Vulnerability-Lookup

GSD-2021-43805

Vulnerability from gsd - Updated: 2021-12-07 00:00

Details

### Impact Denial of service vulnerability that could be exploited during a guest checkout. The regular expression used to validate a guest order's email was subject to exponential backtracking through a fragment like `a.a.`. Before the patch, it can be reproduced in the console like this: ```ruby irb(main)> Spree::EmailValidator::EMAIL_REGEXP.match "a@a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.@" processing time: 54.293660s => nil ``` To reproduce in the browser, fill in the "Customer Email" field with that fake email address during a guest checkout. Before that, you should open the browser dev tools and change the `type` attribute for that field from `email` to `text`. After entering a fake address and pressing the "Save & Continue" button, the browser will take a long term to perform the request before showing an error message for the invalid address. Eventually, making the email string even longer could lead to the exhaustion of server resources. ### Patches Versions 3.1.4, 3.0.4, and 2.11.13 have been patched to use a different regular expression. There's an improbable chance that some orders in your system end up having associated an email address that is no longer valid. We've added a task to check precisely that: ```bash bin/rails solidus:check_orders_with_invalid_email ``` The above will print information for every affected order if any. ### Workarounds If a prompt upgrade is not an option, please, add the following to `config/application.rb`: ```ruby config.after_initialize do Spree::EmailValidator.send(:remove_const, :EMAIL_REGEXP) Spree::EmailValidator::EMAIL_REGEXP = URI::MailTo::EMAIL_REGEXP end ```

Aliases

CVE-2021-43805

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-43805",
    "description": "Solidus is a free, open-source ecommerce platform built on Rails. Versions of Solidus prior to 3.1.4, 3.0.4, and 2.11.13 have a denial of service vulnerability that could be exploited during a guest checkout. The regular expression used to validate a guest order\u0027s email was subject to exponential backtracking through a fragment like `a.a.` Versions 3.1.4, 3.0.4, and 2.11.13 have been patched to use a different regular expression. The maintainers added a check for email addresses that are no longer valid that will print information about any affected orders that exist. If a prompt upgrade is not an option, a workaround is available. It is possible to edit the file `config/application.rb` manually (with code provided by the maintainers in the GitHub Security Advisory) to check email validity.",
    "id": "GSD-2021-43805"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "solidus_core",
            "purl": "pkg:gem/solidus_core"
          }
        }
      ],
      "aliases": [
        "CVE-2021-43805",
        "GHSA-qxmr-qxh6-2cc9"
      ],
      "details": "### Impact\nDenial of service vulnerability that could be exploited during a guest checkout.\nThe regular expression used to validate a guest order\u0027s email was subject to\nexponential backtracking through a fragment like `a.a.`.\n\nBefore the patch, it can be reproduced in the console like this:\n\n```ruby\nirb(main)\u003e Spree::EmailValidator::EMAIL_REGEXP.match \"a@a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.@\"\nprocessing time: 54.293660s\n=\u003e nil\n```\n\nTo reproduce in the browser, fill in the \"Customer Email\" field with that fake\nemail address during a guest checkout. Before that, you should open the browser\ndev tools and change the `type` attribute for that field from `email` to `text`.\nAfter entering a fake address and pressing the \"Save \u0026 Continue\" button, the\nbrowser will take a long term to perform the request before showing an error\nmessage for the invalid address. Eventually, making the email string even longer\ncould lead to the exhaustion of server resources.\n\n### Patches\nVersions 3.1.4, 3.0.4, and 2.11.13 have been patched to use a different regular\nexpression.\n\nThere\u0027s an improbable chance that some orders in your system end up having\nassociated an email address that is no longer valid. We\u0027ve added a task to check\nprecisely that:\n\n```bash\nbin/rails solidus:check_orders_with_invalid_email\n```\n\nThe above will print information for every affected order if any.\n\n### Workarounds\n\nIf a prompt upgrade is not an option, please, add the following to\n`config/application.rb`:\n\n```ruby\nconfig.after_initialize do\n  Spree::EmailValidator.send(:remove_const, :EMAIL_REGEXP)\n  Spree::EmailValidator::EMAIL_REGEXP = URI::MailTo::EMAIL_REGEXP\nend\n```\n",
      "id": "GSD-2021-43805",
      "modified": "2021-12-07T00:00:00.000Z",
      "published": "2021-12-07T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9"
        },
        {
          "type": "WEB",
          "url": "https://github.com/solidusio/solidus/commit/6be174c955fad84017ca67589c676526bc5ade71"
        },
        {
          "type": "WEB",
          "url": "https://en.wikipedia.org/wiki/ReDoS"
        },
        {
          "type": "WEB",
          "url": "https://snyk.io/blog/redos-and-catastrophic-backtracking/"
        }
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 7.5,
          "type": "CVSS_V3"
        }
      ],
      "summary": "ReDos vulnerability on guest checkout email validation"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-43805",
        "STATE": "PUBLIC",
        "TITLE": "ReDos vulnerability on guest checkout email validation"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "solidus",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003e= 3.1.0, \u003c 3.1.4"
                        },
                        {
                          "version_value": "\u003e= 3.0.0, \u003c 3.0.4"
                        },
                        {
                          "version_value": "\u003c 2.11.13"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "solidusio"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Solidus is a free, open-source ecommerce platform built on Rails. Versions of Solidus prior to 3.1.4, 3.0.4, and 2.11.13 have a denial of service vulnerability that could be exploited during a guest checkout. The regular expression used to validate a guest order\u0027s email was subject to exponential backtracking through a fragment like `a.a.` Versions 3.1.4, 3.0.4, and 2.11.13 have been patched to use a different regular expression. The maintainers added a check for email addresses that are no longer valid that will print information about any affected orders that exist. If a prompt upgrade is not an option, a workaround is available. It is possible to edit the file `config/application.rb` manually (with code provided by the maintainers in the GitHub Security Advisory) to check email validity."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-1333: Inefficient Regular Expression Complexity"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9",
            "refsource": "CONFIRM",
            "url": "https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9"
          },
          {
            "name": "https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401",
            "refsource": "MISC",
            "url": "https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-qxmr-qxh6-2cc9",
        "discovery": "UNKNOWN"
      }
    },
    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2021-43805",
      "cvss_v3": 7.5,
      "date": "2021-12-07",
      "description": "### Impact\nDenial of service vulnerability that could be exploited during a guest checkout.\nThe regular expression used to validate a guest order\u0027s email was subject to\nexponential backtracking through a fragment like `a.a.`.\n\nBefore the patch, it can be reproduced in the console like this:\n\n```ruby\nirb(main)\u003e Spree::EmailValidator::EMAIL_REGEXP.match \"a@a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.@\"\nprocessing time: 54.293660s\n=\u003e nil\n```\n\nTo reproduce in the browser, fill in the \"Customer Email\" field with that fake\nemail address during a guest checkout. Before that, you should open the browser\ndev tools and change the `type` attribute for that field from `email` to `text`.\nAfter entering a fake address and pressing the \"Save \u0026 Continue\" button, the\nbrowser will take a long term to perform the request before showing an error\nmessage for the invalid address. Eventually, making the email string even longer\ncould lead to the exhaustion of server resources.\n\n### Patches\nVersions 3.1.4, 3.0.4, and 2.11.13 have been patched to use a different regular\nexpression.\n\nThere\u0027s an improbable chance that some orders in your system end up having\nassociated an email address that is no longer valid. We\u0027ve added a task to check\nprecisely that:\n\n```bash\nbin/rails solidus:check_orders_with_invalid_email\n```\n\nThe above will print information for every affected order if any.\n\n### Workarounds\n\nIf a prompt upgrade is not an option, please, add the following to\n`config/application.rb`:\n\n```ruby\nconfig.after_initialize do\n  Spree::EmailValidator.send(:remove_const, :EMAIL_REGEXP)\n  Spree::EmailValidator::EMAIL_REGEXP = URI::MailTo::EMAIL_REGEXP\nend\n```\n",
      "gem": "solidus_core",
      "ghsa": "qxmr-qxh6-2cc9",
      "patched_versions": [
        "~\u003e 2.11.13",
        "~\u003e 3.0.4",
        "\u003e= 3.1.4"
      ],
      "related": {
        "url": [
          "https://github.com/solidusio/solidus/commit/6be174c955fad84017ca67589c676526bc5ade71",
          "https://en.wikipedia.org/wiki/ReDoS",
          "https://snyk.io/blog/redos-and-catastrophic-backtracking/"
        ]
      },
      "title": "ReDos vulnerability on guest checkout email validation",
      "url": "https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c2.11.13||\u003e=3.0.0 \u003c3.0.4||\u003e=3.1.0 \u003c3.1.4",
          "affected_versions": "All versions before 2.11.13, all versions starting from 3.0.0 before 3.0.4, all versions starting from 3.1.0 before 3.1.4",
          "cvss_v2": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-1333",
            "CWE-937"
          ],
          "date": "2021-12-08",
          "description": "Solidus is a free, open-source ecommerce platform built on Rails.If a prompt upgrade is not an option, a workaround is available. It is possible to edit the file `config/application.rb` manually (with code provided by the maintainers in the GitHub Security Advisory) to check email validity.",
          "fixed_versions": [
            "2.11.13",
            "3.0.4",
            "3.1.4"
          ],
          "identifier": "CVE-2021-43805",
          "identifiers": [
            "CVE-2021-43805",
            "GHSA-qxmr-qxh6-2cc9"
          ],
          "not_impacted": "All versions starting from 2.11.13 before 3.0.0, all versions starting from 3.0.4 before 3.1.0, all versions starting from 3.1.4",
          "package_slug": "gem/solidus_core",
          "pubdate": "2021-12-07",
          "solution": "Upgrade to versions 2.11.13, 3.0.4, 3.1.4 or above.",
          "title": "Inefficient Regular Expression Complexity",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-43805",
            "https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9",
            "https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401"
          ],
          "uuid": "badfc2bd-42b3-419c-8fe9-31aeecf0fc8b"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:nebulab:solidus:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.11.13",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:nebulab:solidus:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.0.4",
                "versionStartIncluding": "3.0.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:nebulab:solidus:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.1.4",
                "versionStartIncluding": "3.1.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-43805"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Solidus is a free, open-source ecommerce platform built on Rails. Versions of Solidus prior to 3.1.4, 3.0.4, and 2.11.13 have a denial of service vulnerability that could be exploited during a guest checkout. The regular expression used to validate a guest order\u0027s email was subject to exponential backtracking through a fragment like `a.a.` Versions 3.1.4, 3.0.4, and 2.11.13 have been patched to use a different regular expression. The maintainers added a check for email addresses that are no longer valid that will print information about any affected orders that exist. If a prompt upgrade is not an option, a workaround is available. It is possible to edit the file `config/application.rb` manually (with code provided by the maintainers in the GitHub Security Advisory) to check email validity."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-1333"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9",
              "refsource": "CONFIRM",
              "tags": [
                "Exploit",
                "Mitigation",
                "Third Party Advisory"
              ],
              "url": "https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9"
            },
            {
              "name": "https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-12-08T17:30Z",
      "publishedDate": "2021-12-07T18:15Z"
    }
  }
}

CVE-2021-43805 (GCVE-0-2021-43805)

Vulnerability from cvelistv5 – Published: 2021-12-07 17:25 – Updated: 2024-08-04 04:03

Title

ReDos vulnerability on guest checkout email validation

Summary

Solidus is a free, open-source ecommerce platform built on Rails. Versions of Solidus prior to 3.1.4, 3.0.4, and 2.11.13 have a denial of service vulnerability that could be exploited during a guest checkout. The regular expression used to validate a guest order's email was subject to exponential backtracking through a fragment like `a.a.` Versions 3.1.4, 3.0.4, and 2.11.13 have been patched to use a different regular expression. The maintainers added a check for email addresses that are no longer valid that will print information about any affected orders that exist. If a prompt upgrade is not an option, a workaround is available. It is possible to edit the file `config/application.rb` manually (with code provided by the maintainers in the GitHub Security Advisory) to check email validity.

Severity

7.5 (High)


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

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/solidusio/solidus/security/adv…	x_refsource_CONFIRM
https://github.com/solidusio/solidus/commit/98671…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
solidusio	solidus	Affected: >= 3.1.0, < 3.1.4 Affected: >= 3.0.0, < 3.0.4 Affected: < 2.11.13

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T04:03:08.816Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "solidus",
          "vendor": "solidusio",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.1.0, \u003c 3.1.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.0.0, \u003c 3.0.4"
            },
            {
              "status": "affected",
              "version": "\u003c 2.11.13"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Solidus is a free, open-source ecommerce platform built on Rails. Versions of Solidus prior to 3.1.4, 3.0.4, and 2.11.13 have a denial of service vulnerability that could be exploited during a guest checkout. The regular expression used to validate a guest order\u0027s email was subject to exponential backtracking through a fragment like `a.a.` Versions 3.1.4, 3.0.4, and 2.11.13 have been patched to use a different regular expression. The maintainers added a check for email addresses that are no longer valid that will print information about any affected orders that exist. If a prompt upgrade is not an option, a workaround is available. It is possible to edit the file `config/application.rb` manually (with code provided by the maintainers in the GitHub Security Advisory) to check email validity."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1333",
              "description": "CWE-1333: Inefficient Regular Expression Complexity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-07T17:25:09.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401"
        }
      ],
      "source": {
        "advisory": "GHSA-qxmr-qxh6-2cc9",
        "discovery": "UNKNOWN"
      },
      "title": "ReDos vulnerability on guest checkout email validation",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-43805",
          "STATE": "PUBLIC",
          "TITLE": "ReDos vulnerability on guest checkout email validation"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "solidus",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003e= 3.1.0, \u003c 3.1.4"
                          },
                          {
                            "version_value": "\u003e= 3.0.0, \u003c 3.0.4"
                          },
                          {
                            "version_value": "\u003c 2.11.13"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "solidusio"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Solidus is a free, open-source ecommerce platform built on Rails. Versions of Solidus prior to 3.1.4, 3.0.4, and 2.11.13 have a denial of service vulnerability that could be exploited during a guest checkout. The regular expression used to validate a guest order\u0027s email was subject to exponential backtracking through a fragment like `a.a.` Versions 3.1.4, 3.0.4, and 2.11.13 have been patched to use a different regular expression. The maintainers added a check for email addresses that are no longer valid that will print information about any affected orders that exist. If a prompt upgrade is not an option, a workaround is available. It is possible to edit the file `config/application.rb` manually (with code provided by the maintainers in the GitHub Security Advisory) to check email validity."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-1333: Inefficient Regular Expression Complexity"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9",
              "refsource": "CONFIRM",
              "url": "https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9"
            },
            {
              "name": "https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401",
              "refsource": "MISC",
              "url": "https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-qxmr-qxh6-2cc9",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-43805",
    "datePublished": "2021-12-07T17:25:09.000Z",
    "dateReserved": "2021-11-16T00:00:00.000Z",
    "dateUpdated": "2024-08-04T04:03:08.816Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-QXMR-QXH6-2CC9

Vulnerability from github – Published: 2021-12-07 22:01 – Updated: 2021-12-08 19:29

Summary

ReDos vulnerability on guest checkout email validation

Details

Impact

Denial of service vulnerability that could be exploited during a guest checkout. The regular expression used to validate a guest order's email was subject to exponential backtracking through a fragment like a.a..

Before the patch, it can be reproduced in the console like this:

irb(main)> Spree::EmailValidator::EMAIL_REGEXP.match "a@a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.@"
processing time: 54.293660s
=> nil

To reproduce in the browser, fill in the "Customer Email" field with that fake email address during a guest checkout. Before that, you should open the browser dev tools and change the type attribute for that field from email to text. After entering a fake address and pressing the "Save & Continue" button, the browser will take a long term to perform the request before showing an error message for the invalid address. Eventually, making the email string even longer could lead to the exhaustion of server resources.

Patches

Versions 3.1.4, 3.0.4, and 2.11.13 have been patched to use a different regular expression.

There's an improbable chance that some orders in your system end up having associated an email address that is no longer valid. We've added a task to check precisely that:

bin/rails solidus:check_orders_with_invalid_email

The above will print information for every affected order if any.

Workarounds

If a prompt upgrade is not an option, please, add the following to config/application.rb:

config.after_initialize do
  Spree::EmailValidator.send(:remove_const, :EMAIL_REGEXP)
  Spree::EmailValidator::EMAIL_REGEXP = URI::MailTo::EMAIL_REGEXP
end

References

https://en.wikipedia.org/wiki/ReDoS
https://snyk.io/blog/redos-and-catastrophic-backtracking/

For more information

If you have any questions or comments about this advisory: * Open an issue or a discussion in Solidus. * Email us at security@solidus.io * Contact the core team on Slack

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "solidus_core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.11.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "solidus_core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "solidus_core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.1.0"
            },
            {
              "fixed": "3.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-43805"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-12-07T20:58:37Z",
    "nvd_published_at": "2021-12-07T18:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nDenial of service vulnerability that could be exploited during a guest checkout. The regular expression used to validate a guest order\u0027s email was subject to exponential backtracking through a fragment like `a.a.`.\n\nBefore the patch, it can be reproduced in the console like this:\n\n```ruby\nirb(main)\u003e Spree::EmailValidator::EMAIL_REGEXP.match \"a@a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.@\"\nprocessing time: 54.293660s\n=\u003e nil\n```\n\nTo reproduce in the browser, fill in the \"Customer Email\" field with that fake email address during a guest checkout. Before that, you should open the browser dev tools and change the `type` attribute for that field from `email` to `text`. After entering a fake address and pressing the \"Save \u0026 Continue\" button, the browser will take a long term to perform the request before showing an error message for the invalid address. Eventually, making the email string even longer could lead to the exhaustion of server resources.\n\n\n### Patches\nVersions 3.1.4, 3.0.4, and 2.11.13 have been patched to use a different regular expression.\n\nThere\u0027s an improbable chance that some orders in your system end up having associated an email address that is no longer valid. We\u0027ve added a task to check precisely that:\n\n```bash\nbin/rails solidus:check_orders_with_invalid_email\n```\n\nThe above will print information for every affected order if any.\n\n### Workarounds\n\nIf a prompt upgrade is not an option, please, add the following to `config/application.rb`:\n\n```ruby\nconfig.after_initialize do\n  Spree::EmailValidator.send(:remove_const, :EMAIL_REGEXP)\n  Spree::EmailValidator::EMAIL_REGEXP = URI::MailTo::EMAIL_REGEXP\nend\n```\n\n### References\n\n- https://en.wikipedia.org/wiki/ReDoS\n- https://snyk.io/blog/redos-and-catastrophic-backtracking/\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an [issue](https://github.com/solidusio/solidus/issues) or a [discussion](https://github.com/solidusio/solidus/discussions) in Solidus.\n* Email us at [security@solidus.io](mailto:security@soliidus.io)\n* Contact the core team on [Slack](http://slack.solidus.io/)\n",
  "id": "GHSA-qxmr-qxh6-2cc9",
  "modified": "2021-12-08T19:29:13Z",
  "published": "2021-12-07T22:01:47Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/solidusio/solidus/security/advisories/GHSA-qxmr-qxh6-2cc9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43805"
    },
    {
      "type": "WEB",
      "url": "https://github.com/solidusio/solidus/commit/6be174c955fad84017ca67589c676526bc5ade71"
    },
    {
      "type": "WEB",
      "url": "https://github.com/solidusio/solidus/commit/9867153e01e3c3b898cdbcedd7b43375ea922401"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/solidus_core/CVE-2021-43805.yml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/solidusio/solidus"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ReDos vulnerability on guest checkout email validation"
}

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.

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

GSD-2021-43805

CVE-2021-43805 (GCVE-0-2021-43805)

GHSA-QXMR-QXH6-2CC9

Impact

Patches

Workarounds

References

For more information

Tags

Sightings

Nomenclature

Related by attack behaviour