CVE-2022-35943: Codeigniter4/shield CodeIgniter Shield Vulnerable To SameSite Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-5hm8-vh6r-2cjq",
  "modified" : "2022-08-18T19:03:34Z",
  "published" : "2022-08-18T19:03:34Z",
  "aliases" : [ "CVE-2022-35943" ],
  "summary" : "CodeIgniter Shield Vulnerable to SameSite Attackers Bypassing the CSRF Protection",
  "details" : "### Impact\nThis vulnerability may allow [SameSite Attackers](https://canitakeyoursubdomain.name/) to bypass the [CodeIgniter4 CSRF protection](https://codeigniter4.github.io/userguide/libraries/security.html) mechanism with CodeIgniter Shield.\n\nFor this attack to succeed, the attacker must have direct (or indirect, e.g., XSS) control over a subdomain site (e.g., `https://a.example.com/`) of the target site (e.g., `http://example.com/`).\n\nThis vulnerability exists whether `Config\\Security::$csrfProtection` is `'cookie'` or `'session'`.\nIt is also exploitable whether `Config\\Security::$regenerate` is `true` or `false`.\n\n### Patches\nUpgrade to **CodeIgniter v4.2.3 or later** and **Shield v1.0.0-beta.2 or later**.\n\n### Workarounds\nDo all of the following:\n- set `Config\\Security::$csrfProtection` to `'session'`\n- remove old session data right after login (immediately after ID and password match)\n- regenerate CSRF token right after login (immediately after ID and password match)\n\n### References\n- [CodeIgniter4 CSRF Protection](https://codeigniter4.github.io/userguide/libraries/security.html)\n- [SameSite Attacks](https://canitakeyoursubdomain.name/)\n- [SameSite Cookies](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie/SameSite)\n- [The great SameSite confusion](https://jub0bs.com/posts/2021-01-29-great-samesite-confusion/)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue or discussion in [codeigniter4/shield](https://github.com/codeigniter4/shield)\n* Email us at [security@codeigniter.com](mailto:security@codeigniter.com)\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "codeigniter4/shield"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.0.0-beta"
      }, {
        "fixed" : "1.0.0-beta.2"
      } ]
    } ],
    "versions" : [ "1.0.0-beta" ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/codeigniter4/shield/security/advisories/GHSA-5hm8-vh6r-2cjq"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-35943"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/codeigniter4/shield/commit/342a368536678621998c3c41d276480cd14ec6c6"
  }, {
    "type" : "WEB",
    "url" : "https://codeigniter4.github.io/userguide/libraries/security.htm"
  }, {
    "type" : "WEB",
    "url" : "https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie/SameSite"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/codeigniter4/shield"
  }, {
    "type" : "WEB",
    "url" : "https://jub0bs.com/posts/2021-01-29-great-samesite-confusion"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-08-18T19:03:34Z",
    "nvd_published_at" : "2022-08-12T21:15:00Z"
  }
}