CVE-2020-15927 in Applications Manager
Summary
by MITRE • 10/06/2020
Zoho ManageEngine Applications Manager version 14740 and prior allows an authenticated SQL Injection via a crafted jsp request in the SAP module.
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Analysis
by VulDB Data Team • 11/17/2020
The vulnerability CVE-2020-15927 represents a critical SQL injection flaw within Zoho ManageEngine Applications Manager up to version 14740, specifically affecting the SAP module functionality. This vulnerability arises from inadequate input validation and sanitization within the web application's processing of jsp requests, creating a pathway for malicious actors to execute arbitrary SQL commands against the underlying database system. The flaw exists in the authentication context, meaning that an attacker must first establish valid credentials to exploit this vulnerability, though the impact remains severe once achieved.
The technical implementation of this vulnerability stems from improper parameter handling within the SAP module's jsp request processing logic. When legitimate users submit requests containing specially crafted input parameters, the application fails to properly escape or validate these inputs before incorporating them into SQL query constructions. This allows attackers to inject malicious SQL syntax that bypasses normal authentication checks and directly manipulates the database backend. The vulnerability specifically targets the SAP module, indicating that the flaw exists within a particular subsystem rather than affecting the entire application framework. According to CWE standards, this maps directly to CWE-89 SQL Injection, which is classified as a high-risk vulnerability due to its potential for data compromise, unauthorized access, and system manipulation.
The operational impact of this vulnerability extends beyond simple data theft, as it enables attackers to perform complete database manipulation including data exfiltration, modification of critical system information, and potential privilege escalation. An authenticated attacker could leverage this vulnerability to extract sensitive information such as user credentials, system configurations, and business-critical data stored within the SAP module's database. The attack surface is particularly concerning because it affects a monitoring and management platform that typically holds extensive access to enterprise systems, potentially allowing lateral movement within the network and further compromise of connected systems. This vulnerability aligns with ATT&CK technique T1071.004 Application Layer Protocol: DNS, as the attack may involve manipulation of database queries that could be used to establish command and control channels or exfiltrate data through network protocols.
Mitigation strategies for CVE-2020-15927 should prioritize immediate patching of affected Zoho ManageEngine Applications Manager installations to version 14741 or later, which contains the necessary security fixes. Organizations should implement robust input validation and parameterized query approaches throughout the application codebase, particularly within modules handling external inputs. Network segmentation and access controls should be strengthened to limit the potential impact of successful exploitation, while monitoring systems should be configured to detect anomalous database query patterns that may indicate exploitation attempts. Security teams should conduct comprehensive vulnerability assessments of similar applications within their environment to identify potential analogous flaws, and implement regular security testing including dynamic application security testing and manual penetration testing to ensure robust protection against SQL injection attacks.