cve-2024-47873
Vulnerability from cvelistv5
Published
2024-11-18 17:03
Modified
2024-11-18 18:28
Summary
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.
Impacted products
Vendor Product Version
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "phpspreadsheet",
            "vendor": "phpoffice",
            "versions": [
              {
                "lessThan": "1.29.4",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              },
              {
                "lessThan": "2.1.3",
                "status": "affected",
                "version": "2.0.0",
                "versionType": "custom"
              },
              {
                "lessThan": "2.3.2",
                "status": "affected",
                "version": "2.2.0",
                "versionType": "custom"
              },
              {
                "lessThan": "3.4.0",
                "status": "affected",
                "version": "3.3.0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-47873",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-18T18:28:33.862619Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-18T18:28:36.292Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "PhpSpreadsheet",
          "vendor": "PHPOffice",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.29.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.0.0, \u003c 2.1.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.2.0, \u003c 2.3.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.3.0, \u003c 3.4.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-611",
              "description": "CWE-611: Improper Restriction of XML External Entity Reference",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-18T17:03:00.366Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jw4x-v69f-hh5w",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jw4x-v69f-hh5w"
        },
        {
          "name": "https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php"
        },
        {
          "name": "https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Processing",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Processing"
        },
        {
          "name": "https://www.w3.org/TR/xml/#sec-guessing-no-ext-info",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.w3.org/TR/xml/#sec-guessing-no-ext-info"
        }
      ],
      "source": {
        "advisory": "GHSA-jw4x-v69f-hh5w",
        "discovery": "UNKNOWN"
      },
      "title": "PhpSpreadsheet XmlScanner bypass leads to XXE"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-47873",
    "datePublished": "2024-11-18T17:03:00.366Z",
    "dateReserved": "2024-10-04T16:00:09.629Z",
    "dateUpdated": "2024-11-18T18:28:36.292Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-47873\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2024-11-18T17:15:11.973\",\"lastModified\":\"2024-11-19T21:57:56.293\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"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.\"},{\"lang\":\"es\",\"value\":\"PhpSpreadsheet es una librer\u00eda PHP para leer y escribir archivos de hojas de c\u00e1lculo. La clase XmlScanner tiene un m\u00e9todo de escaneo que deber\u00eda evitar ataques XXE. Sin embargo, antes de las versiones 1.9.4, 2.1.3, 2.3.2 y 3.4.0, las expresiones regulares utilizadas en el m\u00e9todo `scan` y en el m\u00e9todo findCharSet se pueden omitir utilizando UCS-4 y adivinando la codificaci\u00f3n. Un atacante puede omitir el desinfectante y lograr un ataque de entidad externa XML. Las versiones 1.9.4, 2.1.3, 2.3.2 y 3.4.0 solucionan el problema.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-611\"}]}],\"references\":[{\"url\":\"https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jw4x-v69f-hh5w\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Processing\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://www.w3.org/TR/xml/#sec-guessing-no-ext-info\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}


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