CVE-2024-28199: Phlex Cross-Site Scripting Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-242p-4v39-2v8g",
  "modified" : "2024-03-14T21:40:41Z",
  "published" : "2024-03-12T15:39:46Z",
  "aliases" : [ "CVE-2024-28199" ],
  "summary" : "Cross-site Scripting (XSS) possible with maliciously formed HTML attribute names and values in Phlex",
  "details" : "There is a potential cross-site scripting (XSS) vulnerability that can be exploited via maliciously crafted user data. This was due to improper case-sensitivity in the code that was meant to prevent these attacks.\n\n### Impact\n\nIf you render an `<a>` tag with an `href` attribute set to a user-provided link, that link could potentially execute JavaScript when clicked by another user.\n\n```ruby\na(href: user_profile) { \"Profile\" }\n```\n\nIf you splat user-provided attributes when rendering any HTML or SVG tag, malicious event attributes could be included in the output, executing JavaScript when the events are triggered by another user.\n\n```ruby\nh1(**JSON.parse(user_attributes))\n```\n\n### Patches\nPatches are [available on RubyGems](https://rubygems.org/gems/phlex) for all `1.x` minor versions. The patched versions are:\n\n- [1.9.1](https://rubygems.org/gems/phlex/versions/1.9.1)\n- [1.8.2](https://rubygems.org/gems/phlex/versions/1.8.2)\n- [1.7.1](https://rubygems.org/gems/phlex/versions/1.7.1)\n- [1.6.2](https://rubygems.org/gems/phlex/versions/1.6.2)\n- [1.5.2](https://rubygems.org/gems/phlex/versions/1.5.2)\n- [1.4.1](https://rubygems.org/gems/phlex/versions/1.4.1)\n- [1.3.3](https://rubygems.org/gems/phlex/versions/1.3.3)\n- [1.2.2](https://rubygems.org/gems/phlex/versions/1.2.2)\n- [1.1.1](https://rubygems.org/gems/phlex/versions/1.1.1)\n- [1.0.1](https://rubygems.org/gems/phlex/versions/1.0.1)\n\nIf you are on `main`, it has been patched since [`aa50c60`](https://github.com/phlex-ruby/phlex/commit/aa50c604cdee1d0ce7ef068a4c66cbd5d43f96a1)\n\n### Workarounds\nConfiguring a [Content Security Policy](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy) that does not allow [`unsafe-inline`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy#unsafe-inline) would effectively prevent this vulnerability from being exploited.\n\n### References\n\nIn addition to upgrading to a patched version of Phlex, we strongly recommend configuring a Content Security Policy header that does not allow `unsafe-inline`. Here’s how you can configure a Content Security Policy header in Rails. https://guides.rubyonrails.org/security.html#content-security-policy-header",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "phlex"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.9.0"
      }, {
        "fixed" : "1.9.1"
      } ]
    } ],
    "versions" : [ "1.9.0" ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "phlex"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.8.0"
      }, {
        "fixed" : "1.8.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "phlex"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.7.0"
      }, {
        "fixed" : "1.7.1"
      } ]
    } ],
    "versions" : [ "1.7.0" ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "phlex"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.6.0"
      }, {
        "fixed" : "1.6.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "phlex"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.5.0"
      }, {
        "fixed" : "1.5.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "phlex"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.4.0"
      }, {
        "fixed" : "1.4.1"
      } ]
    } ],
    "versions" : [ "1.4.0" ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "phlex"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.3.0"
      }, {
        "fixed" : "1.3.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "phlex"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.2.0"
      }, {
        "fixed" : "1.2.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "phlex"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.1.0"
      }, {
        "fixed" : "1.1.1"
      } ]
    } ],
    "versions" : [ "1.1.0" ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "phlex"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/phlex-ruby/phlex/security/advisories/GHSA-242p-4v39-2v8g"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-28199"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/phlex-ruby/phlex/commit/aa50c604cdee1d0ce7ef068a4c66cbd5d43f96a1"
  }, {
    "type" : "WEB",
    "url" : "https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy"
  }, {
    "type" : "WEB",
    "url" : "https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy#unsafe-inline"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/phlex-ruby/phlex"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/phlex/CVE-2024-28199.yml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-03-12T15:39:46Z",
    "nvd_published_at" : "2024-03-11T23:15:47Z"
  }
}