CVE-2018-1000080 in ajenti
Summary
by MITRE
Ajenti version version 2 contains a Insecure Permissions vulnerability in Plugins download that can result in The download of any plugins as being a normal user. This attack appear to be exploitable via By knowing how the requisition is made, and sending it as a normal user, the server, in response, downloads the plugin.
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Analysis
by VulDB Data Team • 01/13/2020
The vulnerability identified as CVE-2018-1000080 affects Ajenti version 2 and represents a critical insecure permissions flaw within the plugin download functionality. This weakness stems from inadequate access control mechanisms that fail to properly validate user privileges during plugin acquisition requests. The vulnerability allows unauthenticated or low-privilege users to exploit the system by crafting specific requests that would normally require elevated permissions to execute successfully.
The technical implementation of this vulnerability resides in the server-side plugin download handler which does not properly verify whether the requesting user possesses the necessary authorization levels to access specific plugin resources. When a user submits a plugin download request, the system fails to validate the request against proper authentication and authorization protocols, effectively allowing any user to retrieve plugins that should be restricted to administrators or authorized personnel only. This represents a classic example of insufficient access control as defined by CWE-284, where improper permissions lead to unauthorized access to system resources.
From an operational perspective, this vulnerability creates significant security implications for Ajenti deployments as it enables arbitrary plugin downloads that could potentially include malicious code or sensitive components. Attackers can exploit this weakness by analyzing the request patterns and crafting their own requests to download plugins that contain backdoors, malware, or other harmful components. The impact extends beyond simple unauthorized access to include potential privilege escalation and system compromise, as plugins often have extensive system-level capabilities and can execute with elevated privileges. This vulnerability aligns with ATT&CK technique T1068 which involves exploiting legitimate credentials and access to gain system privileges.
The exploitation of this vulnerability demonstrates the importance of proper input validation and access control enforcement within web applications. Security practitioners should note that this issue highlights the critical need for implementing robust authentication checks at every point of resource access, particularly in administrative functions. Organizations using Ajenti version 2 should immediately implement mitigations including proper access control enforcement, request validation, and monitoring of plugin download activities. The vulnerability serves as a reminder of the fundamental principle that all user requests should be validated against appropriate authorization levels regardless of the initial request source or apparent legitimacy.