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CVE-2020-13132

Estado: ModificadaMedia (4.6)—

An issue was discovered in Yubico libykpiv before 2.1.0. An attacker can trigger an incorrect free() in the ykpiv_util_generate_key() function in lib/util.c through incorrect error handling code. This could be used to cause a denial of service attack.

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)

Yubico — LibykpivYubico — PIV Tool ManagerYubico — Yubikey Smart Card Minidriver

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2020-13132",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.1,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
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        "userInteractionRequired": false
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          "baseScore": 4.3,
          "attackVector": "PHYSICAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
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          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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    "cvssMetricV31": [
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          "attackVector": "PHYSICAL",
          "baseSeverity": "MEDIUM",
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  "affected": [
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              "status": "affected",
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  "published": "2020-07-09T18:15:10.663",
  "references": [
    {
      "url": "https://blog.inhq.net/posts/yubico-libykpiv-vuln/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
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    {
      "url": "https://www.yubico.com/support/security-advisories/ysa-2020-02/",
      "tags": [
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    {
      "url": "https://blog.inhq.net/posts/yubico-libykpiv-vuln/",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://www.yubico.com/support/security-advisories/ysa-2020-02/",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-763"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Yubico libykpiv before 2.1.0. An attacker can trigger an incorrect free() in the ykpiv_util_generate_key() function in lib/util.c through incorrect error handling code. This could be used to cause a denial of service attack."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en Yubico libykpiv versiones anteriores a 2.1.0. Un atacante puede desencadenar un free() incorrecto en la función ykpiv_util_generate_key() en la biblioteca lib/util.c por medio de un código de manejo de errores incorrecto. Esto podría ser usado para causar un ataque de denegación de servicio"
    }
  ],
  "lastModified": "2026-06-17T02:52:40.417",
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