CVE-2020-35594 in ADManager Plus
Summary
by MITRE • 03/06/2021
Zoho ManageEngine ADManager Plus before 7066 allows XSS.
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Analysis
by VulDB Data Team • 03/28/2021
The vulnerability identified as CVE-2020-35594 affects Zoho ManageEngine ADManager Plus version 7066 and earlier, representing a cross-site scripting flaw that exposes users to potential security risks. This issue resides within the web application interface of the ADManager Plus platform, which is designed for active directory management and administrative tasks. The vulnerability enables malicious actors to inject malicious scripts into web pages viewed by other users, potentially compromising the security posture of organizations relying on this tool for directory services management.
The technical flaw manifests through insufficient input validation and output encoding mechanisms within the ADManager Plus application. When users interact with certain web interfaces or submit data through forms, the application fails to properly sanitize user-supplied input before rendering it in web responses. This weakness creates an environment where attackers can craft malicious payloads containing script code that executes in the context of other users' browsers. The vulnerability specifically impacts the application's handling of user-provided data in web forms, search queries, and parameter inputs, making it particularly dangerous in administrative environments where privileged users interact with the system.
The operational impact of this XSS vulnerability extends beyond simple script execution, potentially enabling attackers to escalate privileges, steal session cookies, perform unauthorized actions on behalf of users, and access sensitive organizational data. In the context of ADManager Plus, which handles critical active directory information and administrative functions, successful exploitation could lead to complete compromise of directory services, unauthorized access to user accounts, and potential lateral movement within the network. The vulnerability affects all users who interact with the web interface, particularly administrators who may have elevated privileges and access to sensitive information.
Organizations utilizing Zoho ManageEngine ADManager Plus should immediately apply the vendor-provided patch or upgrade to version 7066 or later to remediate this vulnerability. The mitigation strategy involves implementing proper input validation and output encoding mechanisms throughout the application, following secure coding practices that prevent script injection attacks. Additionally, implementing content security policies and monitoring for suspicious user activities can provide additional layers of defense. This vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws in web applications, and represents a common attack vector that aligns with ATT&CK technique T1566.001 for initial access through malicious web content. Organizations should also consider implementing web application firewalls and regular security assessments to detect and prevent similar vulnerabilities in their infrastructure.