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Information Exposure Affecting firefox package, versions <57.0.1+build2-0ubuntu0.16.04.1

Severity

 Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.4% (75th percentile)

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  • Snyk IDSNYK-UBUNTU1604-FIREFOX-424006
  • published11 Jun 2018
  • disclosed11 Jun 2018
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Introduced: 11 Jun 2018

CVE-2017-7843  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 firefox to version 57.0.1+build2-0ubuntu0.16.04.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

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.