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Red Hat: CVE-2025-0239: firefox: Alt-Svc ALPN validation failure when redirected (Multiple Advisories)

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Red Hat: CVE-2025-0239: firefox: Alt-Svc ALPN validation failure when redirected (Multiple Advisories)

Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:N)
Published
01/07/2025
Created
01/11/2025
Added
01/10/2025
Modified
01/22/2025

Description

When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6.

Solution(s)

  • redhat-upgrade-firefox
  • redhat-upgrade-firefox-debuginfo
  • redhat-upgrade-firefox-debugsource
  • redhat-upgrade-firefox-x11
  • redhat-upgrade-thunderbird
  • redhat-upgrade-thunderbird-debuginfo
  • redhat-upgrade-thunderbird-debugsource

References

  • CVE-2025-0239
  • RHSA-2025:0080
  • RHSA-2025:0135
  • RHSA-2025:0137
  • RHSA-2025:0138
  • RHSA-2025:0144
  • RHSA-2025:0281
  • RHSA-2025:0284
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