VDB
KO
MEDIUM 5.3

GHSA-3c8v-cfp5-9885

Electron: Out-of-bounds read in second-instance IPC on macOS and Linux

Details

### Impact On macOS and Linux, apps that call `app.requestSingleInstanceLock()` were vulnerable to an out-of-bounds heap read when parsing a crafted second-instance message. Leaked memory could be delivered to the app's `second-instance` event handler.

This issue is limited to processes running as the same user as the Electron app.

Apps that do not call `app.requestSingleInstanceLock()` are not affected. Windows is not affected by this issue.

### Workarounds There are no app side workarounds, developers must update to a patched version of Electron.

### Fixed Versions * `41.0.0` * `40.8.1` * `39.8.1` * `38.8.6`

### For more information If there are any questions or comments about this advisory, please email [security@electronjs.org](mailto:security@electronjs.org)

Are you affected?

Enter the version of the package you're using.

Affected packages

npm / electron
Introduced in: 0 Fixed in: 38.8.6
Fix npm install electron@38.8.6
npm / electron
Introduced in: 39.0.0-alpha.1 Fixed in: 39.8.1
Fix npm install electron@39.8.1
npm / electron
Introduced in: 40.0.0-alpha.1 Fixed in: 40.8.1
Fix npm install electron@40.8.1
npm / electron
Introduced in: 41.0.0-alpha.1 Fixed in: 41.0.0
Fix npm install electron@41.0.0

References