fkie_cve-2017-8923
Vulnerability from fkie_nvd
Published
2017-05-12 20:29
Modified
2024-12-27 16:15
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
cve@mitre.orghttp://www.securityfocus.com/bid/98518Third Party Advisory, VDB Entry
cve@mitre.orghttps://bugs.php.net/bug.php?id=74577Exploit, Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/98518Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://bugs.php.net/bug.php?id=74577Exploit, Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20241227-0007/
Impacted products
Vendor Product Version
php php *
php php *


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "4491E273-5CD7-4133-89BF-182ED8C3E7D6",
                     versionEndExcluding: "7.4.24",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "35A8B10D-C9FF-474F-BEC1-196F6DDC4948",
                     versionEndExcluding: "8.0.11",
                     versionStartIncluding: "8.0.0",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   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 función zend_string_extend en el archivo Zend/zend_string.h en PHP hasta de la versión 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 denegación de servicio (bloqueo de aplicación) o posiblemente tener otro impacto no especificado  explotando el uso de scripts .= con una cadena larga.",
      },
   ],
   id: "CVE-2017-8923",
   lastModified: "2024-12-27T16:15:22.243",
   metrics: {
      cvssMetricV2: [
         {
            acInsufInfo: false,
            baseSeverity: "HIGH",
            cvssData: {
               accessComplexity: "LOW",
               accessVector: "NETWORK",
               authentication: "NONE",
               availabilityImpact: "PARTIAL",
               baseScore: 7.5,
               confidentialityImpact: "PARTIAL",
               integrityImpact: "PARTIAL",
               vectorString: "AV:N/AC:L/Au:N/C:P/I:P/A:P",
               version: "2.0",
            },
            exploitabilityScore: 10,
            impactScore: 6.4,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
            obtainUserPrivilege: false,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: false,
         },
      ],
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "NETWORK",
               availabilityImpact: "HIGH",
               baseScore: 9.8,
               baseSeverity: "CRITICAL",
               confidentialityImpact: "HIGH",
               integrityImpact: "HIGH",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
               version: "3.1",
            },
            exploitabilityScore: 3.9,
            impactScore: 5.9,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2017-05-12T20:29:00.500",
   references: [
      {
         source: "cve@mitre.org",
         tags: [
            "Third Party Advisory",
            "VDB Entry",
         ],
         url: "http://www.securityfocus.com/bid/98518",
      },
      {
         source: "cve@mitre.org",
         tags: [
            "Exploit",
            "Issue Tracking",
            "Vendor Advisory",
         ],
         url: "https://bugs.php.net/bug.php?id=74577",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Third Party Advisory",
            "VDB Entry",
         ],
         url: "http://www.securityfocus.com/bid/98518",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Exploit",
            "Issue Tracking",
            "Vendor Advisory",
         ],
         url: "https://bugs.php.net/bug.php?id=74577",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://security.netapp.com/advisory/ntap-20241227-0007/",
      },
   ],
   sourceIdentifier: "cve@mitre.org",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-787",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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