CVE-2017-7843

7.5 HIGH
Published: June 11, 2018 Modified: November 25, 2025
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://www.securityfocus.com/bid/102039
Source: security@mozilla.org
Issue Tracking Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/102112
Source: security@mozilla.org
Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039954
Source: security@mozilla.org
Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:3382
Source: security@mozilla.org
Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1410106
Source: security@mozilla.org
Exploit Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00003.html
Source: security@mozilla.org
Third Party Advisory
https://www.debian.org/security/2017/dsa-4062
Source: security@mozilla.org
Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2017-27/
Source: security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-28/
Source: security@mozilla.org
Vendor Advisory
http://www.securityfocus.com/bid/102039
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/102112
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039954
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:3382
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1410106
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00003.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.debian.org/security/2017/dsa-4062
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2017-27/
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-28/
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

18 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
1.1%
77th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-200

Affected Vendors

mozilla debian redhat

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