Information Exposure Affecting firefox package, versions <69.0.1+build1-0ubuntu2


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.23% (86th percentile)

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  • Snyk IDSNYK-UBUNTU2104-FIREFOX-1266388
  • published3 Sept 2019
  • disclosed27 Sept 2019

Introduced: 3 Sep 2019

CVE-2019-11743  (opens in a new tab)
CWE-203  (opens in a new tab)

How to fix?

Upgrade Ubuntu:21.04 firefox to version 69.0.1+build1-0ubuntu2 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:21.04 relevant fixed versions and status.

Navigation events were not fully adhering to the W3C's "Navigation-Timing Level 2" draft specification in some instances for the unload event, which restricts access to detailed timing attributes to only be same-origin. This resulted in potential cross-origin information exposure of history through timing side-channel attacks. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.

CVSS Scores

version 3.1