fkie_cve-2021-43824
Vulnerability from fkie_nvd
Published
2022-02-22 23:15
Modified
2024-11-21 06:29
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Envoy is an open source edge and service proxy, designed for cloud-native applications. In affected versions a crafted request crashes Envoy when a CONNECT request is sent to JWT filter configured with regex match. This provides a denial of service attack vector. The only workaround is to not use regex in the JWT filter. Users are advised to upgrade.
References
security-advisories@github.comhttps://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253aPatch, Third Party Advisory
security-advisories@github.comhttps://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2pIssue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253aPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2pIssue Tracking, Third Party Advisory
Impacted products
Vendor Product Version
envoyproxy envoy *
envoyproxy envoy *
envoyproxy envoy *
envoyproxy envoy *


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "0EFC93D0-C206-417C-81D0-F18145E3D768",
                     versionEndExcluding: "1.18.6",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "2812AC62-44B5-4077-862D-A221CD88981D",
                     versionEndExcluding: "1.19.3",
                     versionStartIncluding: "1.19.0",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "F5441B2D-F807-4ED9-AFB9-ED4DE07CE5F8",
                     versionEndExcluding: "1.20.2",
                     versionStartIncluding: "1.20.0",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "83895D03-DAD1-4893-8A1C-F9143DEEC172",
                     versionEndExcluding: "1.21.1",
                     versionStartIncluding: "1.21.0",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "Envoy is an open source edge and service proxy, designed for cloud-native applications. In affected versions a crafted request crashes Envoy when a CONNECT request is sent to JWT filter configured with regex match. This provides a denial of service attack vector. The only workaround is to not use regex in the JWT filter. Users are advised to upgrade.",
      },
      {
         lang: "es",
         value: "Envoy es un proxy de borde y servicio de código abierto, diseñado para aplicaciones nativas de la nube. En las versiones afectadas, una solicitud crafteada bloquea Envoy cuando se envía una solicitud CONNECT al filtro JWT configurado con coincidencia regex. Esto proporciona un vector de ataque de denegación de servicio. La única medida de mitigación es no utilizar regex en el filtro JWT. Se aconseja a los usuarios que actualicen",
      },
   ],
   id: "CVE-2021-43824",
   lastModified: "2024-11-21T06:29:52.380",
   metrics: {
      cvssMetricV2: [
         {
            acInsufInfo: false,
            baseSeverity: "MEDIUM",
            cvssData: {
               accessComplexity: "MEDIUM",
               accessVector: "NETWORK",
               authentication: "NONE",
               availabilityImpact: "PARTIAL",
               baseScore: 4.3,
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               vectorString: "AV:N/AC:M/Au:N/C:N/I:N/A:P",
               version: "2.0",
            },
            exploitabilityScore: 8.6,
            impactScore: 2.9,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
            obtainUserPrivilege: false,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: false,
         },
      ],
      cvssMetricV31: [
         {
            cvssData: {
               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,
            source: "security-advisories@github.com",
            type: "Secondary",
         },
         {
            cvssData: {
               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,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2022-02-22T23:15:10.813",
   references: [
      {
         source: "security-advisories@github.com",
         tags: [
            "Patch",
            "Third Party Advisory",
         ],
         url: "https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a",
      },
      {
         source: "security-advisories@github.com",
         tags: [
            "Issue Tracking",
            "Third Party Advisory",
         ],
         url: "https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Patch",
            "Third Party Advisory",
         ],
         url: "https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Issue Tracking",
            "Third Party Advisory",
         ],
         url: "https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p",
      },
   ],
   sourceIdentifier: "security-advisories@github.com",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-476",
            },
         ],
         source: "security-advisories@github.com",
         type: "Primary",
      },
   ],
}


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