Vulnerability in zyx0814 FilePress

[ Description ]Official description

FilePress through 3.0.1 contains a missing authorization vulnerability in dzz/pichome/library that allows authenticated users to manage other libraries' folders because checkuserperm_by_uid only checks membership of any library. Attackers who know another library's appid or folder id can invoke folder.php operations like deletefolder and rename, or rightdata.php getfolderdata, to delete, modify, or read foreign 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/zyx0814/FilePress
• github.com/zyx0814/FilePress/blob/3.0.1/core/class/table/table_pichome_vappmember.php
• github.com/zyx0814/FilePress/blob/3.0.1/dzz/pichome/library.php
• github.com/zyx0814/FilePress/blob/3.0.1/dzz/pichome/library/folder.php
• github.com/zyx0814/FilePress/blob/3.0.1/dzz/pichome/library/rightdata.php
• github.com/zyx0814/FilePress/issues/76
• hackmd.io/@hieuPenguinnn/filepress-pichome-library-missing-per-library-authorization-idor
• www.vulncheck.com/advisories/filepress-through-3.0.1-missing-authorization-in-pichome-l…