Input validation error in Electron - CVE-2020-4075
Published: July 7, 2020 / Updated: August 8, 2020
Vulnerability identifier: #VU34171
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-4075
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Electron
Electron
Software vendor:
Electron
Electron
Description
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, arbitrary local file read is possible by defining unsafe window options on a child window opened via window.open. As a workaround, ensure you are calling `event.preventDefault()` on all new-window events where the `url` or `options` is not something you expect. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.
Remediation
Install update from vendor's website.