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OpenAdvisories
High USN-6456-1 9 CVEs

firefox vulnerabilities

Published Oct 30, 2023 · Updated Apr 22, 2026

Ecosystem: Ubuntu

Summary

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, obtain sensitive
information across domains, or execute arbitrary code. (CVE-2023-5722,
CVE-2023-5724, CVE-2023-5728, CVE-2023-5729, CVE-2023-5730, CVE-2023-5731)

Kelsey Gilbert discovered that Firefox did not properly manage certain
browser prompts and dialogs due to an insufficient activation-delay. An
attacker could potentially exploit this issue to perform clickjacking.
(CVE-2023-5721)

Daniel Veditz discovered that Firefox did not properly validate a cookie
containing invalid characters. An attacker could potentially exploit this
issue to cause a denial of service. (CVE-2023-5723)

Shaheen Fazim discovered that Firefox did not properly validate the URLs
open by installed WebExtension. An attacker could potentially exploit this
issue to obtain sensitive information. (CVE-2023-5725)

Fixed packages 1

ReleasePackageFixed in
Ubuntu · 20.04 LTS 20.04:LTS firefox 119.0+build2-0ubuntu0.20.04.1

Vulnerabilities 9

References

  • report
    https://ubuntu.com/security/CVE-2023-5721
  • report
    https://ubuntu.com/security/CVE-2023-5722
  • report
    https://ubuntu.com/security/CVE-2023-5723
  • report
    https://ubuntu.com/security/CVE-2023-5724
  • report
    https://ubuntu.com/security/CVE-2023-5725
  • report
    https://ubuntu.com/security/CVE-2023-5728
  • report
    https://ubuntu.com/security/CVE-2023-5729
  • report
    https://ubuntu.com/security/CVE-2023-5730
  • report
    https://ubuntu.com/security/CVE-2023-5731