ghsa-h6xx-pmxh-3wgp
Vulnerability from github
Published
2022-04-12 22:41
Modified
2023-08-30 11:13
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
go.etcd.io/etcd Authentication Bypass
Details

etcd versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11 are vulnerable to an improper authentication issue when role-based access control (RBAC) is used and client-cert-auth is enabled. If an etcd client server TLS certificate contains a Common Name (CN) which matches a valid RBAC username, a remote attacker may authenticate as that user with any valid (trusted) client certificate in a REST API request to the gRPC-gateway.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "go.etcd.io/etcd/v3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.2.0"
            },
            {
              "fixed": "3.2.26"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "go.etcd.io/etcd/v3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.3.0"
            },
            {
              "fixed": "3.3.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "go.etcd.io/etcd"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.5.0-alpha.5.0.20190108173120-83c051b701d3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-16886"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-285",
      "CWE-287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-19T21:49:34Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "etcd versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11 are vulnerable to an improper authentication issue when role-based access control (RBAC) is used and client-cert-auth is enabled. If an etcd client server TLS certificate contains a Common Name (CN) which matches a valid RBAC username, a remote attacker may authenticate as that user with any valid (trusted) client certificate in a REST API request to the gRPC-gateway.",
  "id": "GHSA-h6xx-pmxh-3wgp",
  "modified": "2023-08-30T11:13:45Z",
  "published": "2022-04-12T22:41:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-16886"
    },
    {
      "type": "WEB",
      "url": "https://github.com/etcd-io/etcd/pull/10366"
    },
    {
      "type": "WEB",
      "url": "https://github.com/etcd-io/etcd/commit/0191509637546621d6f2e18e074e955ab8ef374d"
    },
    {
      "type": "WEB",
      "url": "https://github.com/etcd-io/etcd/commit/bf9d0d8291dc71ecbfb2690612954e1a298154b2"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:0237"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:1352"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/etcd-io/etcd"
    },
    {
      "type": "WEB",
      "url": "https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication"
    },
    {
      "type": "WEB",
      "url": "https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2021-0077"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/106540"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "go.etcd.io/etcd Authentication Bypass"
}


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