CVE-2022-32114
An unrestricted file upload vulnerability in the Add New Assets function of Strapi 4.1.12 allows attackers to conduct XSS attacks via a crafted PDF file.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.00%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An unrestricted file upload vulnerability in the Add New Assets function of Strapi 4.1.12 allows attackers to conduct XSS attacks via a crafted PDF file. NOTE: the project documentation suggests that a user with the Media Library "Create (upload)" permission is supposed to be able to upload PDF files containing JavaScript, and that all files in a public assets folder are accessible to the outside world (unless the filename begins with a dot character). The administrator can choose to allow only image, video, and audio files (i.e., not PDF) if desired.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.00% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-434
- Affected
- strapi/strapi
- Source
- cve@mitre.org
References
- https://docs.strapi.io/dev-docs/configurations/public-assets
- https://docs.strapi.io/user-docs/users-roles-permissions/configuring-administrator-roles
- https://github.com/bypazs/strapiProduct
- https://github.com/strapi/strapi/blob/d9277d616b4478a3839e79e47330a4aaf167a2f1/packages/core/content-type-builder/admin/src/components/AllowedTypesSelect/index.js#L14
- https://github.com/strapi/strapi/blob/d9277d616b4478a3839e79e47330a4aaf167a2f1/packages/core/upload/admin/src/components/MediaLibraryInput/index.js#L33
- https://grimthereaperteam.medium.com/strapi-v4-1-12-unrestricted-file-upload-b993bfd07e4eExploit, Third Party Advisory
- https://docs.strapi.io/dev-docs/configurations/public-assets
- https://docs.strapi.io/user-docs/users-roles-permissions/configuring-administrator-roles
- https://github.com/bypazs/strapiProduct
- https://github.com/strapi/strapi/blob/d9277d616b4478a3839e79e47330a4aaf167a2f1/packages/core/content-type-builder/admin/src/components/AllowedTypesSelect/index.js#L14
- https://github.com/strapi/strapi/blob/d9277d616b4478a3839e79e47330a4aaf167a2f1/packages/core/upload/admin/src/components/MediaLibraryInput/index.js#L33
- https://grimthereaperteam.medium.com/strapi-v4-1-12-unrestricted-file-upload-b993bfd07e4eExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.