mirror of
https://github.com/projectsend/projectsend.git
synced 2026-09-16 16:45:07 +00:00
ignacionelson
50f8b578df
Reported by @skeletonsec as GHSA-rxf8-wh8v-jm9j. A file in a public folder is public: isEffectivelyPublic() is "my own flag, or my folder's", read up the whole ancestry. GHSA-237r-jx85-j3hr settled that three days ago, put the rule in Folder::uploadableBy(), and wired it into the upload paths. Content arrives in a folder four other ways. move() drags one file in, bulkUpdate() moves a selection, update() reparents through the edit form, and FoldersController::move() drags a whole folder — every file in its subtree — under a public parent. Each of them asked whether the destination was *visible* to the mover and then wrote folder_id. Visible is not the same question as publishable, and the difference is the entire permission: a staff member given editing rights and deliberately not given upload_public could publish confidential files to the anonymous site by choosing where they landed. The API twin of update() had the same gap. Both earlier advisories named these paths in their own "suggested fix" sections. Neither demonstrated them, so neither was followed. The fix to a report wants the scrutiny the report got, and this one did not get it. The predicate did not need changing — it needed calling. Four sinks now ask it, plus the API twin. The check stays split in two deliberately: the destination is resolved through StaffLibraryScope as before, so a folder somebody cannot see is still a 404 and not an existence oracle, and the publication clause is a separate 403 on top. They agree by construction — allowsFolder() is folders()->whereKey()->exists() — so nothing that used to resolve can now fail the first half. On the file paths the check fires only when folder_id actually changes, which is the convention already there: re-saving a file that sits in a folder out of the saver's scope must keep working. bulkUpdate() checks its destination once instead, before the loop, because there is one destination for the batch and if it publishes then no file in the batch may go. Folder::uploadableBy()'s docblock now says to read the name as "may place into", with why: the name is what made this easy to miss, and the next folder_id or parent_id write will be written by somebody reading it. Ten tests, one per sink with a private-destination control beside it, plus an editor who *can* publish to show the boundary is about publishing and not about moving. The last one follows the advisory's own chain to the end and asserts the thing actually claimed — a stranger with no session, no token and no assignment fetching the anonymous download URL. It returns 200 on the code before this commit and 404 after. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CNFU55Tkq6MuEQ73nbbBRx