Vulnerability-Lookup

GSD-2021-23385

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

This affects all versions of package Flask-Security. When using the get_post_logout_redirect and get_post_login_redirect functions, 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. 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. **Note:** Flask-Security is not maintained anymore.

Aliases

CVE-2021-23385

Aliases

CVE-2021-23385

JSON

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{
  "GSD": {
    "alias": "CVE-2021-23385",
    "description": "This affects all versions of package Flask-Security. When using the get_post_logout_redirect and get_post_login_redirect functions, 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. 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. **Note:** Flask-Security is not maintained anymore.",
    "id": "GSD-2021-23385",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-23385.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-23385"
      ],
      "details": "This affects all versions of package Flask-Security. When using the get_post_logout_redirect and get_post_login_redirect functions, 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. 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. **Note:** Flask-Security is not maintained anymore.",
      "id": "GSD-2021-23385",
      "modified": "2023-12-13T01:23:29.936661Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "report@snyk.io",
        "DATE_PUBLIC": "2022-08-02T13:22:34.794204Z",
        "ID": "CVE-2021-23385",
        "STATE": "PUBLIC",
        "TITLE": "Open Redirect"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Flask-Security",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003e=",
                          "version_value": "0"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
      },
      "credit": [
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          "value": "Noam Moshe of Claroty"
        }
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            "value": "This affects all versions of package Flask-Security. When using the get_post_logout_redirect and get_post_login_redirect functions, 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. 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. **Note:** Flask-Security is not maintained anymore."
          }
        ]
      },
      "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://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234",
            "refsource": "MISC",
            "url": "https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234"
          },
          {
            "name": "https://github.com/mattupstate/flask-security",
            "refsource": "MISC",
            "url": "https://github.com/mattupstate/flask-security"
          },
          {
            "name": "https://snyk.io/blog/url-confusion-vulnerabilities/",
            "refsource": "MISC",
            "url": "https://snyk.io/blog/url-confusion-vulnerabilities/"
          },
          {
            "name": "[debian-lts-announce] 20230828 [SECURITY] [DLA 3545-1] flask-security security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00034.html"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c=3.0.0",
          "affected_versions": "All versions up to 3.0.0",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-601",
            "CWE-937"
          ],
          "date": "2022-10-07",
          "description": "This affects all versions of package Flask-Security. When using the get_post_logout_redirect and get_post_login_redirect functions, 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. 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. **Note:** Flask-Security is not maintained anymore.",
          "fixed_versions": [],
          "identifier": "CVE-2021-23385",
          "identifiers": [
            "GHSA-cg8c-gc2j-2wf7",
            "CVE-2021-23385"
          ],
          "not_impacted": "",
          "package_slug": "pypi/Flask-Security",
          "pubdate": "2022-10-07",
          "solution": "Unfortunately, there is no solution available yet.",
          "title": "URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-23385",
            "https://github.com/mattupstate/flask-security",
            "https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234",
            "https://snyk.io/blog/url-confusion-vulnerabilities/",
            "https://github.com/advisories/GHSA-cg8c-gc2j-2wf7"
          ],
          "uuid": "0eefb327-1686-4fd6-9d19-32a3468b0ac0"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:flask-security_project:flask-security:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
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          "ID": "CVE-2021-23385"
        },
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "This affects all versions of package Flask-Security. When using the get_post_logout_redirect and get_post_login_redirect functions, 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. 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. **Note:** Flask-Security is not maintained anymore."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-601"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234"
            },
            {
              "name": "https://github.com/mattupstate/flask-security",
              "refsource": "MISC",
              "tags": [
                "Product",
                "Third Party Advisory"
              ],
              "url": "https://github.com/mattupstate/flask-security"
            },
            {
              "name": "https://snyk.io/blog/url-confusion-vulnerabilities/",
              "refsource": "MISC",
              "tags": [
                "Technical Description",
                "Third Party Advisory"
              ],
              "url": "https://snyk.io/blog/url-confusion-vulnerabilities/"
            },
            {
              "name": "[debian-lts-announce] 20230828 [SECURITY] [DLA 3545-1] flask-security security update",
              "refsource": "MLIST",
              "tags": [],
              "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00034.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.7
        }
      },
      "lastModifiedDate": "2023-08-28T19:15Z",
      "publishedDate": "2022-08-02T14:15Z"
    }
  }
}

CVE-2021-23385 (GCVE-0-2021-23385)

Vulnerability from cvelistv5 – Published: 2022-08-02 13:25 – Updated: 2024-09-16 22:08

Title

Open Redirect

Summary

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

4 references

URL	Tags
https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSE…
https://github.com/mattupstate/flask-security
https://snyk.io/blog/url-confusion-vulnerabilities/
https://lists.debian.org/debian-lts-announce/2023…	mailing-list

Impacted products

1 product

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

Date Public

2022-08-02 00:00

Credits

Noam Moshe of Claroty

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T19:05:55.663Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/mattupstate/flask-security"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://snyk.io/blog/url-confusion-vulnerabilities/"
          },
          {
            "name": "[debian-lts-announce] 20230828 [SECURITY] [DLA 3545-1] flask-security security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00034.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Flask-Security",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Noam Moshe of Claroty"
        }
      ],
      "datePublic": "2022-08-02T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "This affects all versions of package Flask-Security. When using the get_post_logout_redirect and get_post_login_redirect functions, 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. 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. **Note:** Flask-Security is not maintained anymore."
        }
      ],
      "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": "2023-08-28T18:06:09.073Z",
        "orgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
        "shortName": "snyk"
      },
      "references": [
        {
          "url": "https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234"
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          "url": "https://github.com/mattupstate/flask-security"
        },
        {
          "url": "https://snyk.io/blog/url-confusion-vulnerabilities/"
        },
        {
          "name": "[debian-lts-announce] 20230828 [SECURITY] [DLA 3545-1] flask-security security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00034.html"
        }
      ],
      "title": "Open Redirect"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
    "assignerShortName": "snyk",
    "cveId": "CVE-2021-23385",
    "datePublished": "2022-08-02T13:25:14.717Z",
    "dateReserved": "2021-01-08T00:00:00.000Z",
    "dateUpdated": "2024-09-16T22:08:36.808Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Detection rules are retrieved from Rulezet.

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.

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GSD-2021-23385

CVE-2021-23385 (GCVE-0-2021-23385)

Tags

Sightings

Nomenclature

Related by attack behaviour