CVE-2022-36077 – electron

Package

Manager: npm
Name: electron
Vulnerable Version: >=0 <18.3.7 || >=20.0.0-beta.1 <20.0.1 || >=19.0.0-beta.1 <19.0.11

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:L

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:L/SI:N/SA:N

EPSS: 0.00092 pctl0.26869

Details

Exfiltration of hashed SMB credentials on Windows via file:// redirect ### Impact 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. ### Patches This issue has been fixed in all current stable versions of Electron. Specifically, these versions contain the fixes: - 21.0.0-beta.1 - 20.0.1 - 19.0.11 - 18.3.7 We recommend all apps upgrade to the latest stable version of Electron. ### Workarounds If upgrading isn't possible, this issue can be addressed without upgrading by preventing redirects to file:// URLs in the `WebContents.on('will-redirect')` event, for all WebContents: ```js app.on('web-contents-created', (e, webContents) => { webContents.on('will-redirect', (e, url) => { if (/^file:/.test(url)) e.preventDefault() }) }) ``` ### For more information If you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org). ### Credit Thanks to user @coolcoolnoworries for reporting this issue.

Metadata

Created: 2022-11-10T12:38:57Z
Modified: 2022-11-10T12:38:57Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/11/GHSA-p2jh-44qj-pf2v/GHSA-p2jh-44qj-pf2v.json
CWE IDs: ["CWE-200", "CWE-522"]
Alternative ID: GHSA-p2jh-44qj-pf2v
Finding: F017
Auto approve: 1