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CVE-2021-20473

Estado: ModificadaMedia (6.5)—

IBM Sterling File Gateway User Interface 2.2.0.0 through 6.1.1.0 does not invalidate session after logout which could allow an authenticated user to impersonate another user on the system. IBM X-Force ID: 196944.

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 (1)

IBM — Sterling File Gateway

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-20473",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "psirt@us.ibm.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 6.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.4,
        "exploitabilityScore": 2.8
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@us.ibm.com",
      "affectedData": [
        {
          "vendor": "IBM",
          "product": "Sterling File Gateway",
          "versions": [
            {
              "status": "affected",
              "version": "2.2.0.0"
            },
            {
              "status": "affected",
              "version": "6.0.0.0"
            },
            {
              "status": "affected",
              "version": "5.2.6.5_3"
            },
            {
              "status": "affected",
              "version": "6.0.3.4"
            },
            {
              "status": "affected",
              "version": "6.1.0.0"
            },
            {
              "status": "affected",
              "version": "6.1.0.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-10-07T18:15:07.977",
  "references": [
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/196944",
      "tags": [
        "VDB Entry",
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    },
    {
      "url": "https://www.ibm.com/support/pages/node/6496785",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/196944",
      "tags": [
        "VDB Entry",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.ibm.com/support/pages/node/6496785",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-613"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM Sterling File Gateway User Interface 2.2.0.0 through 6.1.1.0 does not invalidate session after logout which could allow an authenticated user to impersonate another user on the system. IBM X-Force ID: 196944."
    },
    {
      "lang": "es",
      "value": "IBM Sterling File Gateway User Interface versiones 2.2.0.0 hasta 6.1.1.0, no invalida una sesión tras el cierre de sesión, que podría permitir a un usuario autenticado hacerse pasar por otro en el sistema. IBM X-Force ID: 196944"
    }
  ],
  "lastModified": "2026-06-17T03:33:53.437",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ibm:sterling_file_gateway:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2A181A5B-380F-4EE1-9E37-A2F7284CDFF5",
              "versionEndIncluding": "5.2.6.5_3",
              "versionStartIncluding": "2.2.0.0"
            },
            {
              "criteria": "cpe:2.3:a:ibm:sterling_file_gateway:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DB3B1F9B-913B-4A8B-86AD-7C8D490EEDC0",
              "versionEndIncluding": "6.0.3.4",
              "versionStartIncluding": "6.0.0.0"
            },
            {
              "criteria": "cpe:2.3:a:ibm:sterling_file_gateway:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "49430F2E-E2DE-438B-8595-455D5D914884",
              "versionEndIncluding": "6.1.0.1",
              "versionStartIncluding": "6.1.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com"
}