{"id":"GHSA-vfmv-jfc5-pjjw","summary":"CarrierWave content-Type allowlist bypass vulnerability which possibly leads to XSS remained","details":"### Impact\nThe vulnerability [CVE-2023-49090](https://github.com/carrierwaveuploader/carrierwave/security/advisories/GHSA-gxhx-g4fq-49hj) wasn't fully addressed.\n\nThis vulnerability is caused by the fact that when uploading to object storage, including Amazon S3, it is possible to set a Content-Type value that is interpreted by browsers to be different from what's allowed by `content_type_allowlist`, by providing multiple values separated by commas.\n\nThis bypassed value can be used to cause XSS.\n\n### Patches\nUpgrade to [3.0.7](https://rubygems.org/gems/carrierwave/versions/3.0.7) or [2.2.6](https://rubygems.org/gems/carrierwave/versions/2.2.6).\n\n### Workarounds\nUse the following monkey patch to let CarrierWave parse the Content-type by using `Marcel::MimeType.for`.\n\n```ruby\n# For CarrierWave 3.x\nCarrierWave::SanitizedFile.class_eval do\n  def declared_content_type\n    @declared_content_type ||\n      if @file.respond_to?(:content_type) && @file.content_type\n        Marcel::MimeType.for(declared_type: @file.content_type.to_s.chomp)\n      end\n  end\nend\n```\n\n```ruby\n# For CarrierWave 2.x\nCarrierWave::SanitizedFile.class_eval do\n  def existing_content_type\n    if @file.respond_to?(:content_type) && @file.content_type\n      Marcel::MimeType.for(declared_type: @file.content_type.to_s.chomp)\n    end\n  end\nend\n```\n\n### References\n[OWASP - File Upload Cheat Sheet](https://cheatsheetseries.owasp.org/cheatsheets/File_Upload_Cheat_Sheet.html#content-type-validation)\n\n","aliases":["CVE-2024-29034"],"modified":"2024-03-27T13:00:01Z","published":"2024-03-25T19:40:36Z","database_specific":{"cwe_ids":["CWE-436","CWE-79"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2024-03-25T19:40:36Z","nvd_published_at":"2024-03-24T20:15:07Z"},"references":[{"type":"WEB","url":"https://github.com/carrierwaveuploader/carrierwave/security/advisories/GHSA-vfmv-jfc5-pjjw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-29034"},{"type":"WEB","url":"https://github.com/carrierwaveuploader/carrierwave/commit/25b1c800d45ef8e78dc445ebe3bd8a6e3f0a3477"},{"type":"PACKAGE","url":"https://github.com/carrierwaveuploader/carrierwave"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/carrierwave/CVE-2024-29034.yml"}],"affected":[{"package":{"name":"carrierwave","ecosystem":"RubyGems","purl":"pkg:gem/carrierwave"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.0.7"}]}],"versions":["3.0.0","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-vfmv-jfc5-pjjw/GHSA-vfmv-jfc5-pjjw.json"}},{"package":{"name":"carrierwave","ecosystem":"RubyGems","purl":"pkg:gem/carrierwave"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.6"}]}],"versions":["0.1","0.10.0","0.11.0","0.11.1","0.11.2","0.2.0","0.2.1","0.2.3","0.2.4","0.3.0","0.3.1","0.3.2","0.3.3","0.3.4","0.3.5","0.3.5.1","0.3.5.2","0.4.0","0.4.1","0.4.10","0.4.2","0.4.3","0.4.4","0.4.5","0.4.6","0.4.7","0.4.8","0.4.9","0.5.0","0.5.0.beta2","0.5.1","0.5.2","0.5.3","0.5.4","0.5.5","0.5.6","0.5.7","0.5.8","0.6.0","0.6.1","0.6.2","0.7.0","0.7.1","0.8.0","0.9.0","1.0.0","1.0.0.beta","1.0.0.rc","1.1.0","1.2.0","1.2.1","1.2.2","1.2.3","1.3.0","1.3.1","1.3.2","1.3.3","1.3.4","2.0.0","2.0.0.rc","2.0.1","2.0.2","2.1.0","2.1.1","2.2.0","2.2.1","2.2.2","2.2.3","2.2.4","2.2.5"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-vfmv-jfc5-pjjw/GHSA-vfmv-jfc5-pjjw.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N"}]}