Vulnerability · Published Sep 6, 2023 · Assigned by GitHub_M
CVE-2023-23623Content-Secrity-Policy disabling eval not applied consistently in renderers with sandbox disabled in Electron
High 7.5
In plain English
A high-severity security flaw in electron from electron. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Electron is a framework which lets you write cross-platform desktop applications using JavaScript, HTML and CSS. A Content-Security-Policy that disables eval, specifically setting a `script-src` directive and _not_ providing `unsafe-eval` in that directive, is not respected in renderers that have sandbox disabled. i.e. `sandbox: false` in the `webPreferences` object. This allows usage of methods like `eval()` and `new Function` unexpectedly which can result in an expanded attack surface. This issue only ever affected the 22 and 23 major versions of Electron and has been fixed in the latest versions of those release lines. Specifically, these versions contain the fixes: 22.0.1 and 23.0.0-alpha.2 We recommend all apps upgrade to the latest stable version of Electron. If upgrading isn't possible, this issue can be addressed without upgrading by enabling `sandbox: true` on all renderers.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | electron | 22.0.1 | GHSA-gxh7-wv9q-fwfr |
| npm | electron | 23.0.0-alpha.2 | GHSA-gxh7-wv9q-fwfr |
Affected products (as reported)
Weakness: CWE-670 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/electron/electron/security/advisories/GHSA-gxh7-wv9q-fwfr x_refsource_CONFIRM