GSD-2021-43281

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
MyBB before 1.8.29 allows Remote Code Injection by an admin with the "Can manage settings?" permission. The Admin CP's Settings management module does not validate setting types correctly on insertion and update, making it possible to add settings of supported type "php" with PHP code, executed on Change Settings pages.
Aliases
Aliases
CVE-2021-43281
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{
  "GSD": {
    "alias": "CVE-2021-43281",
    "description": "MyBB before 1.8.29 allows Remote Code Injection by an admin with the \"Can manage settings?\" permission. The Admin CP\u0027s Settings management module does not validate setting types correctly on insertion and update, making it possible to add settings of supported type \"php\" with PHP code, executed on Change Settings pages.",
    "id": "GSD-2021-43281"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-43281"
      ],
      "details": "MyBB before 1.8.29 allows Remote Code Injection by an admin with the \"Can manage settings?\" permission. The Admin CP\u0027s Settings management module does not validate setting types correctly on insertion and update, making it possible to add settings of supported type \"php\" with PHP code, executed on Change Settings pages.",
      "id": "GSD-2021-43281",
      "modified": "2023-12-13T01:23:26.405659Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-43281",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
                        }
                      ]
                    }
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              },
              "vendor_name": "n/a"
            }
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      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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            "value": "MyBB before 1.8.29 allows Remote Code Injection by an admin with the \"Can manage settings?\" permission. The Admin CP\u0027s Settings management module does not validate setting types correctly on insertion and update, making it possible to add settings of supported type \"php\" with PHP code, executed on Change Settings pages."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
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            "description": [
              {
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                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/mybb/mybb/security/advisories/GHSA-8gxx-vmr9-h39p",
            "refsource": "CONFIRM",
            "url": "https://github.com/mybb/mybb/security/advisories/GHSA-8gxx-vmr9-h39p"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
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            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.8.29",
                "versionStartIncluding": "1.2.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
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          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-43281"
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        "description": {
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              "value": "MyBB before 1.8.29 allows Remote Code Injection by an admin with the \"Can manage settings?\" permission. The Admin CP\u0027s Settings management module does not validate setting types correctly on insertion and update, making it possible to add settings of supported type \"php\" with PHP code, executed on Change Settings pages."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-94"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/mybb/mybb/security/advisories/GHSA-8gxx-vmr9-h39p",
              "refsource": "CONFIRM",
              "tags": [
                "Patch",
                "Release Notes",
                "Third Party Advisory"
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              "url": "https://github.com/mybb/mybb/security/advisories/GHSA-8gxx-vmr9-h39p"
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          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.2,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-11-05T19:10Z",
      "publishedDate": "2021-11-04T18:15Z"
    }
  }
}


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  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.



Detection rules are retrieved from Rulezet.