cve-2021-42756
Vulnerability from cvelistv5
Published
2023-02-16 18:05
Modified
2024-10-23 14:49
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C
Summary
Multiple stack-based buffer overflow vulnerabilities [CWE-121] in the proxy daemon of FortiWeb 5.x all versions, 6.0.7 and below, 6.1.2 and below, 6.2.6 and below, 6.3.16 and below, 6.4 all versions may allow an unauthenticated remote attacker to achieve arbitrary code execution via specifically crafted HTTP requests.
References
psirt@fortinet.comhttps://fortiguard.com/psirt/FG-IR-21-186Vendor Advisory
Impacted products
FortinetFortiWeb
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T03:38:50.132Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://fortiguard.com/psirt/FG-IR-21-186",
            "tags": [
              "x_transferred"
            ],
            "url": "https://fortiguard.com/psirt/FG-IR-21-186"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-42756",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-23T14:19:11.590032Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-23T14:49:52.406Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "FortiWeb",
          "vendor": "Fortinet",
          "versions": [
            {
              "lessThanOrEqual": "6.4.1",
              "status": "affected",
              "version": "6.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.3.16",
              "status": "affected",
              "version": "6.3.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.6",
              "status": "affected",
              "version": "6.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.2",
              "status": "affected",
              "version": "6.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.7",
              "status": "affected",
              "version": "6.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.9.1",
              "status": "affected",
              "version": "5.9.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.8.7",
              "status": "affected",
              "version": "5.8.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.8.3",
              "status": "affected",
              "version": "5.8.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.7.3",
              "status": "affected",
              "version": "5.7.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.6.2",
              "status": "affected",
              "version": "5.6.0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.8.*",
              "status": "affected",
              "version": "5.8.0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.7.*",
              "status": "affected",
              "version": "5.7.0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.6.*",
              "status": "affected",
              "version": "5.6.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Multiple stack-based buffer overflow vulnerabilities\u00a0[CWE-121] in the proxy daemon of FortiWeb 5.x\u00a0all versions, 6.0.7 and below, 6.1.2 and below, 6.2.6 and below, 6.3.16 and below, 6.4\u00a0all versions may allow an unauthenticated remote attacker to achieve arbitrary code execution via specifically crafted HTTP requests."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "Execute unauthorized code or commands",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-02-16T18:05:39.442Z",
        "orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
        "shortName": "fortinet"
      },
      "references": [
        {
          "name": "https://fortiguard.com/psirt/FG-IR-21-186",
          "url": "https://fortiguard.com/psirt/FG-IR-21-186"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to FortiWeb 7.0.0 or above,\r\nUpgrade to FortiWeb 6.3.17 or above,\r\nUpgrade to FortiWeb 6.2.7 or above.\r\nUpgrade to FortiWeb 6.1.3 or above.\r\nUpgrade to FortiWeb 6.0.8 or above."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
    "assignerShortName": "fortinet",
    "cveId": "CVE-2021-42756",
    "datePublished": "2023-02-16T18:05:39.442Z",
    "dateReserved": "2021-10-20T17:44:45.604Z",
    "dateUpdated": "2024-10-23T14:49:52.406Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-42756\",\"sourceIdentifier\":\"psirt@fortinet.com\",\"published\":\"2023-02-16T19:15:11.500\",\"lastModified\":\"2023-11-07T03:39:14.427\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"Multiple stack-based buffer overflow vulnerabilities\u00a0[CWE-121] in the proxy daemon of FortiWeb 5.x\u00a0all versions, 6.0.7 and below, 6.1.2 and below, 6.2.6 and below, 6.3.16 and below, 6.4\u00a0all versions may allow an unauthenticated remote attacker to achieve arbitrary code execution via specifically crafted HTTP requests.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9},{\"source\":\"psirt@fortinet.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]},{\"source\":\"psirt@fortinet.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-121\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.6.0\",\"versionEndExcluding\":\"6.0.8\",\"matchCriteriaId\":\"D7C64AF2-21C5-4763-BF18-67B2D3D01614\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1.0\",\"versionEndExcluding\":\"6.1.3\",\"matchCriteriaId\":\"9EFA8AB9-2777-471C-A1DA-635BDACE2F10\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2.0\",\"versionEndExcluding\":\"6.2.7\",\"matchCriteriaId\":\"919112F8-1479-45F0-BE4D-91112143D2AF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.3.0\",\"versionEndExcluding\":\"6.3.17\",\"matchCriteriaId\":\"0B1B7CFD-96E5-40EA-9CBC-48D0255081BD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.4.0\",\"versionEndIncluding\":\"6.4.2\",\"matchCriteriaId\":\"F6B93ABE-8620-4253-83C0-3D2228D20118\"}]}]}],\"references\":[{\"url\":\"https://fortiguard.com/psirt/FG-IR-21-186\",\"source\":\"psirt@fortinet.com\",\"tags\":[\"Vendor Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.