Описание
Electron: Context isolation bypass via Function.prototype.bind hijack
Impact
Apps that expose Promise-returning functions to web content via contextBridge may be vulnerable to a context isolation bypass. Untrusted web content could obtain access to the isolated preload world and, through it, every capability the preload script has. In renderers without a sandbox, or with nodeIntegration enabled, this may escalate to Node.js access.
Apps are affected if they expose Promise-returning functions via contextBridge — the standard pattern for wrapping ipcRenderer.invoke — in windows that load untrusted content. Apps that never load untrusted content in those windows are not affected.
Workarounds
There are no app side workarounds, you must update to a patched version of Electron.
Fixed Versions
42.0.0-beta.541.2.240.9.239.8.9
For more information
If you have any questions or comments about this advisory, email Electron at security@electronjs.org
Пакеты
electron
< 39.8.9
39.8.9
electron
>= 40.0.0-alpha.1, < 40.9.2
40.9.2
electron
>= 41.0.0-alpha.1, < 41.2.2
41.2.2
electron
>= 42.0.0-alpha.1, < 42.0.0-beta.5
42.0.0-beta.5
Связанные уязвимости
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.5, apps that expose Promise-returning functions to web content via contextBridge may be vulnerable to a context isolation bypass. Untrusted web content could obtain access to the isolated preload world and, through it, every capability the preload script has. In renderers without a sandbox, or with nodeIntegration enabled, this may escalate to Node.js access. Apps are affected if they expose Promise-returning functions via contextBridge, the standard pattern for wrapping ipcRenderer.invoke, in windows that load untrusted content. This issue is fixed in versions 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.5.
Electron is a framework for writing cross-platform desktop application ...
Уязвимость механизма изоляции контекстов contextIsolation программной платформы для создания приложений Electron, позволяющая нарушителю получить полный доступ к системе