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": "\u003e= 1.20.0, \u003c 1.20.2"
                        },
                        {
                          "version_value": "\u003e= 1.19.0, \u003c 1.19.3"
                        },
                        {
                          "version_value": "\u003c 1.18.6"
                        },
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                          "version_value": "\u003e= 1.21.0, \u003c 1.21.1"
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            "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",
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            "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p"
          },
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            "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
              },
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                "cpe23Uri": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
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                "versionEndExcluding": "1.19.3",
                "versionStartIncluding": "1.19.0",
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                "cpe_name": [],
                "versionEndExcluding": "1.21.1",
                "versionStartIncluding": "1.21.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
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        ]
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          "ID": "CVE-2021-43824"
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        "data_version": "4.0",
        "description": {
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            }
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        "problemtype": {
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        "references": {
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            {
              "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"
            },
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              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
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            }
          ]
        }
      },
      "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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