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.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-1202-1 firefox-esr security update
Debian DSA Debian DSA DSA-4062-1 firefox-esr security update
EUVD EUVD EUVD-2017-16818 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2024-08-05T16:19:28.564Z

Reserved: 2017-04-12T00:00:00

Link: CVE-2017-7843

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-06-11T21:29:11.920

Modified: 2024-11-21T03:32:46.900

Link: CVE-2017-7843

cve-icon Redhat

Severity : Important

Publid Date: 2017-12-04T00:00:00Z

Links: CVE-2017-7843 - Bugzilla

cve-icon OpenCVE Enrichment

No data.