The Electron framework enables writing cross-platform desktop applications using JavaScript, HTML and CSS. In versions prior to 21.0.0-beta.1, 20.0.1, 19.0.11, and 18.3.7, Electron is vulnerable to Exposure of Sensitive Information. When following a redirect, Electron delays a check for redirecting to file:// URLs from other schemes. The contents of the file is not available to the renderer following the redirect, but if the redirect target is a SMB URL such as file://some.website.com/, then in some cases, Windows will connect to that server and attempt NTLM authentication, which can include sending hashed credentials.This issue has been patched in versions: 21.0.0-beta.1, 20.0.1, 19.0.11, and 18.3.7. Users are recommended to upgrade to the latest stable version of Electron. If upgrading isnt possible, this issue can be addressed without upgrading by preventing redirects to file:// URLs in the WebContents.on(will-redirect) event, for all WebContents as a workaround.
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Electron | Electronjs | * | 18.3.7 (excluding) |
| Electron | Electronjs | 19.0.0 (including) | 19.0.11 (excluding) |
| Electron | Electronjs | 20.0.0 (including) | 20.0.1 (excluding) |
| Electron | Electronjs | 21.0.0 (including) | 21.0.0 (including) |
| Electron | Electronjs | 21.0.0-alpha1 (including) | 21.0.0-alpha1 (including) |
| Electron | Electronjs | 21.0.0-alpha2 (including) | 21.0.0-alpha2 (including) |
| Electron | Electronjs | 21.0.0-alpha3 (including) | 21.0.0-alpha3 (including) |
| Electron | Electronjs | 21.0.0-alpha4 (including) | 21.0.0-alpha4 (including) |
| Electron | Electronjs | 21.0.0-alpha5 (including) | 21.0.0-alpha5 (including) |
| Electron | Electronjs | 21.0.0-alpha6 (including) | 21.0.0-alpha6 (including) |