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{
"id": "CVE-2017-8923",
"sourceIdentifier": "cve@mitre.org",
"published": "2017-05-12T20:29:00.500",
"lastModified": "2022-07-20T16:32:35.920",
"vulnStatus": "Analyzed",
"descriptions": [
{
"lang": "en",
"value": "The zend_string_extend function in Zend/zend_string.h in PHP through 7.1.5 does not prevent changes to string objects that result in a negative length, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact by leveraging a script's use of .= with a long string."
},
{
"lang": "es",
"value": "La funci\u00f3n zend_string_extend en el archivo Zend/zend_string.h en PHP hasta de la versi\u00f3n 7.1.5 no impide cambios en los objetos de cadena que resultan en una longitud negativa, lo que permite a los atacantes remotos causar una denegaci\u00f3n de servicio (bloqueo de aplicaci\u00f3n) o posiblemente tener otro impacto no especificado explotando el uso de scripts .= con una cadena larga."
}
],
"metrics": {
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{
"source": "nvd@nist.gov",
"type": "Primary",
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"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9
}
],
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"accessVector": "NETWORK",
"accessComplexity": "LOW",
"authentication": "NONE",
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5
},
"baseSeverity": "HIGH",
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"acInsufInfo": false,
"obtainAllPrivilege": false,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
]
},
"weaknesses": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-787"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
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"references": [
{
"url": "http://www.securityfocus.com/bid/98518",
"source": "cve@mitre.org",
"tags": [
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]
},
{
"url": "https://bugs.php.net/bug.php?id=74577",
"source": "cve@mitre.org",
"tags": [
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}
]
}