CVE-2024-45293 (GCVE-0-2024-45293)
Vulnerability from cvelistv5
Published
2024-10-07 20:03
Modified
2024-10-07 20:25
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Summary
PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The security scanner responsible for preventing XXE attacks in the XLSX reader can be bypassed by slightly modifying the XML structure, utilizing white-spaces. On servers that allow users to upload their own Excel (XLSX) sheets, Server files and sensitive information can be disclosed by providing a crafted sheet. The security scan function in src/PhpSpreadsheet/Reader/Security/XmlScanner.php contains a flawed XML encoding check to retrieve the input file's XML encoding in the toUtf8 function. The function searches for the XML encoding through a defined regex which looks for `encoding="*"` and/or `encoding='*'`, if not found, it defaults to the UTF-8 encoding which bypasses the conversion logic. This logic can be used to pass a UTF-7 encoded XXE payload, by utilizing a whitespace before or after the = in the attribute definition. Sensitive information disclosure through the XXE on sites that allow users to upload their own excel spreadsheets, and parse them using PHPSpreadsheet's Excel parser. This issue has been addressed in release versions 1.29.1, 2.1.1, and 2.3.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| PHPOffice | PhpSpreadsheet |
Version: >= 2.2.0, < 2.3.0 Version: < 1.29.1 Version: >= 2.0.0, < 2.1.1 |
{
"containers": {
"adp": [
{
"affected": [
{
"cpes": [
"cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "phpspreadsheet",
"vendor": "phpoffice",
"versions": [
{
"lessThan": "2.3.0",
"status": "affected",
"version": "2.2.0",
"versionType": "custom"
},
{
"lessThan": "1.29.1",
"status": "affected",
"version": "0",
"versionType": "custom"
},
{
"lessThan": "2.1.1",
"status": "affected",
"version": "2.0.0",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-45293",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-10-07T20:23:44.790245Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-10-07T20:25:10.635Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "PhpSpreadsheet",
"vendor": "PHPOffice",
"versions": [
{
"status": "affected",
"version": "\u003e= 2.2.0, \u003c 2.3.0"
},
{
"status": "affected",
"version": "\u003c 1.29.1"
},
{
"status": "affected",
"version": "\u003e= 2.0.0, \u003c 2.1.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The security scanner responsible for preventing XXE attacks in the XLSX reader can be bypassed by slightly modifying the XML structure, utilizing white-spaces. On servers that allow users to upload their own Excel (XLSX) sheets, Server files and sensitive information can be disclosed by providing a crafted sheet. The security scan function in src/PhpSpreadsheet/Reader/Security/XmlScanner.php contains a flawed XML encoding check to retrieve the input file\u0027s XML encoding in the toUtf8 function. The function searches for the XML encoding through a defined regex which looks for `encoding=\"*\"` and/or `encoding=\u0027*\u0027`, if not found, it defaults to the UTF-8 encoding which bypasses the conversion logic. This logic can be used to pass a UTF-7 encoded XXE payload, by utilizing a whitespace before or after the = in the attribute definition. Sensitive information disclosure through the XXE on sites that allow users to upload their own excel spreadsheets, and parse them using PHPSpreadsheet\u0027s Excel parser. This issue has been addressed in release versions 1.29.1, 2.1.1, and 2.3.0. All users are advised to upgrade. There are no known workarounds for this vulnerability."
}
],
"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": "2024-10-07T20:03:27.080Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-6hwr-6v2f-3m88",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-6hwr-6v2f-3m88"
}
],
"source": {
"advisory": "GHSA-6hwr-6v2f-3m88",
"discovery": "UNKNOWN"
},
"title": "XML External Entity Reference (XXE) in PHPSpreadsheet\u0027s XLSX reader"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2024-45293",
"datePublished": "2024-10-07T20:03:27.080Z",
"dateReserved": "2024-08-26T18:25:35.442Z",
"dateUpdated": "2024-10-07T20:25:10.635Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-45293\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-07T20:23:44.790245Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*\"], \"vendor\": \"phpoffice\", \"product\": \"phpspreadsheet\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.2.0\", \"lessThan\": \"2.3.0\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"1.29.1\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"2.0.0\", \"lessThan\": \"2.1.1\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-07T20:25:03.532Z\"}}], \"cna\": {\"title\": \"XML External Entity Reference (XXE) in PHPSpreadsheet\u0027s XLSX reader\", \"source\": {\"advisory\": \"GHSA-6hwr-6v2f-3m88\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"PHPOffice\", \"product\": \"PhpSpreadsheet\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 2.2.0, \u003c 2.3.0\"}, {\"status\": \"affected\", \"version\": \"\u003c 1.29.1\"}, {\"status\": \"affected\", \"version\": \"\u003e= 2.0.0, \u003c 2.1.1\"}]}], \"references\": [{\"url\": \"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-6hwr-6v2f-3m88\", \"name\": \"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-6hwr-6v2f-3m88\", \"tags\": [\"x_refsource_CONFIRM\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The security scanner responsible for preventing XXE attacks in the XLSX reader can be bypassed by slightly modifying the XML structure, utilizing white-spaces. On servers that allow users to upload their own Excel (XLSX) sheets, Server files and sensitive information can be disclosed by providing a crafted sheet. The security scan function in src/PhpSpreadsheet/Reader/Security/XmlScanner.php contains a flawed XML encoding check to retrieve the input file\u0027s XML encoding in the toUtf8 function. The function searches for the XML encoding through a defined regex which looks for `encoding=\\\"*\\\"` and/or `encoding=\u0027*\u0027`, if not found, it defaults to the UTF-8 encoding which bypasses the conversion logic. This logic can be used to pass a UTF-7 encoded XXE payload, by utilizing a whitespace before or after the = in the attribute definition. Sensitive information disclosure through the XXE on sites that allow users to upload their own excel spreadsheets, and parse them using PHPSpreadsheet\u0027s Excel parser. This issue has been addressed in release versions 1.29.1, 2.1.1, and 2.3.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-611\", \"description\": \"CWE-611: Improper Restriction of XML External Entity Reference\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2024-10-07T20:03:27.080Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-45293\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-10-07T20:25:10.635Z\", \"dateReserved\": \"2024-08-26T18:25:35.442Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2024-10-07T20:03:27.080Z\", \"assignerShortName\": \"GitHub_M\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…