CVE-2020-13154 in Service Plus
Summary
by MITRE
Zoho ManageEngine Service Plus before 11.1 build 11112 allows low-privilege authenticated users to discover the File Protection password.
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Analysis
by VulDB Data Team • 05/19/2020
The vulnerability identified as CVE-2020-13154 affects Zoho ManageEngine Service Plus versions prior to 11.1 build 11112, representing a critical security flaw that undermines the authentication and authorization mechanisms of the platform. This issue specifically targets the file protection feature within the service management solution, which is designed to safeguard sensitive data through password-based access controls. The vulnerability enables attackers with low-privilege authenticated accounts to bypass intended security measures and extract the file protection password, thereby compromising the confidentiality and integrity of protected data within the system.
The technical exploitation of this vulnerability stems from inadequate input validation and insufficient access controls within the file protection subsystem. When authenticated users interact with the file protection functionality, the application fails to properly validate the user's privileges before exposing sensitive password information. This flaw operates at the application layer and represents a classic case of insufficient authorization checks, which aligns with CWE-285, specifically addressing improper authorization scenarios in software systems. The vulnerability essentially allows privilege escalation through information disclosure, where a user with minimal permissions can obtain credentials that should be restricted to higher-privilege administrators.
The operational impact of this vulnerability extends beyond simple information disclosure, as it fundamentally compromises the security posture of organizations relying on Zoho ManageEngine Service Plus for their service management needs. Once an attacker obtains the file protection password, they can access and potentially modify protected files, leading to data breaches, unauthorized system changes, and potential lateral movement within the network. This vulnerability particularly affects organizations that store sensitive operational data, customer information, or proprietary business documents within the service management platform. The attack vector is relatively straightforward since it only requires a low-privilege account, making it accessible to both internal threat actors and external attackers who may have obtained such credentials through phishing, credential stuffing, or other initial access techniques.
Organizations utilizing affected versions of Zoho ManageEngine Service Plus should immediately implement mitigations to address this vulnerability. The primary recommendation involves upgrading to version 11.1 build 11112 or later, which contains the necessary patches to prevent unauthorized password disclosure. Additionally, administrators should conduct comprehensive access reviews to ensure that only authorized personnel maintain low-privilege accounts, and implement network segmentation to limit the potential impact of credential compromise. From an ATT&CK framework perspective, this vulnerability maps to technique T1078.004, which covers valid accounts with restricted permissions, and T1566.001, representing spearphishing with malicious attachments that could lead to initial access. The vulnerability also demonstrates characteristics of T1213.002, information access via file and directory permissions, highlighting the importance of proper access control implementation. Security teams should also consider implementing monitoring for unusual authentication patterns and unauthorized access attempts to detect potential exploitation of this vulnerability in their environments.