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CVE-2018-5382

Estado: ModificadaMedia (4.4)—

The default BKS keystore use an HMAC that is only 16 bits long, which can allow an attacker to compromise the integrity of a BKS keystore. Bouncy Castle release 1.47 changes the BKS format to a format which uses a 160 bit HMAC instead. This applies to any BKS keystore generated prior to BC 1.47. For situations where people need to create the files for legacy reasons a specific keystore type "BKS-V1" was introduced in 1.49. It should be noted that the use of "BKS-V1" is discouraged by the library authors and should only be used where it is otherwise safe to do so, as in where the use of a 16 bit checksum for the file integrity check is not going to cause a security issue in itself.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (3)

Bouncycastle — Bc-javaRedhat — SatelliteRedhat — Satellite Capsule

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2018-5382",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 3.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.4,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "cret@cert.org",
      "affectedData": [
        {
          "vendor": "Legion of the Bouncy Castle",
          "product": "Bouncy Castle",
          "versions": [
            {
              "status": "affected",
              "version": "all",
              "lessThan": "1.47",
              "versionType": "custom"
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  "published": "2018-04-16T14:29:01.047",
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      "url": "http://www.securityfocus.com/bid/103453",
      "tags": [
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      "source": "cret@cert.org"
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      "tags": [
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      "source": "cret@cert.org"
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      "url": "https://www.kb.cert.org/vuls/id/306792",
      "tags": [
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        "US Government Resource"
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      "source": "cret@cert.org"
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    {
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      "tags": [
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      "source": "cret@cert.org"
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cret@cert.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-327"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-354"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The default BKS keystore use an HMAC that is only 16 bits long, which can allow an attacker to compromise the integrity of a BKS keystore. Bouncy Castle release 1.47 changes the BKS format to a format which uses a 160 bit HMAC instead. This applies to any BKS keystore generated prior to BC 1.47. For situations where people need to create the files for legacy reasons a specific keystore type \"BKS-V1\" was introduced in 1.49. It should be noted that the use of \"BKS-V1\" is discouraged by the library authors and should only be used where it is otherwise safe to do so, as in where the use of a 16 bit checksum for the file integrity check is not going to cause a security issue in itself."
    },
    {
      "lang": "es",
      "value": "El almacén de claves BKS por defecto utiliza un HMAC de sólo 16 bits, lo que puede permitir a un atacante comprometer la integridad de un almacén de claves BKS. La versión 1.47 de Bouncy Castle cambia el formato BKS a un formato que utiliza un HMAC de 160 bits. Esto se aplica a cualquier almacén de claves BKS generado antes de BC 1.47. Para las situaciones en las que la gente necesita crear los archivos por razones de legado, se introdujo un tipo de almacén de claves específico \"BKS-V1\" en la versión 1.49. Hay que tener en cuenta que los autores de la biblioteca desaconsejan el uso de \"BKS-V1\" y que sólo debe utilizarse cuando sea seguro hacerlo, como cuando el uso de una suma de comprobación de 16 bits para la comprobación de la integridad del archivo no vaya a causar un problema de seguridad en sí mismo"
    }
  ],
  "lastModified": "2026-06-17T02:00:13.640",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndIncluding": "1.49"
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  "sourceIdentifier": "cret@cert.org"
}