CVE-2021-3333 in Open-AudIT
Summary
by MITRE • 02/05/2021
Opmantek Open-AudIT 4.0.1 is affected by cross-site scripting (XSS). When outputting SQL statements for debugging, a maliciously crafted query can trigger an XSS attack. This attack only succeeds if the user is already logged in to Open-AudIT before they click the malicious link.
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Analysis
by VulDB Data Team • 02/24/2021
The vulnerability identified as CVE-2021-3333 affects Opmantek Open-AudIT version 4.0.1 and represents a cross-site scripting flaw that emerges during SQL statement debugging operations. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically manifesting as a reflected XSS attack vector. The security flaw occurs when the application outputs raw SQL statements to the user interface for debugging purposes without proper input sanitization or output encoding. The vulnerability requires a specific prerequisite condition where the victim must already be authenticated within the Open-AudIT application before clicking on a maliciously crafted link containing the XSS payload. This authentication requirement places the vulnerability in the context of a privilege escalation attack vector, as attackers must first establish a foothold through other means before exploiting this XSS weakness.
The technical exploitation of this vulnerability occurs through the application's debug output functionality where SQL queries are displayed to users who have administrative or privileged access. When a malicious actor crafts a specially formatted SQL query and injects it into the application's input fields, the resulting debug output contains the malicious script code which executes in the context of the victim's browser session. The attack leverages the fact that the application does not properly encode or sanitize the SQL output before rendering it to the user interface, allowing script code to be interpreted as executable content rather than plain text. This vulnerability demonstrates poor input validation and output encoding practices, which are fundamental security controls that should prevent such injection attacks from being successfully executed against the application's user interface.
From an operational impact perspective, this vulnerability poses a significant risk to organizations using Open-AudIT for network auditing and asset management. Since the attack requires an authenticated session, it limits the attack surface to users who already have access to the system, but this still represents a critical security weakness that could be exploited by insider threats or compromised accounts. The successful exploitation could allow attackers to steal session cookies, perform unauthorized actions within the application, or redirect users to malicious websites. The vulnerability directly impacts the principle of least privilege as it enables attackers with valid credentials to escalate their privileges or access sensitive data that the application handles during its auditing processes. This particular vulnerability also aligns with ATT&CK technique T1566.001 for initial access through malicious links, and T1071.004 for application layer protocol usage, as it exploits the application's legitimate functionality to deliver malicious payloads.
Organizations should implement immediate mitigations including input validation and output encoding controls to prevent SQL statement content from being rendered without proper sanitization. The application should be updated to version 4.0.2 or later where this vulnerability has been patched. Security measures should include disabling debug output in production environments, implementing proper content security policies, and conducting regular security testing to identify similar injection vulnerabilities. The mitigation strategy should also involve user education about clicking suspicious links and implementing multi-factor authentication to reduce the impact of credential compromise. Additionally, organizations should monitor for any unauthorized access attempts or unusual activities within their Open-AudIT environments, as this vulnerability could be part of a broader exploitation campaign targeting similar network auditing tools. The vulnerability demonstrates the importance of proper secure coding practices, particularly around input validation and output encoding, which are essential components of the OWASP Top Ten security framework and should be integrated into all application development lifecycle processes to prevent similar issues from occurring in the future.