Skip to content
OpenAdvisories
Unscored USN-4383-1 8 CVEs

firefox vulnerabilities

Published Jun 4, 2020 · Updated Apr 22, 2026

Summary

Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, spoof the
addressbar, or execute arbitrary code. (CVE-2020-12405, CVE-2020-12406,
CVE-2020-12407, CVE-2020-12408, CVE-2020-12409, CVE-2020-12410,
CVE-2020-12411)

It was discovered that NSS showed timing differences when performing DSA
signatures. An attacker could potentially exploit this to obtain private
keys using a timing attack. (CVE-2020-12399)

Fixed packages 3

ReleasePackageFixed in
Ubuntu · 16.04 LTS 16.04:LTS firefox 77.0.1+build1-0ubuntu0.16.04.1
Ubuntu · 18.04 LTS 18.04:LTS firefox 77.0.1+build1-0ubuntu0.18.04.1
Ubuntu · 20.04 LTS 20.04:LTS firefox 77.0.1+build1-0ubuntu0.20.04.1

Vulnerabilities 8

References

  • report
    https://ubuntu.com/security/CVE-2020-12399
  • report
    https://ubuntu.com/security/CVE-2020-12405
  • report
    https://ubuntu.com/security/CVE-2020-12406
  • report
    https://ubuntu.com/security/CVE-2020-12407
  • report
    https://ubuntu.com/security/CVE-2020-12408
  • report
    https://ubuntu.com/security/CVE-2020-12409
  • report
    https://ubuntu.com/security/CVE-2020-12410
  • report
    https://ubuntu.com/security/CVE-2020-12411