{
    "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": ">= 3.1.0, < 3.1.4"
                                        },
                                        {
                                            "version_value": ">= 3.0.0, < 3.0.4"
                                        },
                                        {
                                            "version_value": "< 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'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 The maintainers added a check for email addresses that are no longer valid that will print information about any affected orders that exist.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."
            }
        ]
    },
    "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"
    }
}