Vulnerability-Lookup

PYSEC-2021-337

Vulnerability from pysec - Published: 2021-07-05 11:15 - Updated: 2021-09-26 23:32

Details

This affects all versions of package Flask-User. When using the make_safe_url function, it is possible to bypass URL validation and redirect a user to an arbitrary URL by providing multiple back slashes such as /////evil.com/path or \\evil.com/path. This vulnerability is only exploitable if an alternative WSGI server other than Werkzeug is used, or the default behaviour of Werkzeug is modified using 'autocorrect_location_header=False.

Impacted products

Name	purl
flask-user	pkg:pypi/flask-user

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "flask-user",
        "purl": "pkg:pypi/flask-user"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.3",
        "0.3.1",
        "0.3.2",
        "0.3.3",
        "0.3.4",
        "0.3.5",
        "0.3.6",
        "0.3.7",
        "0.3.8",
        "0.4.0",
        "0.4.1",
        "0.4.2",
        "0.4.3",
        "0.4.4",
        "0.4.5",
        "0.4.6",
        "0.4.7",
        "0.4.8",
        "0.4.9",
        "0.5.0",
        "0.5.1",
        "0.5.2",
        "0.5.3",
        "0.5.4",
        "0.5.5",
        "0.6",
        "0.6.1",
        "0.6.10",
        "0.6.12",
        "0.6.13",
        "0.6.14",
        "0.6.15",
        "0.6.16",
        "0.6.17",
        "0.6.19",
        "0.6.2",
        "0.6.20",
        "0.6.21",
        "0.6.3",
        "0.6.4",
        "0.6.5",
        "0.6.6",
        "0.6.7",
        "0.6.8",
        "0.6.9",
        "1.0.1.1",
        "1.0.1.2",
        "1.0.1.3",
        "1.0.1.4",
        "1.0.1.5",
        "1.0.2.0",
        "1.0.2.1",
        "1.0.2.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2021-23401",
    "SNYK-PYTHON-FLASKUSER-1293188",
    "GHSA-4298-89hc-6rfv"
  ],
  "details": "This affects all versions of package Flask-User. When using the make_safe_url function, it is possible to bypass URL validation and redirect a user to an arbitrary URL by providing multiple back slashes such as /////evil.com/path or \\\\\\evil.com/path. This vulnerability is only exploitable if an alternative WSGI server other than Werkzeug is used, or the default behaviour of Werkzeug is modified using \u0027autocorrect_location_header=False.",
  "id": "PYSEC-2021-337",
  "modified": "2021-09-26T23:32:30.327481Z",
  "published": "2021-07-05T11:15:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lingthio/Flask-User"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.py"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-4298-89hc-6rfv"
    }
  ]
}

CVE-2021-23401 (GCVE-0-2021-23401)

Vulnerability from cvelistv5 – Published: 2021-07-05 10:25 – Updated: 2024-09-16 17:15

Title

Open Redirect

Summary

This affects all versions of package Flask-User. When using the make_safe_url function, it is possible to bypass URL validation and redirect a user to an arbitrary URL by providing multiple back slashes such as /////evil.com/path or \\\evil.com/path. This vulnerability is only exploitable if an alternative WSGI server other than Werkzeug is used, or the default behaviour of Werkzeug is modified using 'autocorrect_location_header=False.

Severity

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:U/RC:C

CWE

Open Redirect

Assigner

snyk mitre root

References

3 references

URL	Tags
https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188	x_refsource_MISC
https://github.com/lingthio/Flask-User	x_refsource_MISC
https://github.com/lingthio/Flask-User/blob/maste…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	Flask-User	Affected: 0 , < unspecified (custom)

Date Public

2021-07-05 00:00

Credits

Noam Moshe of Claroty

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T19:05:55.891Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/lingthio/Flask-User"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.py"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Flask-User",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Noam Moshe of Claroty"
        }
      ],
      "datePublic": "2021-07-05T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "This affects all versions of package Flask-User. When using the make_safe_url function, it is possible to bypass URL validation and redirect a user to an arbitrary URL by providing multiple back slashes such as /////evil.com/path or \\\\\\evil.com/path. This vulnerability is only exploitable if an alternative WSGI server other than Werkzeug is used, or the default behaviour of Werkzeug is modified using \u0027autocorrect_location_header=False."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "exploitCodeMaturity": "PROOF_OF_CONCEPT",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "remediationLevel": "UNAVAILABLE",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 5.1,
            "temporalSeverity": "MEDIUM",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:U/RC:C",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Open Redirect",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-07-05T10:25:11.000Z",
        "orgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
        "shortName": "snyk"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/lingthio/Flask-User"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.py"
        }
      ],
      "title": "Open Redirect",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "report@snyk.io",
          "DATE_PUBLIC": "2021-07-05T10:20:49.366771Z",
          "ID": "CVE-2021-23401",
          "STATE": "PUBLIC",
          "TITLE": "Open Redirect"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Flask-User",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003e=",
                            "version_value": "0"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Noam Moshe of Claroty"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "This affects all versions of package Flask-User. When using the make_safe_url function, it is possible to bypass URL validation and redirect a user to an arbitrary URL by providing multiple back slashes such as /////evil.com/path or \\\\\\evil.com/path. This vulnerability is only exploitable if an alternative WSGI server other than Werkzeug is used, or the default behaviour of Werkzeug is modified using \u0027autocorrect_location_header=False."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:U/RC:C",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Open Redirect"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188",
              "refsource": "MISC",
              "url": "https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188"
            },
            {
              "name": "https://github.com/lingthio/Flask-User",
              "refsource": "MISC",
              "url": "https://github.com/lingthio/Flask-User"
            },
            {
              "name": "https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.py",
              "refsource": "MISC",
              "url": "https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.py"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
    "assignerShortName": "snyk",
    "cveId": "CVE-2021-23401",
    "datePublished": "2021-07-05T10:25:11.545Z",
    "dateReserved": "2021-01-08T00:00:00.000Z",
    "dateUpdated": "2024-09-16T17:15:15.113Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-4298-89HC-6RFV

Vulnerability from github – Published: 2021-08-09 20:44 – Updated: 2024-09-20 17:59

Summary

Open Redirect in Flask-User

Details

This affects all versions of package Flask-User. When using the make_safe_url function, it is possible to bypass URL validation and redirect a user to an arbitrary URL by providing multiple backslashes such as /////evil.com/path or \\\evil.com/path. This vulnerability is only exploitable if an alternative WSGI server other than Werkzeug is used, or the default behaviour of Werkzeug is modified using autocorrect_location_header=False.

Severity

5.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

5.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Flask-User"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1.0.2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-23401"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-07-06T15:45:36Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "This affects all versions of package Flask-User. When using the `make_safe_url` function, it is possible to bypass URL validation and redirect a user to an arbitrary URL by providing multiple backslashes such as `/////evil.com/path` or `\\\\\\evil.com/path`. This vulnerability is only exploitable if an alternative WSGI server other than Werkzeug is used, or the default behaviour of Werkzeug is modified using `autocorrect_location_header=False`.",
  "id": "GHSA-4298-89hc-6rfv",
  "modified": "2024-09-20T17:59:20Z",
  "published": "2021-08-09T20:44:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-23401"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-4298-89hc-6rfv"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/lingthio/Flask-User"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.py"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/flask-user/PYSEC-2021-337.yaml"
    },
    {
      "type": "WEB",
      "url": "https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Open Redirect in Flask-User"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

PYSEC-2021-337

CVE-2021-23401 (GCVE-0-2021-23401)

GHSA-4298-89HC-6RFV

Tags

Sightings

Nomenclature

Related by attack behaviour