GHSA-2WMF-P7F8-W42H

Vulnerability from github – Published: 2022-05-24 16:44 – Updated: 2023-08-24 13:07
VLAI
Summary
EnvoyProxy Envoy Missing HTTP URL path normalization
Details

Envoy 1.9.0 and before does not normalize HTTP URL paths. A remote attacker may craft a relative path, e.g., something/../admin, to bypass access control, e.g., a block on /admin. A backend server could then interpret the non-normalized path and provide an attacker access beyond the scope provided for by the access control policy.

Severity
10.0 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.9.0"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/envoyproxy/envoy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.9.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2019-9901"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-706"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-07-14T20:27:42Z",
    "nvd_published_at": "2019-04-25T16:29:00Z",
    "severity": "CRITICAL"
  },
  "details": "Envoy 1.9.0 and before does not normalize HTTP URL paths. A remote attacker may craft a relative path, e.g., `something/../admin`, to bypass access control, e.g., a block on `/admin`. A backend server could then interpret the non-normalized path and provide an attacker access beyond the scope provided for by the access control policy.",
  "id": "GHSA-2wmf-p7f8-w42h",
  "modified": "2023-08-24T13:07:21Z",
  "published": "2022-05-24T16:44:38Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-xcx5-93pw-jw2w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9901"
    },
    {
      "type": "WEB",
      "url": "https://github.com/envoyproxy/envoy/issues/6435"
    },
    {
      "type": "WEB",
      "url": "https://github.com/envoyproxy/envoy/commit/e668e669677e52a00d99652b5a260d1cedafdfa8"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/envoyproxy/envoy"
    },
    {
      "type": "WEB",
      "url": "https://github.com/envoyproxy/envoy/blob/main/security/postmortems/cve-2019-9900.md"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/forum/#!topic/envoy-announce/VoHfnDqZiAM"
    },
    {
      "type": "WEB",
      "url": "https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "EnvoyProxy Envoy Missing HTTP URL path normalization"
}



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