GHSA-82MM-FFJR-H86C

Vulnerability from github – Published: 2022-02-15 01:57 – Updated: 2023-10-02 13:07
VLAI?
Summary
Authorization bypass in Istio
Details

In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.

Specific Go Packages Affected

istio.io/istio/pilot/pkg/security/authz/model/matcher

Severity ?
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "istio.io/istio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.5.0"
            },
            {
              "fixed": "1.5.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "istio.io/istio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.6.0"
            },
            {
              "fixed": "1.6.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-16844"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-12T21:59:07Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.\n\n### Specific Go Packages Affected\nistio.io/istio/pilot/pkg/security/authz/model/matcher",
  "id": "GHSA-82mm-ffjr-h86c",
  "modified": "2023-10-02T13:07:29Z",
  "published": "2022-02-15T01:57:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-16844"
    },
    {
      "type": "WEB",
      "url": "https://github.com/istio/istio/commit/4c73414556b83f0e75c1b3a0a89a23103a71573c"
    },
    {
      "type": "WEB",
      "url": "https://github.com/istio/istio/commit/72d2e135374f421b656d6f1a21f474db46134ace"
    },
    {
      "type": "WEB",
      "url": "https://github.com/istio/istio/releases"
    },
    {
      "type": "WEB",
      "url": "https://github.com/istio/istio/releases/tag/1.5.9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/istio/istio/releases/tag/1.6.8"
    },
    {
      "type": "WEB",
      "url": "https://istio.io/latest/news/releases/1.5.x/announcing-1.5.9"
    },
    {
      "type": "WEB",
      "url": "https://istio.io/latest/news/releases/1.6.x/announcing-1.6.8"
    },
    {
      "type": "WEB",
      "url": "https://istio.io/latest/news/security/istio-security-2020-009"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Authorization bypass in Istio"
}


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