Improper Privilege Management Affecting firefox-esr package, versions <78.10.0esr-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.34% (73rd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOXESR-1251776
  • published20 Apr 2021
  • disclosed24 Jun 2021

Introduced: 20 Apr 2021

CVE-2021-23999  (opens in a new tab)
CWE-269  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox-esr to version 78.10.0esr-1 or higher.

NVD Description

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

If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

CVSS Scores

version 3.1