gsd-2021-43824
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
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.
Aliases
Aliases
CVE-2021-43824


To clipboard 

{
   GSD: {
      alias: "CVE-2021-43824",
      description: "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.\n",
      id: "GSD-2021-43824",
      references: [
         "https://www.suse.com/security/cve/CVE-2021-43824.html",
         "https://access.redhat.com/errata/RHSA-2022:1275",
         "https://access.redhat.com/errata/RHSA-2022:1276",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2021-43824",
         ],
         details: "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.",
         id: "GSD-2021-43824",
         modified: "2023-12-13T01:23:25.929101Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "security-advisories@github.com",
            ID: "CVE-2021-43824",
            STATE: "PUBLIC",
            TITLE: "Null pointer dereference in envoy",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "envoy",
                              version: {
                                 version_data: [
                                    {
                                       version_value: ">= 1.20.0, < 1.20.2",
                                    },
                                    {
                                       version_value: ">= 1.19.0, < 1.19.3",
                                    },
                                    {
                                       version_value: "< 1.18.6",
                                    },
                                    {
                                       version_value: ">= 1.21.0, < 1.21.1",
                                    },
                                 ],
                              },
                           },
                        ],
                     },
                     vendor_name: "envoyproxy",
                  },
               ],
            },
         },
         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
               {
                  lang: "eng",
                  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.",
               },
            ],
         },
         impact: {
            cvss: {
               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",
            },
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        lang: "eng",
                        value: "CWE-476: NULL Pointer Dereference",
                     },
                  ],
               },
            ],
         },
         references: {
            reference_data: [
               {
                  name: "https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p",
                  refsource: "CONFIRM",
                  url: "https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p",
               },
               {
                  name: "https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a",
                  refsource: "MISC",
                  url: "https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a",
               },
            ],
         },
         source: {
            advisory: "GHSA-vj5m-rch8-5r2p",
            discovery: "UNKNOWN",
         },
      },
      "nvd.nist.gov": {
         configurations: {
            CVE_data_version: "4.0",
            nodes: [
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "1.18.6",
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "1.19.3",
                        versionStartIncluding: "1.19.0",
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "1.20.2",
                        versionStartIncluding: "1.20.0",
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "1.21.1",
                        versionStartIncluding: "1.21.0",
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
            ],
         },
         cve: {
            CVE_data_meta: {
               ASSIGNER: "security-advisories@github.com",
               ID: "CVE-2021-43824",
            },
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
               description_data: [
                  {
                     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.",
                  },
               ],
            },
            problemtype: {
               problemtype_data: [
                  {
                     description: [
                        {
                           lang: "en",
                           value: "CWE-476",
                        },
                     ],
                  },
               ],
            },
            references: {
               reference_data: [
                  {
                     name: "https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p",
                     refsource: "CONFIRM",
                     tags: [
                        "Issue Tracking",
                        "Third Party Advisory",
                     ],
                     url: "https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p",
                  },
                  {
                     name: "https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a",
                     refsource: "MISC",
                     tags: [
                        "Patch",
                        "Third Party Advisory",
                     ],
                     url: "https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a",
                  },
               ],
            },
         },
         impact: {
            baseMetricV2: {
               acInsufInfo: false,
               cvssV2: {
                  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,
               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: "2022-03-01T20:47Z",
         publishedDate: "2022-02-22T23:15Z",
      },
   },
}


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