CVE-2018-10076 in EventLog Analyzer
Summary
by MITRE
An issue was discovered in Zoho ManageEngine EventLog Analyzer 11.12. A Cross-Site Scripting vulnerability allows a remote attacker to inject arbitrary web script or HTML via the search functionality (the search box of the Dashboard).
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Analysis
by VulDB Data Team • 03/25/2020
The vulnerability identified as CVE-2018-10076 represents a critical cross-site scripting flaw within Zoho ManageEngine EventLog Analyzer version 11.12. This security weakness resides in the application's dashboard search functionality, specifically in the search box implementation that fails to properly sanitize user input before processing and displaying it back to users. The flaw enables remote attackers to execute malicious scripts within the context of other users' browsers, potentially compromising the confidentiality, integrity, and availability of the system. The vulnerability stems from inadequate input validation and output encoding mechanisms that should have prevented malicious payloads from being executed when users interact with the search feature.
The technical exploitation of this vulnerability occurs when an attacker submits malicious script code through the search box on the EventLog Analyzer dashboard. When the application processes this input without proper sanitization, the malicious code gets stored and subsequently executed whenever other users view the search results or interact with the affected interface. This type of vulnerability falls under CWE-79 - Improper Neutralization of Input During Web Page Generation, which specifically addresses the failure to properly encode or escape user-controllable data before including it in web page output. The attack vector is classified as network-based since no local access is required, and the impact can be severe as attackers can potentially steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to malicious websites.
The operational impact of CVE-2018-10076 extends beyond simple script execution, as it can lead to complete session hijacking and privilege escalation within the EventLog Analyzer environment. Attackers could leverage this vulnerability to gain unauthorized access to sensitive log data, modify system configurations, or even establish persistent backdoors within the organization's security infrastructure. The EventLog Analyzer serves as a critical component for monitoring and analyzing security events across enterprise networks, making this vulnerability particularly dangerous as it could compromise the integrity of the entire security monitoring ecosystem. Organizations using this software face potential data breaches, compliance violations, and significant operational disruption when this vulnerability is exploited.
Mitigation strategies for CVE-2018-10076 should include immediate patch application from Zoho ManageEngine, which would address the root cause by implementing proper input validation and output encoding mechanisms. Organizations should also implement additional security controls such as web application firewalls that can detect and block malicious script payloads in real-time. Network segmentation and access controls should be reviewed to limit the potential impact of successful exploitation, while regular security assessments should be conducted to identify similar vulnerabilities in other applications. The ATT&CK framework categorizes this vulnerability under T1059 - Command and Scripting Interpreter and T1566 - Phishing, as attackers would typically use such vulnerabilities to establish initial access and then escalate privileges within the compromised environment. Regular security awareness training for administrators and users can help prevent social engineering attacks that might exploit this vulnerability by tricking users into submitting malicious search queries.