vulnerability
MFSA2017-27 Firefox: Security vulnerabilities fixed in Firefox 57.0.1 (CVE-2017-7843)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:P/I:N/A:N) | Nov 29, 2017 | Dec 5, 2017 | Aug 11, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
Nov 29, 2017
Added
Dec 5, 2017
Modified
Aug 11, 2025
Description
When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely. IndexedDB should not be available in Private Browsing mode and this stored data will persist across multiple private browsing mode sessions because it is not cleared when exiting. This vulnerability affects Firefox ESR < 52.5.2 and Firefox < 57.0.1.
Solution
mozilla-firefox-upgrade-57_0_1
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.