cvelist/2024/47xxx/CVE-2024-47873.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-47873",
        "ASSIGNER": "security-advisories@github.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. The XmlScanner class has a scan method which should prevent XXE attacks. However, prior to versions 1.9.4, 2.1.3, 2.3.2, and 3.4.0, the regexes used in the `scan` method and the findCharSet method can be bypassed by using UCS-4 and encoding guessing. An attacker can bypass the sanitizer and achieve an XML external entity attack. Versions 1.9.4, 2.1.3, 2.3.2, and 3.4.0 fix the issue."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-611: Improper Restriction of XML External Entity Reference",
                        "cweId": "CWE-611"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "PHPOffice",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "PhpSpreadsheet",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "< 1.29.4"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": ">= 2.0.0, < 2.1.3"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": ">= 2.2.0, < 2.3.2"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": ">= 3.3.0, < 3.4.0"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jw4x-v69f-hh5w",
                "refsource": "MISC",
                "name": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jw4x-v69f-hh5w"
            },
            {
                "url": "https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php",
                "refsource": "MISC",
                "name": "https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php"
            },
            {
                "url": "https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Processing",
                "refsource": "MISC",
                "name": "https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Processing"
            },
            {
                "url": "https://www.w3.org/TR/xml/#sec-guessing-no-ext-info",
                "refsource": "MISC",
                "name": "https://www.w3.org/TR/xml/#sec-guessing-no-ext-info"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-jw4x-v69f-hh5w",
        "discovery": "UNKNOWN"
    },
    "impact": {
        "cvss": [
            {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.1"
            }
        ]
    }
}