CVE-2017-7843
Published: 11 June 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.
Priority
Status
Package | Release | Status |
---|---|---|
firefox Launchpad, Ubuntu, Debian |
upstream |
Released
(57.0.1)
|
xenial |
Released
(57.0.1+build2-0ubuntu0.16.04.1)
|
|
zesty |
Released
(57.0.1+build2-0ubuntu0.17.04.1)
|
|
artful |
Released
(57.0.1+build2-0ubuntu0.17.10.1)
|
|
bionic |
Released
(57.0.1+build2-0ubuntu1)
|
|
trusty |
Released
(57.0.1+build2-0ubuntu0.14.04.1)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |