GSD-2021-23435

Vulnerability from gsd - Updated: 2021-09-13 00:00
Details
This affects the package clearance before 2.5.0. The vulnerability can be possible when users are able to set the value of session[:return_to]. If the value used for return_to contains multiple leading slashes (/////example.com) the user ends up being redirected to the external domain that comes after the slashes (http://example.com).
Aliases
Aliases
CVE-2021-23435
To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-23435",
    "description": "This affects the package clearance before 2.5.0. The vulnerability can be possible when users are able to set the value of session[:return_to]. If the value used for return_to contains multiple leading slashes (/////example.com) the user ends up being redirected to the external domain that comes after the slashes (http://example.com).",
    "id": "GSD-2021-23435"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "clearance",
            "purl": "pkg:gem/clearance"
          }
        }
      ],
      "aliases": [
        "CVE-2021-23435",
        "GHSA-4hpq-rjcx-7vj9"
      ],
      "details": "This affects the package clearance before 2.5.0. The vulnerability can\nbe possible when users are able to set the value of session[:return_to]. If the\nvalue used for return_to contains multiple leading slashes (/////example.com) the\nuser ends up being redirected to the external domain that comes after the slashes\n(http://example.com).\n",
      "id": "GSD-2021-23435",
      "modified": "2021-09-13T00:00:00.000Z",
      "published": "2021-09-13T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://github.com/advisories/GHSA-4hpq-rjcx-7vj9"
        }
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 7.6,
          "type": "CVSS_V3"
        }
      ],
      "summary": "Open Redirect in clearance"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "report@snyk.io",
        "DATE_PUBLIC": "2021-09-12T20:00:23.031648Z",
        "ID": "CVE-2021-23435",
        "STATE": "PUBLIC",
        "TITLE": "Open Redirect"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "clearance",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_value": "2.5.0"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
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      "credit": [
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          "lang": "eng",
          "value": "Snyk Security Team"
        }
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      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "This affects the package clearance before 2.5.0. The vulnerability can be possible when users are able to set the value of session[:return_to]. If the value used for return_to contains multiple leading slashes (/////example.com) the user ends up being redirected to the external domain that comes after the slashes (http://example.com)."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.6,
          "baseSeverity": "HIGH",
          "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:H",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Open Redirect"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://snyk.io/vuln/SNYK-RUBY-CLEARANCE-1577284",
            "refsource": "MISC",
            "url": "https://snyk.io/vuln/SNYK-RUBY-CLEARANCE-1577284"
          },
          {
            "name": "https://github.com/thoughtbot/clearance/pull/945",
            "refsource": "MISC",
            "url": "https://github.com/thoughtbot/clearance/pull/945"
          }
        ]
      }
    },
    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2021-23435",
      "cvss_v3": 7.6,
      "date": "2021-09-13",
      "description": "This affects the package clearance before 2.5.0. The vulnerability can\nbe possible when users are able to set the value of session[:return_to]. If the\nvalue used for return_to contains multiple leading slashes (/////example.com) the\nuser ends up being redirected to the external domain that comes after the slashes\n(http://example.com).\n",
      "gem": "clearance",
      "ghsa": "4hpq-rjcx-7vj9",
      "patched_versions": [
        "\u003e= 2.5.0"
      ],
      "title": "Open Redirect in clearance",
      "url": "https://github.com/advisories/GHSA-4hpq-rjcx-7vj9"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c2.5.0",
          "affected_versions": "All versions before 2.5.0",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
          "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-937"
          ],
          "date": "2021-09-23",
          "description": "This affects the package clearance The vulnerability can be possible when users are able to set the value of `session[:return_to]`.",
          "fixed_versions": [
            "2.5.0"
          ],
          "identifier": "CVE-2021-23435",
          "identifiers": [
            "CVE-2021-23435"
          ],
          "not_impacted": "All versions starting from 2.5.0",
          "package_slug": "gem/clearance",
          "pubdate": "2021-09-12",
          "solution": "Upgrade to version 2.5.0 or above.",
          "title": "URL Redirection to Untrusted Site (Open Redirect)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-23435"
          ],
          "uuid": "15a00489-9670-4142-bb4b-409657e3da73"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:thoughtbot:clearance:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.5.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "report@snyk.io",
          "ID": "CVE-2021-23435"
        },
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "This affects the package clearance before 2.5.0. The vulnerability can be possible when users are able to set the value of session[:return_to]. If the value used for return_to contains multiple leading slashes (/////example.com) the user ends up being redirected to the external domain that comes after the slashes (http://example.com)."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-601"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "N/A",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://snyk.io/vuln/SNYK-RUBY-CLEARANCE-1577284"
            },
            {
              "name": "N/A",
              "refsource": "CONFIRM",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/thoughtbot/clearance/pull/945"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.8,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "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": "2021-09-23T17:33Z",
      "publishedDate": "2021-09-12T20:15Z"
    }
  }
}


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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.
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  • 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.



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