by Kastro
Paper/Archive/CVE-2020-4077

CVE-2020-4077

electron electron — Context isolation bypass via contextBridge in Electron

EPSS 1%CVSS 9.9
critical.is priorityof 100
42
CVSS 9.9 (NVD)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 63.0.630 × 2012.6No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, there is a context isolation bypass. Code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. Apps using both `contextIsolation` and `contextBridge` are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.

Affected

ProductAffectedFixed inSource
electron>= 9.0.0-beta.0, <= 9.0.0-beta.20–CNA
electron>= 8.0.0, < 8.2.4–CNA
electron< 7.2.4–CNA

Scores by source

NVD9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GitHub_M (CNA)7.7CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

References

refgithub.com/electron/electron/security/advisories/GHSA-h9jc-284h-533grefelectronjs.org/releases/stable?page=3#release-notes-for-v824