Information Exposure Affecting firefox package, versions <74.0+build3-0ubuntu1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.18% (56th percentile)

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  • Snyk IDSNYK-UBUNTU2104-FIREFOX-1258007
  • published11 Mar 2020
  • disclosed25 Mar 2020

Introduced: 11 Mar 2020

CVE-2020-6809  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Ubuntu:21.04 firefox to version 74.0+build3-0ubuntu1 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.

When a Web Extension had the all-urls permission and made a fetch request with a mode set to 'same-origin', it was possible for the Web Extension to read local files. This vulnerability affects Firefox < 74.

CVSS Scores

version 3.1