Vulnerability in blossom-editor Blossom

[ Description ]Official description

Blossom through 1.17.1 contains an authorization bypass vulnerability that allows authenticated users to access other users' folders because FolderService queries filter only on folder id. Attackers can supply another user's folder id to /folder/info, /folder/upd, /folder/open or /folder/del to read storage paths, rename, toggle visibility, or delete folders.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/blossom-editor/blossom
• github.com/blossom-editor/blossom/blob/v1.17.1/blossom-backend/backend/src/main/java/co…
• github.com/blossom-editor/blossom/blob/v1.17.1/blossom-backend/backend/src/main/resourc…
• github.com/blossom-editor/blossom/issues/213
• hackmd.io/@hieuPenguinnn/blossom-folder-idor-cross-user-modify-delete
• www.vulncheck.com/advisories/blossom-through-1.17.1-authorization-bypass-via-folder-end…