gsd-2021-39156
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
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’s 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.
Aliases
Aliases
CVE-2021-39156


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-39156",
    "description": "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.",
    "id": "GSD-2021-39156",
    "references": [
      "https://access.redhat.com/errata/RHSA-2021:3273",
      "https://access.redhat.com/errata/RHSA-2021:3272",
      "https://security.archlinux.org/CVE-2021-39156"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-39156"
      ],
      "details": "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.",
      "id": "GSD-2021-39156",
      "modified": "2023-12-13T01:23:16.024710Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2021-39156",
        "STATE": "PUBLIC",
        "TITLE": "Fragments in Path May Lead to Authorization Policy Bypass"
      },
      "affects": {
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          "vendor_data": [
            {
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                  {
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          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
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          }
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      },
      "source": {
        "advisory": "GHSA-hqxw-mm44-gc4r",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c1.9.8||\u003e=1.10.0 \u003c1.10.4||=1.11.0",
          "affected_versions": "All versions before 1.9.8, all versions starting from 1.10.0 before 1.10.4, version 1.11.0",
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          "cwe_ids": [
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            "CWE-937"
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          "date": "2021-10-21",
          "description": "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\u00e2\u20ac\u2122s 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.",
          "fixed_versions": [
            "1.9.8",
            "1.10.4",
            "1.11.1"
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          "identifier": "CVE-2021-39156",
          "identifiers": [
            "GHSA-hqxw-mm44-gc4r",
            "CVE-2021-39156"
          ],
          "not_impacted": "All versions starting from 1.9.8 before 1.10.0, all versions starting from 1.10.4 before 1.11.0, all versions after 1.11.0",
          "package_slug": "go/Istio.io/istio",
          "pubdate": "2021-08-30",
          "solution": "Upgrade to versions 1.9.8, 1.10.4, 1.11.1 or above.",
          "title": "Incorrect Authorization",
          "urls": [
            "https://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4r",
            "https://nvd.nist.gov/vuln/detail/CVE-2021-39156",
            "https://istio.io/latest/news/security/istio-security-2021-008",
            "https://github.com/advisories/GHSA-hqxw-mm44-gc4r"
          ],
          "uuid": "eb7fa8c3-75a6-466c-8eb4-dfcacfe263b1"
        },
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          "affected_range": "\u003c1.9.8||\u003e=1.10.0 \u003c1.10.3||\u003e=1.11.0 \u003c1.11.1",
          "affected_versions": "All versions before 1.9.8, all versions starting from 1.10.0 before 1.10.3, all versions starting from 1.11.0 before 1.11.1",
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          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "cwe_ids": [
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            "CWE-706",
            "CWE-937"
          ],
          "date": "2022-08-12",
          "description": "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 contains a remotely exploitable vulnerability where an HTTP request with `#fragment` in the path may bypass Istio\u0027s URI path based authorization policies. As a work around a Lua filter may be written to normalize the path.",
          "fixed_versions": [
            "1.9.8",
            "1.10.3",
            "1.11.1"
          ],
          "identifier": "CVE-2021-39156",
          "identifiers": [
            "CVE-2021-39156",
            "GHSA-hqxw-mm44-gc4r"
          ],
          "not_impacted": "",
          "package_slug": "go/github.com/istio/istio",
          "pubdate": "2021-08-24",
          "solution": "Upgrade to versions 1.9.8, 1.10.3, 1.11.1 or above.",
          "title": "Incorrect Authorization",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-39156",
            "https://istio.io/latest/news/security/istio-security-2021-008"
          ],
          "uuid": "dc44012e-9adb-4924-b4e2-c4cd889e98d2"
        }
      ]
    },
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                "versionEndExcluding": "1.11.1",
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      "impact": {
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          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
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          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
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            "attackVector": "NETWORK",
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            "confidentialityImpact": "HIGH",
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          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-08-12T18:01Z",
      "publishedDate": "2021-08-24T23:15Z"
    }
  }
}


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