gsd-2021-42717
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. Modsecurity 2 is similarly vulnerable: the affected versions include 2.8.0 through 2.9.4.
Aliases
Aliases
CVE-2021-42717


To clipboard 

{
   GSD: {
      alias: "CVE-2021-42717",
      description: "ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. Modsecurity 2 is similarly vulnerable: the affected versions include 2.8.0 through 2.9.4.",
      id: "GSD-2021-42717",
      references: [
         "https://www.suse.com/security/cve/CVE-2021-42717.html",
         "https://www.debian.org/security/2021/dsa-5023",
         "https://advisories.mageia.org/CVE-2021-42717.html",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2021-42717",
         ],
         details: "ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. Modsecurity 2 is similarly vulnerable: the affected versions include 2.8.0 through 2.9.4.",
         id: "GSD-2021-42717",
         modified: "2023-12-13T01:23:06.805406Z",
         schema_version: "1.4.0",
      },
   },
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            ID: "CVE-2021-42717",
            STATE: "PUBLIC",
         },
         affects: {
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               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "n/a",
                              version: {
                                 version_data: [
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                  url: "https://lists.debian.org/debian-lts-announce/2022/05/msg00042.html",
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                  cpe_match: [
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                     },
                     {
                        cpe23Uri: "cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*",
                        cpe_name: [],
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                     },
                     {
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                        cpe_name: [],
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            description: {
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            problemtype: {
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                           lang: "en",
                           value: "CWE-674",
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            references: {
               reference_data: [
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                     url: "https://lists.debian.org/debian-lts-announce/2022/05/msg00042.html",
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         },
         impact: {
            baseMetricV2: {
               acInsufInfo: false,
               cvssV2: {
                  accessComplexity: "LOW",
                  accessVector: "NETWORK",
                  authentication: "NONE",
                  availabilityImpact: "PARTIAL",
                  baseScore: 5,
                  confidentialityImpact: "NONE",
                  integrityImpact: "NONE",
                  vectorString: "AV:N/AC:L/Au:N/C:N/I:N/A:P",
                  version: "2.0",
               },
               exploitabilityScore: 10,
               impactScore: 2.9,
               obtainAllPrivilege: false,
               obtainOtherPrivilege: false,
               obtainUserPrivilege: false,
               severity: "MEDIUM",
               userInteractionRequired: false,
            },
            baseMetricV3: {
               cvssV3: {
                  attackComplexity: "LOW",
                  attackVector: "NETWORK",
                  availabilityImpact: "HIGH",
                  baseScore: 7.5,
                  baseSeverity: "HIGH",
                  confidentialityImpact: "NONE",
                  integrityImpact: "NONE",
                  privilegesRequired: "NONE",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  version: "3.1",
               },
               exploitabilityScore: 3.9,
               impactScore: 3.6,
            },
         },
         lastModifiedDate: "2022-09-03T03:33Z",
         publishedDate: "2021-12-07T22:15Z",
      },
   },
}


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