FKIE_CVE-2024-7531

Vulnerability from fkie_nvd - Published: 2024-08-06 13:15 - Updated: 2025-03-19 16:15
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
6.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Summary
Calling `PK11_Encrypt()` in NSS using CKM_CHACHA20 and the same buffer for input and output can result in plaintext on an Intel Sandy Bridge processor. In Firefox this only affects the QUIC header protection feature when the connection is using the ChaCha20-Poly1305 cipher suite. The most likely outcome is connection failure, but if the connection persists despite the high packet loss it could be possible for a network observer to identify packets as coming from the same source despite a network path change. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, and Firefox ESR < 128.1.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1905691Issue Tracking, Permissions Required
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2024-33/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2024-34/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2024-35/Vendor Advisory
Impacted products
Vendor Product Version
mozilla firefox *
mozilla firefox_esr *
mozilla firefox_esr 128.0
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "12C9ABF7-3B44-4C24-B152-488DCF9E2D39",
              "versionEndExcluding": "129.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "95A2A856-7C7A-46A3-A2B5-967E63D7083A",
              "versionEndExcluding": "115.14.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox_esr:128.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "AE7D7BC3-F9A8-42D3-8C60-464457B7B2CC",
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Calling `PK11_Encrypt()` in NSS using CKM_CHACHA20 and the same buffer for input and output can result in plaintext on an Intel Sandy Bridge processor. In Firefox this only affects the QUIC header protection feature when the connection is using the ChaCha20-Poly1305 cipher suite. The most likely outcome is connection failure, but if the connection persists despite the high packet loss it could be possible for a network observer to identify packets as coming from the same source despite a network path change. This vulnerability affects Firefox \u003c 129, Firefox ESR \u003c 115.14, and Firefox ESR \u003c 128.1."
    },
    {
      "lang": "es",
      "value": "Llamar a `PK11_Encrypt()` en NSS usando CKM_CHACHA20 y el mismo b\u00fafer para entrada y salida puede generar texto plano en un procesador Intel Sandy Bridge. En Firefox, esto solo afecta la funci\u00f3n de protecci\u00f3n del encabezado QUIC cuando la conexi\u00f3n utiliza el conjunto de cifrado ChaCha20-Poly1305. El resultado m\u00e1s probable es una falla en la conexi\u00f3n, pero si la conexi\u00f3n persiste a pesar de la gran p\u00e9rdida de paquetes, un observador de la red podr\u00eda identificar que los paquetes provienen de la misma fuente a pesar de un cambio en la ruta de la red. Esta vulnerabilidad afecta a Firefox \u0026lt; 129, Firefox ESR \u0026lt; 115.14 y Firefox ESR \u0026lt; 128.1."
    }
  ],
  "id": "CVE-2024-7531",
  "lastModified": "2025-03-19T16:15:29.570",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
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        "impactScore": 3.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
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  },
  "published": "2024-08-06T13:15:57.787",
  "references": [
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      "source": "security@mozilla.org",
      "tags": [
        "Issue Tracking",
        "Permissions Required"
      ],
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1905691"
    },
    {
      "source": "security@mozilla.org",
      "tags": [
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      "url": "https://www.mozilla.org/security/advisories/mfsa2024-33/"
    },
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      "source": "security@mozilla.org",
      "tags": [
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      "url": "https://www.mozilla.org/security/advisories/mfsa2024-34/"
    },
    {
      "source": "security@mozilla.org",
      "tags": [
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      "url": "https://www.mozilla.org/security/advisories/mfsa2024-35/"
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  "sourceIdentifier": "security@mozilla.org",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
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      "source": "nvd@nist.gov",
      "type": "Primary"
    },
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      "description": [
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          "lang": "en",
          "value": "CWE-367"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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