gsd-2023-3823
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
In PHP versions 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8 various XML functions rely on libxml global state to track configuration variables, like whether external entities are loaded. This state is assumed to be unchanged unless the user explicitly changes it by calling appropriate function. However, since the state is process-global, other modules - such as ImageMagick - may also use this library within the same process, and change that global state for their internal purposes, and leave it in a state where external entities loading is enabled. This can lead to the situation where external XML is parsed with external entities loaded, which can lead to disclosure of any local files accessible to PHP. This vulnerable state may persist in the same process across many requests, until the process is shut down.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2023-3823",
"id": "GSD-2023-3823"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2023-3823"
],
"details": "In PHP versions 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8 various XML functions rely on libxml global state to track configuration variables, like whether external entities are loaded. This state is assumed to be unchanged unless the user explicitly changes it by calling appropriate function. However, since the state is process-global, other modules - such as\u00a0ImageMagick - may also use this library within the same process, and change that global state for their internal purposes, and leave it in a state where external entities loading is enabled. This can lead to the situation where external XML is parsed with external entities loaded, which can lead to disclosure of any local files accessible to PHP. This vulnerable state may persist in the same process across many requests, until the process is shut down.\u00a0\n\n",
"id": "GSD-2023-3823",
"modified": "2023-12-13T01:20:55.225560Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "security@php.net",
"ID": "CVE-2023-3823",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "PHP",
"version": {
"version_data": [
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
"defaultStatus": "affected",
"versions": [
{
"lessThan": "8.0.30",
"status": "affected",
"version": "8.0.*",
"versionType": "semver"
},
{
"lessThan": "8.1.22",
"status": "affected",
"version": "8.1.*",
"versionType": "semver"
},
{
"lessThan": "8.2.8",
"status": "affected",
"version": "8.2.*",
"versionType": "semver"
}
]
}
}
]
}
}
]
},
"vendor_name": "PHP Group"
}
]
}
},
"credits": [
{
"lang": "en",
"value": "Joas Schilling"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In PHP versions 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8 various XML functions rely on libxml global state to track configuration variables, like whether external entities are loaded. This state is assumed to be unchanged unless the user explicitly changes it by calling appropriate function. However, since the state is process-global, other modules - such as\u00a0ImageMagick - may also use this library within the same process, and change that global state for their internal purposes, and leave it in a state where external entities loading is enabled. This can lead to the situation where external XML is parsed with external entities loaded, which can lead to disclosure of any local files accessible to PHP. This vulnerable state may persist in the same process across many requests, until the process is shut down.\u00a0\n\n"
}
]
},
"generator": {
"engine": "Vulnogram 0.1.0-dev"
},
"impact": {
"cvss": [
{
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L",
"version": "3.1"
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/php/php-src/security/advisories/GHSA-3qrf-m4j2-pcrr",
"refsource": "MISC",
"url": "https://github.com/php/php-src/security/advisories/GHSA-3qrf-m4j2-pcrr"
},
{
"name": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7NBF77WN6DTVTY2RE73IGPYD6M4PIAWA/",
"refsource": "MISC",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7NBF77WN6DTVTY2RE73IGPYD6M4PIAWA/"
},
{
"name": "https://security.netapp.com/advisory/ntap-20230825-0001/",
"refsource": "MISC",
"url": "https://security.netapp.com/advisory/ntap-20230825-0001/"
},
{
"name": "https://lists.debian.org/debian-lts-announce/2023/09/msg00002.html",
"refsource": "MISC",
"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00002.html"
}
]
},
"source": {
"advisory": "https://github.com/php/php-src/security/advisories/GHSA-3qrf-m4j",
"discovery": "EXTERNAL"
},
"work_around": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Disable external entity loader, e.g. like this:\u0026nbsp;\u003cpre\u003elibxml_set_external_entity_loader(function () { return null; });\u003c/pre\u003e\u003cbr\u003e"
}
],
"value": "Disable external entity loader, e.g. like this:\u00a0libxml_set_external_entity_loader(function () { return null; });\n\n\n"
}
]
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "8.1.22",
"versionStartIncluding": "8.1.0",
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "8.0.30",
"versionStartIncluding": "8.0.0",
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "8.2.9",
"versionStartIncluding": "8.2.0",
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
}
],
"operator": "OR"
}
]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "security@php.net",
"ID": "CVE-2023-3823"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "In PHP versions 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8 various XML functions rely on libxml global state to track configuration variables, like whether external entities are loaded. This state is assumed to be unchanged unless the user explicitly changes it by calling appropriate function. However, since the state is process-global, other modules - such as\u00a0ImageMagick - may also use this library within the same process, and change that global state for their internal purposes, and leave it in a state where external entities loading is enabled. This can lead to the situation where external XML is parsed with external entities loaded, which can lead to disclosure of any local files accessible to PHP. This vulnerable state may persist in the same process across many requests, until the process is shut down.\u00a0\n\n"
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-611"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/php/php-src/security/advisories/GHSA-3qrf-m4j2-pcrr",
"refsource": "MISC",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://github.com/php/php-src/security/advisories/GHSA-3qrf-m4j2-pcrr"
},
{
"name": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7NBF77WN6DTVTY2RE73IGPYD6M4PIAWA/",
"refsource": "MISC",
"tags": [
"Mailing List"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7NBF77WN6DTVTY2RE73IGPYD6M4PIAWA/"
},
{
"name": "https://security.netapp.com/advisory/ntap-20230825-0001/",
"refsource": "MISC",
"tags": [
"Third Party Advisory"
],
"url": "https://security.netapp.com/advisory/ntap-20230825-0001/"
},
{
"name": "https://lists.debian.org/debian-lts-announce/2023/09/msg00002.html",
"refsource": "MISC",
"tags": [
"Mailing List"
],
"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00002.html"
}
]
}
},
"impact": {
"baseMetricV3": {
"cvssV3": {
"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"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
},
"lastModifiedDate": "2023-10-27T18:58Z",
"publishedDate": "2023-08-11T06:15Z"
}
}
}
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.
- 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.