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Ubuntu: (Multiple Advisories) (CVE-2021-43540): Firefox vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2021-43540): Firefox vulnerabilities

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
12/08/2021
Created
12/28/2021
Added
12/10/2021
Modified
03/22/2023

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)

  • ubuntu-upgrade-firefox

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