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CVE-2017-7843

Date: June 11, 2018

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.

Severity Score

Related Resources (14)

https://bugzilla.mozilla.org/show_bug.cgi?id=1410106
https://access.redhat.com/errata/RHSA-2017:3382
http://www.securityfocus.com/bid/102112
https://lists.debian.org/debian-lts-announce/2017/12/msg00003.html
https://www.mozilla.org/security/advisories/mfsa2017-28/
https://nvd.nist.gov/vuln/detail/CVE-2017-7843
http://www.securitytracker.com/id/1039954
https://www.mozilla.org/security/advisories/mfsa2017-27/
https://people.canonical.com/~ubuntu-security/cve/CVE-2017-7843
http://www.securityfocus.com/bid/102039
https://www.debian.org/security/2017/dsa-4062
https://security-tracker.debian.org/tracker/CVE-2017-7843
https://access.redhat.com/security/cve/CVE-2017-7843
https://www.mend.io/vulnerability-database/CVE-2017-7843

Severity Score

Weakness Type (CWE)

Information Leak / Disclosure

CWE-200

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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