fkie_cve-2025-6434
Vulnerability from fkie_nvd
Published
2025-06-24 13:15
Modified
2025-07-14 19:15
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Summary
The exception page for the HTTPS-Only feature, displayed when a website is opened via HTTP, lacked an anti-clickjacking delay, potentially allowing an attacker to trick a user into granting an exception and loading a webpage over HTTP. This vulnerability affects Firefox < 140 and Thunderbird < 140.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1955182Permissions Required
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-51/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-54/
Impacted products
Vendor Product Version
mozilla firefox *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "77D2BF2A-26A3-4664-93B5-B41BCF17AC9E",
              "versionEndExcluding": "140.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The exception page for the HTTPS-Only feature, displayed when a website is opened via HTTP, lacked an anti-clickjacking delay, potentially allowing an attacker to trick a user into granting an exception and loading a webpage over HTTP. This vulnerability affects Firefox \u003c 140 and Thunderbird \u003c 140."
    },
    {
      "lang": "es",
      "value": "La p\u00e1gina de excepci\u00f3n de la funci\u00f3n Solo HTTPS, que se mostraba al abrir un sitio web mediante HTTP, carec\u00eda de un retardo anti-clickjacking, lo que potencialmente permit\u00eda a un atacante enga\u00f1ar al usuario para que concediera una excepci\u00f3n y cargara una p\u00e1gina web mediante HTTP. Esta vulnerabilidad afecta a Firefox anterior a la versi\u00f3n 140."
    }
  ],
  "id": "CVE-2025-6434",
  "lastModified": "2025-07-14T19:15:35.130",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-06-24T13:15:24.447",
  "references": [
    {
      "source": "security@mozilla.org",
      "tags": [
        "Permissions Required"
      ],
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1955182"
    },
    {
      "source": "security@mozilla.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-51/"
    },
    {
      "source": "security@mozilla.org",
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-54/"
    }
  ],
  "sourceIdentifier": "security@mozilla.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1021"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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