CVE-2021-32697 (GCVE-0-2021-32697)

Vulnerability from cvelistv5 – Published: 2021-06-21 18:15 – Updated: 2024-08-03 23:25
VLAI
Title
Form validation can be skipped
Summary
neos/forms is an open source framework to build web forms. By crafting a special `GET` request containing a valid form state, a form can be submitted without invoking any validators. Form state is secured with an HMAC that is still verified. That means that this issue can only be exploited if Form Finishers cause side effects even if no form values have been sent. Form Finishers can be adjusted in a way that they only execute an action if the submitted form contains some expected data. Alternatively a custom Finisher can be added as first finisher. This regression was introduced with https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-20 - Improper Input Validation
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
neos form Affected: >= 1.2.0, < 4.3.3
Affected: >= 5.0.0, < 5.0.9
Affected: >= 5.1.0, < 5.1.3
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T23:25:31.146Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/neos/form/security/advisories/GHSA-m5vx-8chx-qvmm"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/neos/form-ghsa-m5vx-8chx-qvmm/pull/1"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/neos/form/commit/69de4219b1f58157e2be6b05811463875d75c246"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/neos/form/releases/tag/5.1.3"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "form",
          "vendor": "neos",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.2.0, \u003c 4.3.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.0.0, \u003c 5.0.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.1.0, \u003c 5.1.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "neos/forms is an open source framework to build web forms. By crafting a special `GET` request containing a valid form state, a form can be submitted without invoking any validators. Form state is secured with an HMAC that is still verified. That means that this issue can only be exploited if Form Finishers cause side effects even if no form values have been sent. Form Finishers can be adjusted in a way that they only execute an action if the submitted form contains some expected data. Alternatively a custom Finisher can be added as first finisher. This regression was introduced with https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-06-21T18:15:13.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/neos/form/security/advisories/GHSA-m5vx-8chx-qvmm"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/neos/form-ghsa-m5vx-8chx-qvmm/pull/1"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/neos/form/commit/69de4219b1f58157e2be6b05811463875d75c246"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/neos/form/releases/tag/5.1.3"
        }
      ],
      "source": {
        "advisory": "GHSA-m5vx-8chx-qvmm",
        "discovery": "UNKNOWN"
      },
      "title": "Form validation can be skipped",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-32697",
          "STATE": "PUBLIC",
          "TITLE": "Form validation can be skipped"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "form",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003e= 1.2.0, \u003c 4.3.3"
                          },
                          {
                            "version_value": "\u003e= 5.0.0, \u003c 5.0.9"
                          },
                          {
                            "version_value": "\u003e= 5.1.0, \u003c 5.1.3"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "neos"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "neos/forms is an open source framework to build web forms. By crafting a special `GET` request containing a valid form state, a form can be submitted without invoking any validators. Form state is secured with an HMAC that is still verified. That means that this issue can only be exploited if Form Finishers cause side effects even if no form values have been sent. Form Finishers can be adjusted in a way that they only execute an action if the submitted form contains some expected data. Alternatively a custom Finisher can be added as first finisher. This regression was introduced with https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567"
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-20: Improper Input Validation"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/neos/form/security/advisories/GHSA-m5vx-8chx-qvmm",
              "refsource": "CONFIRM",
              "url": "https://github.com/neos/form/security/advisories/GHSA-m5vx-8chx-qvmm"
            },
            {
              "name": "https://github.com/neos/form-ghsa-m5vx-8chx-qvmm/pull/1",
              "refsource": "MISC",
              "url": "https://github.com/neos/form-ghsa-m5vx-8chx-qvmm/pull/1"
            },
            {
              "name": "https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567",
              "refsource": "MISC",
              "url": "https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567"
            },
            {
              "name": "https://github.com/neos/form/commit/69de4219b1f58157e2be6b05811463875d75c246",
              "refsource": "MISC",
              "url": "https://github.com/neos/form/commit/69de4219b1f58157e2be6b05811463875d75c246"
            },
            {
              "name": "https://github.com/neos/form/releases/tag/5.1.3",
              "refsource": "MISC",
              "url": "https://github.com/neos/form/releases/tag/5.1.3"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-m5vx-8chx-qvmm",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-32697",
    "datePublished": "2021-06-21T18:15:13.000Z",
    "dateReserved": "2021-05-12T00:00:00.000Z",
    "dateUpdated": "2024-08-03T23:25:31.146Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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

Author Source Type Date Other

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.
  • 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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.