cve-2021-39156
Vulnerability from cvelistv5
Published
2021-08-24 22:30
Modified
2024-08-04 01:58
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Summary
Fragments in Path May Lead to Authorization Policy Bypass
References
security-advisories@github.comhttps://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4rThird Party Advisory
security-advisories@github.comhttps://istio.io/latest/news/security/istio-security-2021-008Vendor Advisory
Impacted products
istioistio
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T01:58:18.136Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4r"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://istio.io/latest/news/security/istio-security-2021-008"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "istio",
          "vendor": "istio",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.9.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.10.0, \u003c 1.10.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.11.0, \u003c 1.11.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. Istio 1.11.0, 1.10.3 and below, and 1.9.7 and below contain a remotely exploitable vulnerability where an HTTP request with `#fragment` in the path may bypass Istio\u2019s URI path based authorization policies. Patches are available in Istio 1.11.1, Istio 1.10.4 and Istio 1.9.8. As a work around a Lua filter may be written to normalize the path."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-08-24T22:30:12",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4r"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://istio.io/latest/news/security/istio-security-2021-008"
        }
      ],
      "source": {
        "advisory": "GHSA-hqxw-mm44-gc4r",
        "discovery": "UNKNOWN"
      },
      "title": "Fragments in Path May Lead to Authorization Policy Bypass",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-39156",
          "STATE": "PUBLIC",
          "TITLE": "Fragments in Path May Lead to Authorization Policy Bypass"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "istio",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c 1.9.8"
                          },
                          {
                            "version_value": "\u003e= 1.10.0, \u003c 1.10.4"
                          },
                          {
                            "version_value": "\u003e= 1.11.0, \u003c 1.11.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "istio"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. Istio 1.11.0, 1.10.3 and below, and 1.9.7 and below contain a remotely exploitable vulnerability where an HTTP request with `#fragment` in the path may bypass Istio\u2019s URI path based authorization policies. Patches are available in Istio 1.11.1, Istio 1.10.4 and Istio 1.9.8. As a work around a Lua filter may be written to normalize the path."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-863: Incorrect Authorization"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4r",
              "refsource": "CONFIRM",
              "url": "https://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4r"
            },
            {
              "name": "https://istio.io/latest/news/security/istio-security-2021-008",
              "refsource": "MISC",
              "url": "https://istio.io/latest/news/security/istio-security-2021-008"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-hqxw-mm44-gc4r",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-39156",
    "datePublished": "2021-08-24T22:30:12",
    "dateReserved": "2021-08-16T00:00:00",
    "dateUpdated": "2024-08-04T01:58:18.136Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-39156\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2021-08-24T23:15:10.413\",\"lastModified\":\"2023-11-07T03:37:34.650\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. Istio 1.11.0, 1.10.3 and below, and 1.9.7 and below contain a remotely exploitable vulnerability where an HTTP request with `#fragment` in the path may bypass Istio\u2019s URI path based authorization policies. Patches are available in Istio 1.11.1, Istio 1.10.4 and Istio 1.9.8. As a work around a Lua filter may be written to normalize the path.\"},{\"lang\":\"es\",\"value\":\"Istio es una plataforma de c\u00f3digo abierto que proporciona una forma uniforme de integrar microservicios, administrar el flujo de tr\u00e1fico entre microservicios, aplicar pol\u00edticas y agregar datos de telemetr\u00eda. Istio versiones 1.11.0, 1.10.3 y por debajo, y versiones 1.9.7 y por debajo, contienen una vulnerabilidad explotable de forma remota en la que una petici\u00f3n HTTP con el par\u00e1metro \\\"#fragment\\\" en la ruta puede omitir las pol\u00edticas de autorizaci\u00f3n basadas en la ruta URI de Istio. Los parches est\u00e1n disponibles en Istio versi\u00f3n 1.11.1, Istio versi\u00f3n 1.10.4 e Istio versi\u00f3n 1.9.8. Como soluci\u00f3n, puede escribirse un filtro Lua para normalizar la ruta.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6},{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\",\"baseScore\":8.1,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.2}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:N/A:N\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\",\"baseScore\":5.0},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-706\"}]},{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-863\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.9.8\",\"matchCriteriaId\":\"2FBF48C6-1E39-4692-A652-27E7DCDC81BC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.10.0\",\"versionEndExcluding\":\"1.10.3\",\"matchCriteriaId\":\"69176EED-4FB2-4CDF-A510-90C6F46C3E86\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.11.0\",\"versionEndExcluding\":\"1.11.1\",\"matchCriteriaId\":\"886DF572-26C9-4BC9-875F-F043D445C346\"}]}]}],\"references\":[{\"url\":\"https://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4r\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://istio.io/latest/news/security/istio-security-2021-008\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Vendor Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.