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{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Al utilizar Alt-Svc, ALPN no valid\u00f3 correctamente los certificados cuando el servidor original redireccionaba a un sitio inseguro. Esta vulnerabilidad afecta a Firefox &lt; 134 y Firefox ESR &lt; 128.6."}], "id": "CVE-2025-0239", "lastModified": "2025-01-13T22:15:15.057", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 1.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2025-01-07T16:15:38.563", "references": [{"source": "[email protected]", "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1929156"}, {"source": "[email protected]", "url": "https://www.mozilla.org/security/advisories/mfsa2025-01/"}, {"source": "[email protected]", "url": "https://www.mozilla.org/security/advisories/mfsa2025-02/"}, {"source": "[email protected]", "url": "https://www.mozilla.org/security/advisories/mfsa2025-04/"}, {"source": "[email protected]", "url": "https://www.mozilla.org/security/advisories/mfsa2025-05/"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-295"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2025:0132", "cpe": "cpe:/o:redhat:rhel_els:7", "package": "firefox-0:128.6.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "release_date": "2025-01-09T00:00:00Z"}, {"advisory": "RHSA-2025:0144", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:128.6.0-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-01-09T00:00:00Z"}, {"advisory": "RHSA-2025:0134", "cpe": "cpe:/a:redhat:rhel_aus:8.4", "package": "firefox-0:128.6.0-1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "release_date": "2025-01-09T00:00:00Z"}, {"advisory": "RHSA-2025:0134", "cpe": "cpe:/a:redhat:rhel_tus:8.4", "package": "firefox-0:128.6.0-1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Telecommunications Update Service", "release_date": "2025-01-09T00:00:00Z"}, {"advisory": "RHSA-2025:0134", "cpe": "cpe:/a:redhat:rhel_e4s:8.4", "package": "firefox-0:128.6.0-1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions", "release_date": "2025-01-09T00:00:00Z"}, {"advisory": "RHSA-2025:0080", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "firefox-0:128.6.0-1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-01-08T00:00:00Z"}, {"advisory": "RHSA-2025:0138", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "firefox-0:128.6.0-1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2025-01-09T00:00:00Z"}], "bugzilla": {"description": "firefox: Alt-Svc ALPN validation failure when redirected", "id": "2336170", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2336170"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "status": "verified"}, "cwe": "CWE-601", "details": ["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 ESR < 128.6.", "A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site."], "name": "CVE-2025-0239", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "firefox:flatpak/firefox", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-01-07T16:07:06Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-0239\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-0239\nhttps://bugzilla.mozilla.org/show_bug.cgi?id=1929156\nhttps://www.mozilla.org/security/advisories/mfsa2025-01/\nhttps://www.mozilla.org/security/advisories/mfsa2025-02/"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.", "threat_severity": "Moderate"}