CVE-2024-37031: Activeadmin Cross-Site Scripting Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9mg6-x45v-hcfm",
  "modified" : "2024-10-28T12:37:00Z",
  "published" : "2024-06-02T22:32:24Z",
  "aliases" : [ "CVE-2024-37031" ],
  "summary" : "activeadmin vulnerable to stored persistent cross-site scripting (XSS) in dynamic form legends",
  "details" : "### Impact\n\nUsers settings their active admin form legends dynamically may be vulnerable to stored XSS, as long as its value can be injected directly by a malicious user.\n\nFor example:\n\n* A public web application allows users to create entities with arbitrary names.\n* Active Admin is used to administrate these entities through a private backend.\n* The form to edit these entities in the private backend has the following shape (note the dynamic `name` value dependent on an attribute of the `resource`):\n\n```ruby\n  form do |f|\n    f.inputs name: resource.name do\n      f.input :name\n      f.input :description\n    end\n\n    f.actions\n  end\n```\n\nThen a malicious user could create an entity with a payload that would get executed in the active admin administrator's browser.\n\nBoth `form` blocks with an implicit or explicit name (i.e., both `form resource.name` or `form name: resource.name` would suffer from the problem), where the value of the name can be arbitrarily set by non admin users.\n\n### Patches\n\nThe problem has been fixed in ActiveAdmin 3.2.2 and ActiveAdmin 4.0.0.beta7.\n\n### Workarounds\n\nUsers can workaround this problem without upgrading by explicitly escaping the form name using an HTML escaping utility. For example:\n\n```ruby\n  form do |f|\n    f.inputs name: ERB::Util.html_escape(resource.name) do\n      f.input :name\n      f.input :description\n    end\n\n    f.actions\n  end\n```\nUpgrading is of course recommended though.\n\n### References\nhttps://owasp.org/www-community/attacks/xss/#stored-xss-attacks",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "activeadmin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.2.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "activeadmin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0.beta1"
      }, {
        "fixed" : "4.0.0.beta7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/activeadmin/activeadmin/security/advisories/GHSA-9mg6-x45v-hcfm"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-37031"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/activeadmin/activeadmin/pull/8349"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/activeadmin/activeadmin"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/activeadmin/activeadmin/releases/tag/v3.2.2"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activeadmin/CVE-2024-37031.yml"
  }, {
    "type" : "WEB",
    "url" : "https://rubygems.org/gems/activeadmin/versions/3.2.2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-06-02T22:32:24Z",
    "nvd_published_at" : "2024-06-03T06:15:10Z"
  }
}