GHSA-f37v-82c4-4x64 Electron: Crash in clipboard.readImage() on malformed clipboard image data

• npm electron: < 39.8.5 → fixed in 39.8.5 • npm electron: >= 40.0.0-alpha.1, < 40.8.5 → fixed in 40.8.5 • npm electron: >= 41.0.0-alpha.1, < 41.1.0 → fixed in 41.1.0 • npm electron: >= 42.0.0-alpha.1, < 42.0.0-alpha.5 → fixed in 42.0.0-alpha.5

Impact Apps that call `clipboard.readImage()` may be vulnerable to a denial of service. If the system clipboard contains image data that fails to decode, the resulting null bitmap is passed unchecked to image construction, triggering a controlled abort and crashing the process. Apps are only affected if they call `clipboard.readImage()`. Apps that do not read images from the clipboard are not affected. This issue does not allow memory corruption or code execution. Workarounds Validate that the clipboard contains image data via `clipboard.availableFormats()` before calling `clipboard.readImage()`. Note this only narrows the window — upgrading to a fixed version is recommended. Fixed Versions • `42.0.0-alpha.5` • `41.1.0` • `40.8.5` • `39.8.5` For more information If you have any questions or comments about this advisory, email us at [email protected]