CVE-2017-7843
firefox: When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerp...
CVE-2017-7843 is fixed in 4 products on 1 platform, first by firefox 57.0.1+build2-0ubuntu1, released June 11, 2018. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0289
86th percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| firefox · Ubuntu 18.04.6 LTS (bionic) | 57.0.1+build2-0ubuntu1 | firefox 57.0.1+build2-0ubuntu1 | Jun 11, 2018 |
| firefox-globalmenu · Ubuntu 18.04.6 LTS (bionic) | 57.0.1+build2-0ubuntu1 | firefox-globalmenu 57.0.1+build2-0ubuntu1 | Jun 11, 2018 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 57.0.1+build2-0ubuntu1 | firefox-mozsymbols 57.0.1+build2-0ubuntu1 | Jun 11, 2018 |
| firefox-testsuite · Ubuntu 18.04.6 LTS (bionic) | 57.0.1+build2-0ubuntu1 | firefox-testsuite 57.0.1+build2-0ubuntu1 | Jun 11, 2018 |