Vulnerabilities

Pydio Core <= 8.2.5 is vulnerable to Cross Site Scripting (XSS) via the New URL Bookmark feature.

Pydio Cells allows users by default to create so-called external users in order to share files with them. By modifying the HTTP request sent when creating such an external user, it is possible to assign the new user arbitrary roles. By assigning all roles to a newly created user, access to all cells and non-personal workspaces is granted.

Directory traversal in the Copy, Move, and Delete features in Pydio Cells 2.2.9 allows remote authenticated users to enumerate personal files (or Cells files belonging to any user) via the nodes parameter (for Copy and Move) or via the Path parameter (for Delete).

The following vulnerability applies only to the Pydio Cells Enterprise OVF version 2.0.4. Prior versions of the Pydio Cells Enterprise OVF (such as version 2.0.3) have a looser policy restriction allowing the “pydio” user to execute any privileged command using sudo. In version 2.0.4 of the appliance, the user pydio is responsible for running all the services and binaries that are contained in the Pydio Cells web application package, such as mysqld, cells, among others. This user has privileges restricted to run those services and nothing more.

In Pydio Cells 2.0.4, once an authenticated user shares a file selecting the create a public link option, a hidden shared user account is created in the backend with a random username. An anonymous user that obtains a valid public link can get the associated hidden account username and password and proceed to login to the web application. Once logged into the web application with the hidden user account, some actions that were not available with the public share link can now be performed.

Pydio Cells 2.0.4 allows an authenticated user to write or overwrite existing files in another user’s personal and cells folders (repositories) by uploading a custom generated ZIP file and leveraging the file extraction feature present in the web application. The extracted files will be placed in the targeted user folders.

A problem was found in Pydio Core before 8.2.4 and Pydio Enterprise before 8.2.4. A PHP object injection is present in the page plugins/uploader.http/HttpDownload.php. An authenticated user with basic privileges can inject objects and achieve remote code execution.

Pydio 6.0.8 allows Authenticated SSRF during a Remote Link Feature download. An attacker can specify an intranet address in the file parameter to index.php, when sending a file to a remote server, as demonstrated by the file=http%3A%2F%2F192.168.1.2 substring.

Pydio Cells before 1.5.0 fails to neutralize '../' elements, allowing an attacker with minimum privilege to Upload files to, and Delete files/folders from, an unprivileged directory, leading to Privilege escalation.

An issue was discovered in proxy.php in pydio-core in Pydio through 8.2.2. Through an unauthenticated request, it possible to evaluate malicious PHP code by placing it on the fourth line of a .php file, as demonstrated by a PoC.php created by the guest account, with execution via a proxy.php?hash=../../../../../var/lib/pydio/data/personal/guest/PoC.php request. This is related to plugins/action.share/src/Store/ShareStore.php.

It is possible for an attacker with regular user access to the web application of Pydio through 8.2.2 to trick an administrator user into opening a link shared through the application, that in turn opens a shared file that contains JavaScript code (that is executed in the context of the victim user to obtain sensitive information such as session identifiers and perform actions on behalf of him/her).

In Pydio before 8.2.2, an attack is possible via PHP Object Injection because a user is allowed to use the $phpserial$a:0:{} syntax to store a preference. An attacker either needs a "public link" of a file, or access to any unprivileged user account for creation of such a link.

Pydio 4.2.1 through 8.2.1 has an authenticated remote code execution vulnerability in which an attacker with administrator access to the web application can execute arbitrary code on the underlying system via Command Injection.

Pydio version 8.2.1 and prior contains an Unvalidated user input leading to Remote Code Execution (RCE) vulnerability in plugins/action.antivirus/AntivirusScanner.php: Line 124, scanNow($nodeObject) that can result in An attacker gaining admin access and can then execute arbitrary commands on the underlying OS. This attack appear to be exploitable via The attacker edits the Antivirus Command in the antivirus plugin, and executes the payload by uploading any file within Pydio.