Missing Authorization Affecting firefox package, versions <86.0+build3-0ubuntu1


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.1% (44th percentile)

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  • Snyk IDSNYK-UBUNTU2104-FIREFOX-1256128
  • published27 Feb 2021
  • disclosed26 Feb 2021

Introduced: 26 Feb 2021

CVE-2021-23975  (opens in a new tab)
CWE-862  (opens in a new tab)

How to fix?

Upgrade Ubuntu:21.04 firefox to version 86.0+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.

The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes. When this function was invoked we incorrectly called the sizeof function, instead of using the API method that checks for invalid pointers. This vulnerability affects Firefox < 86.

CVSS Scores

version 3.1