CVE-2015-7387 in EventLog Analyzer
Summary
by MITRE
ZOHO ManageEngine EventLog Analyzer 10.6 build 10060 and earlier allows remote attackers to bypass intended restrictions and execute arbitrary SQL commands via an allowed query followed by a disallowed one in the query parameter to event/runQuery.do, as demonstrated by "SELECT 1;INSERT INTO."
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Analysis
by VulDB Data Team • 12/29/2024
The vulnerability CVE-2015-7387 represents a critical SQL injection flaw in ZOHO ManageEngine EventLog Analyzer version 10.6 build 10060 and earlier. This vulnerability exists within the application's query processing mechanism at the event/runQuery.do endpoint, where the system fails to properly sanitize user input before executing database operations. The flaw allows attackers to craft malicious SQL commands by concatenating an allowed query with a disallowed one, effectively bypassing the intended access controls and authorization mechanisms that should prevent unauthorized database manipulation.
The technical implementation of this vulnerability stems from improper input validation and sanitization within the application's SQL query execution pipeline. When users submit queries through the runQuery.do endpoint, the system does not adequately filter or escape special characters that could be used to inject additional SQL commands. The vulnerability specifically exploits the fact that the application processes multiple SQL statements within a single request, allowing attackers to append malicious commands after legitimate ones. This type of vulnerability is classified as CWE-89 SQL Injection according to the Common Weakness Enumeration standard, which specifically addresses the improper handling of SQL command structures in applications.
The operational impact of this vulnerability is severe and multifaceted. Remote attackers can leverage this flaw to execute arbitrary SQL commands on the underlying database system, potentially gaining unauthorized access to sensitive data, modifying or deleting critical information, and even escalating privileges within the database environment. The demonstrated attack vector using "SELECT 1;INSERT INTO" illustrates how attackers can combine benign queries with malicious ones to perform unauthorized database operations without proper authentication. This vulnerability directly maps to the ATT&CK technique T1071.004 Application Layer Protocol: Structured Query Language, where adversaries use SQL injection to manipulate database systems.
Organizations utilizing affected versions of ManageEngine EventLog Analyzer face significant security risks including data breaches, unauthorized system access, and potential compromise of the entire database infrastructure. The vulnerability's remote exploitability means that attackers do not require physical access or local network presence to carry out attacks, making it particularly dangerous in environments where the application is exposed to untrusted networks. The bypass of intended restrictions demonstrates a fundamental flaw in the application's security architecture, potentially affecting not just database integrity but also the overall security posture of systems relying on this logging and monitoring solution.
Mitigation strategies for CVE-2015-7387 should include immediate patching of the affected software to the latest version where the vulnerability has been addressed. Organizations should also implement network segmentation to limit access to the EventLog Analyzer application, deploy web application firewalls to monitor and filter suspicious SQL injection attempts, and conduct thorough input validation at multiple layers of the application architecture. Additionally, implementing proper database access controls, regularly monitoring database logs for unusual activity, and establishing secure coding practices for future development can help prevent similar vulnerabilities from emerging in other applications within the organization's infrastructure.