Abstrium Pydio Cells User Creation resource injection

Overview

CVE-2023-2980 is a critical vulnerability found in Abstrium Pydio Cells version 4.2.0, specifically in the User Creation Handler component. The flaw leads to improper control of resource identifiers, allowing an attacker to manipulate identifiers during user creation. This vulnerability can be exploited remotely without authentication, making it highly dangerous for unpatched instances [1].

Exploitation

Attackers can initiate the exploit remotely by sending crafted requests to the User Creation Handler. The manipulation of resource identifiers may allow an attacker to create users with elevated privileges or access resources that should be restricted. The exploit has been publicly disclosed, increasing the risk of widespread use [1].

Impact

Successful exploitation could lead to unauthorized access to sensitive data, privilege escalation, and full compromise of the affected Pydio Cells instance. Given the collaborative nature of the platform, this could expose confidential files and user accounts [1].

Mitigation

The vendor addressed the vulnerability in version 4.2.1. Users are strongly advised to upgrade immediately. No workarounds are mentioned in the advisory [1]. The official GitHub repository for Pydio Cells indicates ongoing development, and affected users should follow upgrade instructions provided by the vendor [2].