fkie_cve-2021-21708
Vulnerability from fkie_nvd
Published
2022-02-27 08:15
Modified
2024-11-21 05:48
Severity ?
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.
References
security@php.nethttps://bugs.php.net/bug.php?id=81708Exploit, Issue Tracking, Patch, Vendor Advisory
security@php.nethttps://security.gentoo.org/glsa/202209-20Third Party Advisory
security@php.nethttps://security.netapp.com/advisory/ntap-20220325-0004/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugs.php.net/bug.php?id=81708Exploit, Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202209-20Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20220325-0004/Third Party Advisory
Impacted products
Vendor Product Version
php php *
php php *
php php *


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "07B88F14-3867-49F4-8BE6-64E1D98927AB",
                     versionEndExcluding: "7.4.28",
                     versionStartIncluding: "7.4.0",
                     vulnerable: true,
                  },
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                  {
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               negate: false,
               operator: "OR",
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   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.",
      },
      {
         lang: "es",
         value: "En PHP versiones 7.4.x anteriores a 7.4.28, versiones 8.0.x anteriores a 8.0.16 y versiones 8.1.x anteriores a 8.1.3, cuando son usados funciones de filtrado con el filtro FILTER_VALIDATE_FLOAT y los límites mínimo/máximo, si el filtro falla, se presenta la posibilidad de que sea activado el uso de la memoria asignada después de liberarla, lo que puede resultar en un bloqueo, y potencialmente la sobreescritura de otros trozos de memoria y RCE. Este problema afecta a: el código que usa FILTER_VALIDATE_FLOAT con límites mín/máx.",
      },
   ],
   id: "CVE-2021-21708",
   lastModified: "2024-11-21T05:48:52.737",
   metrics: {
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            acInsufInfo: false,
            baseSeverity: "MEDIUM",
            cvssData: {
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               accessVector: "NETWORK",
               authentication: "NONE",
               availabilityImpact: "PARTIAL",
               baseScore: 6.8,
               confidentialityImpact: "PARTIAL",
               integrityImpact: "PARTIAL",
               vectorString: "AV:N/AC:M/Au:N/C:P/I:P/A:P",
               version: "2.0",
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            exploitabilityScore: 8.6,
            impactScore: 6.4,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
            obtainUserPrivilege: false,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: false,
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      cvssMetricV31: [
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               attackVector: "NETWORK",
               availabilityImpact: "LOW",
               baseScore: 8.2,
               baseSeverity: "HIGH",
               confidentialityImpact: "NONE",
               integrityImpact: "HIGH",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
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            type: "Secondary",
         },
         {
            cvssData: {
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               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",
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            impactScore: 5.9,
            source: "nvd@nist.gov",
            type: "Primary",
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   },
   published: "2022-02-27T08:15:06.817",
   references: [
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         source: "security@php.net",
         tags: [
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            "Issue Tracking",
            "Patch",
            "Vendor Advisory",
         ],
         url: "https://bugs.php.net/bug.php?id=81708",
      },
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   sourceIdentifier: "security@php.net",
   vulnStatus: "Modified",
   weaknesses: [
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         description: [
            {
               lang: "en",
               value: "CWE-416",
            },
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         source: "security@php.net",
         type: "Secondary",
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      {
         description: [
            {
               lang: "en",
               value: "CWE-416",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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