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OpenAdvisories
Critical USN-5321-2 7 CVEs

firefox vulnerabilities

Published Mar 17, 2022 · Updated Apr 22, 2026

Ecosystem: Ubuntu

Summary

USN-5321-1 fixed vulnerabilities in Firefox. The update didn't include
arm64 because of a regression. This update provides the corresponding
update for arm64.

This update also removes Yandex and Mail.ru as optional search providers
in the drop-down search menu.

Original advisory details:

Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, spoof the browser
UI, bypass security restrictions, obtain sensitive information, or execute
arbitrary code. (CVE-2022-0843, CVE-2022-26381, CVE-2022-26382,
CVE-2022-26383, CVE-2022-26384, CVE-2022-26385)

A TOCTOU bug was discovered when verifying addon signatures during
install. A local attacker could potentially exploit this to trick a
user into installing an addon with an invalid signature.
(CVE-2022-26387)

Fixed packages 2

ReleasePackageFixed in
Ubuntu · 18.04 LTS 18.04:LTS firefox 98.0.1+build2-0ubuntu0.18.04.1
Ubuntu · 20.04 LTS 20.04:LTS firefox 98.0.1+build2-0ubuntu0.20.04.1

Vulnerabilities 7

References

  • report
    https://ubuntu.com/security/CVE-2022-0843
  • report
    https://ubuntu.com/security/CVE-2022-26381
  • report
    https://ubuntu.com/security/CVE-2022-26382
  • report
    https://ubuntu.com/security/CVE-2022-26383
  • report
    https://ubuntu.com/security/CVE-2022-26384
  • report
    https://ubuntu.com/security/CVE-2022-26385
  • report
    https://ubuntu.com/security/CVE-2022-26387