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GHSA-v93f-fgjr-hjrj
electronelectronelectronImpact
Some window options supplied by web content in the window.open() features string were applied to the new BrowserWindow without an allowlist. Untrusted content could set window options it should not control, including options that cause the main process to access attacker-chosen file or network paths.
Apps are only affected if untrusted content can call window.open() and the app does not override child window options via setWindowOpenHandler. Apps that deny window.open() for untrusted content, or set overrideBrowserWindowOptions explicitly, are not affected.
Workarounds
Return { action: 'deny' } from setWindowOpenHandler for untrusted content, or supply overrideBrowserWindowOptions so every window option is set explicitly.
Fixed Versions
42.0.0-beta.341.2.140.9.039.8.8
For more information
If you have any questions or comments about this advisory, email Electron at security@electronjs.org
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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