option does not implicitly grant Node.js access rather it depends on the existing sandbox setting. If your application is sandboxed then nodeIntegrationInSubFrames just gives access to the sandboxed renderer APIs (which includes ipcRenderer).
If your application then additionally exposes IPC messages without IPC senderFrame validation that perform privileged actions or return confidential data this access to ipcRenderer can in turn compromise your application / user even with the sandbox enabled.
Patches
This has been patched and the following Electron versions contain the fix:
- 18.0.0-beta.6
- 17.2.0
- 16.2.6
- 15.5.5
Workarounds
Ensure that all IPC message handlers appropriately validate senderFrame as per our security tutorial here.
For more information
If you have any questions or comments about this advisory, email us at [email protected].
Related news
### Impact This vulnerability allows a renderer with JS execution to obtain access to a new renderer process with `nodeIntegrationInSubFrames` enabled which in turn allows effective access to `ipcRenderer`. Please note the misleadingly named `nodeIntegrationInSubFrames` option does not implicitly grant Node.js access rather it depends on the existing `sandbox` setting. If your application is sandboxed then `nodeIntegrationInSubFrames` just gives access to the sandboxed renderer APIs (which includes `ipcRenderer`). If your application then additionally exposes IPC messages without IPC `senderFrame` validation that perform privileged actions or return confidential data this access to `ipcRenderer` can in turn compromise your application / user even with the sandbox enabled. ### Patches This has been patched and the following Electron versions contain the fix: * `18.0.0-beta.6` * `17.2.0` * `16.2.6` * `15.5.5` ### Workarounds Ensure that all IPC message handlers appropriately valida...