GHSA-W542-CPP9-R3G7

Vulnerability from github – Published: 2020-08-05 14:53 – Updated: 2023-07-05 20:19
VLAI?
Summary
Field Test CSRF vulnerability
Details

The Field Test dashboard is vulnerable to cross-site request forgery (CSRF) with non-session based authentication methods in versions v0.2.0 through v0.3.2.

Impact

The Field Test dashboard is vulnerable to CSRF with non-session based authentication methods, like basic authentication. Session-based authentication methods (like Devise's default authentication) are not affected.

A CSRF attack works by getting an authorized user to visit a malicious website and then performing requests on behalf of the user. In this instance, a single endpoint is affected, which allows for changing the variant assigned to a user.

All users running an affected release should upgrade immediately.

Technical Details

Field Test uses the protect_from_forgery method from Rails to prevent CSRF. However, this defaults to :null_session, which has no effect on non-session based authentication methods. This has been changed to protect_from_forgery with: :exception.

Severity ?
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.3.2"
      },
      "package": {
        "ecosystem": "RubyGems",
        "name": "field_test"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.2.0"
            },
            {
              "fixed": "0.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-16252"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-352"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-08-05T14:47:06Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "The Field Test dashboard is vulnerable to cross-site request forgery (CSRF) with non-session based authentication methods in versions v0.2.0 through v0.3.2.\n\n## Impact\nThe Field Test dashboard is vulnerable to CSRF with non-session based authentication methods, like basic authentication. Session-based authentication methods (like Devise\u0027s default authentication) are not affected.\n\nA CSRF attack works by getting an authorized user to visit a malicious website and then performing requests on behalf of the user. In this instance, a single endpoint is affected, which allows for changing the variant assigned to a user.\n\nAll users running an affected release should upgrade immediately.\n\n## Technical Details\nField Test uses the `protect_from_forgery` method from Rails to prevent CSRF. However, this defaults to `:null_session`, which has no effect on non-session based authentication methods. This has been changed to `protect_from_forgery with: :exception`.",
  "id": "GHSA-w542-cpp9-r3g7",
  "modified": "2023-07-05T20:19:49Z",
  "published": "2020-08-05T14:53:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-16252"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ankane/field_test/issues/28"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ankane/field_test/commit/defd3fdf457c22d7dc5b3be7048481947bd5f0d0"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ankane/field_test"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/field_test/CVE-2020-16252.yml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Field Test CSRF vulnerability"
}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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