CVE-2021-30486 in SysAid
Summary
by MITRE • 07/22/2021
SysAid 20.3.64 b14 is affected by Blind and Stacker SQL injection via AssetManagementChart.jsp (GET computerID), AssetManagementChart.jsp (POST group1), AssetManagementList.jsp (GET computerID or group1), or AssetManagementSummary.jsp (GET group1).
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Analysis
by VulDB Data Team • 07/27/2021
The vulnerability CVE-2021-30486 affects SysAid version 20.3.64 b14 and represents a critical blind SQL injection flaw that can be exploited through multiple entry points within the web application. This vulnerability resides in the AssetManagementChart.jsp component where GET parameters computerID and POST parameters group1 can be manipulated to inject malicious SQL code. Additionally, the vulnerability extends to AssetManagementList.jsp through GET parameters computerID or group1, and AssetManagementSummary.jsp through GET parameter group1, creating multiple attack vectors that an adversary can leverage to compromise the system. The flaw stems from inadequate input validation and sanitization within the application's data handling mechanisms, allowing attackers to execute arbitrary SQL commands against the underlying database without proper authentication or authorization.
The technical implementation of this vulnerability demonstrates a classic blind SQL injection attack pattern where the attacker cannot directly see the database results but can infer information through response timing variations or conditional responses. This type of injection occurs when user-supplied data is directly concatenated into SQL queries without proper parameterization or escaping mechanisms. The vulnerability is classified under CWE-89 which specifically addresses SQL injection flaws, and it aligns with ATT&CK technique T1190 - Exploit Public-Facing Application, as it targets web interfaces exposed to external networks. The attack vector operates through the web application's HTTP request handling where unfiltered input parameters are processed by the database engine, enabling attackers to manipulate the execution flow of SQL queries.
The operational impact of this vulnerability is severe and multifaceted, potentially allowing attackers to extract sensitive data including user credentials, system configurations, and business-critical information stored in the database. An attacker could escalate privileges, modify or delete data, and potentially establish persistent backdoors within the system. The blind nature of the injection means that attackers can perform reconnaissance and data extraction over time, making detection more challenging for security teams. Organizations using SysAid may face compliance violations, data breaches, and significant financial losses due to the potential for unauthorized access to corporate assets. The vulnerability affects the integrity and confidentiality of the entire system, as it allows attackers to bypass traditional authentication mechanisms and directly interact with the database layer.
Mitigation strategies should focus on implementing proper input validation, parameterized queries, and output encoding to prevent SQL injection attacks. Organizations should immediately apply the vendor's security patches and updates as soon as they become available, while also implementing web application firewalls to monitor and filter suspicious requests. Network segmentation and access controls should be strengthened to limit exposure of vulnerable components. Security teams should conduct thorough code reviews and penetration testing to identify similar vulnerabilities in other applications and components. The implementation of principle of least privilege access controls and regular database audits can help reduce the potential impact if exploitation occurs. Additionally, organizations should establish robust monitoring and alerting mechanisms to detect anomalous database access patterns that may indicate exploitation attempts. Regular security awareness training for developers and system administrators can help prevent similar vulnerabilities from being introduced in future software versions.