{
  "schema_version": "1.4.0",
  "id": "GHSA-rw54-6826-c8j5",
  "modified": "2023-12-22T22:24:09Z",
  "published": "2023-12-18T19:34:20Z",
  "aliases": [
    "CVE-2023-50714"
  ],
  "summary": "yiisoft/yii2-authclient's Oauth2 PKCE implementation is vulnerable",
  "details": "### Impact\n_What kind of vulnerability is it? Who is impacted?_\n\nOriginal Report:\n\n> The Oauth2 PKCE implementation is vulnerable in 2 ways:\n> 1. The `authCodeVerifier` should be removed after usage (similar to 'authState')\n> 2. There is a risk for a \"downgrade attack\" if PKCE is being relied on for CSRF protection.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\n2.2.15\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nnot known yet.\n\n### References\n_Are there any links users can visit to find out more?_\n",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "yiisoft/yii2-authclient"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.15"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/yiisoft/yii2-authclient/security/advisories/GHSA-rw54-6826-c8j5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-50714"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yiisoft/yii2-authclient/commit/721ed974bc44137437b0cdc8454e137fff8db213"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/yiisoft/yii2-authclient"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth1.php#L158"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth2.php#L121"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OpenIdConnect.php#L420"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287",
      "CWE-347"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2023-12-18T19:34:20Z",
    "nvd_published_at": "2023-12-22T19:15:09Z"
  }
}