Vulnerability in Electron
CVE-2023-23623
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Electron — versions >= 22.0.0-beta.1, < 22.0.1, >= 23.0.0-alpha.1, < 23.0.0-alpha.2
- Electronjs Electron — versions 22.0.0, 23.0.0
Weakness classification (CWE)
References
- github.com/electron/electron/security/advisories/GHSA-gxh7-wv9q-fwfr (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-23623?
- CVE-2023-23623 is a high-severity vulnerability in Electron, classified under Always-Incorrect Control Flow Implementation. CVSS score: 7.5/10. Published 2023-09-06.
- How severe is CVE-2023-23623?
- High severity. CVSS v3 base score is 7.5 out of 10.