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CVE-2020-4462

Estado: ModificadaAlta (8.2)—

IBM Sterling External Authentication Server 6.0.1, 6.0.0, 2.4.3.2, and 2.4.2 and IBM Sterling Secure Proxy 6.0.1, 6.0.0, 3.4.3, and 3.4.2 are vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 181482.

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 (2)

IBM — Sterling External Authentication ServerIBM — Sterling Secure Proxy

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-4462",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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    "cvssMetricV30": [
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        "type": "Secondary",
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        "cvssData": {
          "scope": "UNCHANGED",
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          "baseScore": 8.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 4.2,
        "exploitabilityScore": 3.9
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    ],
    "cvssMetricV31": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "version": "3.1",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L",
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          "attackComplexity": "LOW",
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          "confidentialityImpact": "HIGH"
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        "exploitabilityScore": 3.9
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  },
  "affected": [
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      "affectedData": [
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          "vendor": "IBM",
          "product": "Sterling Secure Proxy",
          "versions": [
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              "status": "affected",
              "version": "3.4.2"
            },
            {
              "status": "affected",
              "version": "3.4.3"
            },
            {
              "status": "affected",
              "version": "2.4.3"
            },
            {
              "status": "affected",
              "version": "2.4.2"
            },
            {
              "status": "affected",
              "version": "6.0.1"
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            {
              "status": "affected",
              "version": "6.0.0"
            }
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        },
        {
          "vendor": "IBM",
          "product": "External Authentication Server",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "status": "affected",
              "version": "6.0.1"
            }
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        },
        {
          "vendor": "IBM",
          "product": "Sterling External Authentication Server",
          "versions": [
            {
              "status": "affected",
              "version": "2.4.2"
            },
            {
              "status": "affected",
              "version": "2.4.3.2"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-07-16T15:15:28.080",
  "references": [
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/181482",
      "tags": [
        "VDB Entry",
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    },
    {
      "url": "https://www.ibm.com/support/pages/node/6249317",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    },
    {
      "url": "https://www.ibm.com/support/pages/node/6249331",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/181482",
      "tags": [
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        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://www.ibm.com/support/pages/node/6249331",
      "tags": [
        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-611"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM Sterling External Authentication Server 6.0.1, 6.0.0, 2.4.3.2, and 2.4.2 and IBM Sterling Secure Proxy 6.0.1, 6.0.0, 3.4.3, and 3.4.2 are vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 181482."
    },
    {
      "lang": "es",
      "value": "IBM Sterling External Authentication Server versiones 6.0.1, 6.0.0, 2.4.3.2 y 2.4.2 e IBM Sterling Secure Proxy versiones 6.0.1, 6.0.0, 3.4.3 y 3.4.2, son vulnerables a un ataque de tipo XML External Entity Injection (XXE) al procesar datos XML. Un atacante remoto podría explotar esta vulnerabilidad para exponer información confidencial o consumir recursos de memoria.  IBM X-Force ID: 181482"
    }
  ],
  "lastModified": "2026-06-17T03:20:00.730",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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}