CVE-2018-20485 in ADSelfService Plus
Summary
by MITRE
Zoho ManageEngine ADSelfService Plus 5.7 before build 5702 has XSS in the employee search feature.
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Analysis
by VulDB Data Team • 08/31/2025
The vulnerability identified as CVE-2018-20485 affects Zoho ManageEngine ADSelfService Plus version 5.7 prior to build 5702, specifically within the employee search functionality. This represents a cross-site scripting vulnerability that allows remote attackers to inject malicious scripts into web applications. The flaw exists in the way the application processes user input during employee search operations, creating an avenue for attackers to execute arbitrary code in the context of a victim's browser session.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding within the search feature. When users perform employee searches, the application fails to properly sanitize or escape user-supplied parameters before rendering them back to the browser. This weakness falls under CWE-79 which defines cross-site scripting as a common web application security flaw. Attackers can craft malicious payloads containing script tags or other executable code that gets stored and subsequently executed when other users view the search results or interact with the affected functionality.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to hijack user sessions, steal sensitive authentication tokens, or perform actions on behalf of authenticated users. In the context of ADSelfService Plus, which manages user authentication and self-service password reset capabilities, this vulnerability could allow unauthorized access to user accounts and potentially escalate privileges within the domain environment. The attack vector requires minimal user interaction since the malicious scripts execute automatically when search results are displayed, making it particularly dangerous in enterprise environments where multiple users interact with the system.
Security practitioners should implement immediate mitigations including input validation and output encoding for all user-supplied data within search functionalities. The recommended approach involves sanitizing all input parameters and applying proper HTML escaping before rendering any user-controllable content. Organizations should also consider implementing content security policies to limit script execution and monitor for suspicious search queries. This vulnerability aligns with ATT&CK technique T1213 which covers data from information repositories, and T1078 which addresses valid accounts, as it can be leveraged to gain unauthorized access to user credentials and system resources. The affected version should be updated to build 5702 or later, which contains the necessary patches to address the XSS vulnerability through improved input sanitization and output encoding mechanisms.