Description
LogChimp 0.9.0-alpha.1 before 0.9.3 contains an authorization bypass vulnerability that allows authenticated post authors to modify any other post by supplying mismatched postId and id body parameters. Attackers can set postId to their own post and id to an enumerated victim post UUID to overwrite its title, slug, content, boardId and roadmap_id.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| logchimp | logchimp | 0.9.0-alpha.1 – < 0.9.3 | 0.9.3 |
References
- Patch Commit patch
- https://github.com/logchimp/logchimp product
- https://github.com/logchimp/logchimp/blob/v0.9.2/packages/server/src/controllers/post/updatePost.ts#L67 technical-description
- https://github.com/logchimp/logchimp/blob/v0.9.2/packages/server/src/middlewares/postExists.ts#L72-L77 technical-description
- logchimp v0.9.3 Release Notes technical-description release-notes
- VulnCheck Advisory: LogChimp before 0.9.3 Authorization Bypass via PATCH /api/v1/posts third-party-advisory