Rapid7 Vulnerability & Exploit Database

MFSA2021-52 Firefox: Security Vulnerabilities fixed in Firefox 95 (CVE-2021-43540)

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MFSA2021-52 Firefox: Security Vulnerabilities fixed in Firefox 95 (CVE-2021-43540)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
12/07/2021
Created
12/09/2021
Added
12/08/2021
Modified
12/13/2021

Description

WebExtensions with the correct permissions were able to create and install ServiceWorkers for third-party websites that would not have been uninstalled with the extension. This vulnerability affects Firefox < 95.

Solution(s)

  • mozilla-firefox-upgrade-95_0

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