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OpenAdvisories
Unscored USN-4443-1 9 CVEs

firefox vulnerabilities

Published Jul 29, 2020 · Updated Apr 22, 2026

Ecosystem: Ubuntu

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, obtain sensitive
information, bypass iframe sandbox restrictions, confuse the user, or
execute arbitrary code. (CVE-2020-6463, CVE-2020-6514, CVE-2020-15652,
CVE-2020-15653, CVE-2020-15654, CVE-2020-15656, CVE-2020-15658,
CVE-2020-15659)

It was discovered that redirected HTTP requests which are observed or
modified through a web extension could bypass existing CORS checks. If a
user were tricked in to installing a specially crafted extension, an
attacker could potentially exploit this to obtain sensitive information
across origins. (CVE-2020-15655)

Fixed packages 3

ReleasePackageFixed in
Ubuntu · 16.04 LTS 16.04:LTS firefox 79.0+build1-0ubuntu0.16.04.2
Ubuntu · 18.04 LTS 18.04:LTS firefox 79.0+build1-0ubuntu0.18.04.1
Ubuntu · 20.04 LTS 20.04:LTS firefox 79.0+build1-0ubuntu0.20.04.1

Vulnerabilities 9

References

  • report
    https://ubuntu.com/security/CVE-2020-6463
  • report
    https://ubuntu.com/security/CVE-2020-6514
  • report
    https://ubuntu.com/security/CVE-2020-15652
  • report
    https://ubuntu.com/security/CVE-2020-15653
  • report
    https://ubuntu.com/security/CVE-2020-15654
  • report
    https://ubuntu.com/security/CVE-2020-15655
  • report
    https://ubuntu.com/security/CVE-2020-15656
  • report
    https://ubuntu.com/security/CVE-2020-15658
  • report
    https://ubuntu.com/security/CVE-2020-15659