Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. A vulnerability in versions prior to 11.5.0, 12.1.0, and 13.3.0 allows a sandboxed renderer to request a "thumbnail" image of an arbitrary file on the user's system. The thumbnail can potentially include significant parts of the original file, including textual data in many cases. Versions 15.0.0-alpha.10, 14.0.0, 13.3.0, 12.1.0, and 11.5.0 all contain a fix for the vulnerability. Two workarounds aside from upgrading are available. One may make the vulnerability significantly more difficult for an attacker to exploit by enabling `contextIsolation` in one's app. One may also disable the functionality of the `createThumbnailFromPath` API if one does not need it.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2021-10-12T19:05:11

Updated: 2024-08-04T01:58:18.275Z

Reserved: 2021-08-16T00:00:00

Link: CVE-2021-39184

cve-icon Vulnrichment

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cve-icon NVD

Status : Modified

Published: 2021-10-12T19:15:07.987

Modified: 2024-11-21T06:18:49.693

Link: CVE-2021-39184

cve-icon Redhat

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