GSD-2020-7965

Vulnerability from gsd - Updated: 2023-12-13 01:21
Details
flaskparser.py in Webargs 5.x through 5.5.2 doesn't check that the Content-Type header is application/json when receiving JSON input. If the request body is valid JSON, it will accept it even if the content type is application/x-www-form-urlencoded. This allows for JSON POST requests to be made across domains, leading to CSRF.
Aliases
Aliases

{
  "GSD": {
    "alias": "CVE-2020-7965",
    "description": "flaskparser.py in Webargs 5.x through 5.5.2 doesn\u0027t check that the Content-Type header is application/json when receiving JSON input. If the request body is valid JSON, it will accept it even if the content type is application/x-www-form-urlencoded. This allows for JSON POST requests to be made across domains, leading to CSRF.",
    "id": "GSD-2020-7965"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-7965"
      ],
      "details": "flaskparser.py in Webargs 5.x through 5.5.2 doesn\u0027t check that the Content-Type header is application/json when receiving JSON input. If the request body is valid JSON, it will accept it even if the content type is application/x-www-form-urlencoded. This allows for JSON POST requests to be made across domains, leading to CSRF.",
      "id": "GSD-2020-7965",
      "modified": "2023-12-13T01:21:52.010799Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2020-7965",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
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            "name": "https://webargs.readthedocs.io/en/latest/changelog.html",
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            "url": "https://webargs.readthedocs.io/en/latest/changelog.html"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003e=5.0.0,\u003c=5.5.2",
          "affected_versions": "All versions starting from 5.0.0 up to 5.5.2",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-352",
            "CWE-937"
          ],
          "date": "2020-02-03",
          "description": "`flaskparser.py` in Webargs does not check whether the `Content-Type` header is `application/json` when receiving JSON input. If the request body is valid JSON, it will accept it even if the content type is `application/x-www-form-urlencoded`. This allows for JSON POST requests to be made across domains, leading to CSRF.",
          "fixed_versions": [
            "5.5.3"
          ],
          "identifier": "CVE-2020-7965",
          "identifiers": [
            "CVE-2020-7965"
          ],
          "not_impacted": "All versions before 5.0.0, all versions after 5.5.2",
          "package_slug": "pypi/webargs",
          "pubdate": "2020-01-29",
          "solution": "Upgrade to version 5.5.3 or above.",
          "title": "Cross-Site Request Forgery (CSRF)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-7965",
            "https://webargs.readthedocs.io/en/latest/changelog.html"
          ],
          "uuid": "f1d736dd-9761-4196-9b5e-167e6ae926d4"
        }
      ]
    },
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            "cpe_match": [
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                "cpe23Uri": "cpe:2.3:a:webargs_project:webargs:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "5.5.2",
                "versionStartIncluding": "5.0.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
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        "description": {
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              "value": "flaskparser.py in Webargs 5.x through 5.5.2 doesn\u0027t check that the Content-Type header is application/json when receiving JSON input. If the request body is valid JSON, it will accept it even if the content type is application/x-www-form-urlencoded. This allows for JSON POST requests to be made across domains, leading to CSRF."
            }
          ]
        },
        "problemtype": {
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              "name": "https://webargs.readthedocs.io/en/latest/changelog.html",
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                "Release Notes",
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              ],
              "url": "https://webargs.readthedocs.io/en/latest/changelog.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.8,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2020-02-03T16:36Z",
      "publishedDate": "2020-01-29T15:15Z"
    }
  }
}



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