CVE-2023-33706 in SysAid
Summary
by MITRE • 11/24/2023
SysAid before 23.2.15 allows Indirect Object Reference (IDOR) attacks to read ticket data via a modified sid parameter to EmailHtmlSourceIframe.jsp or a modified srID parameter to ShowMessage.jsp.
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Analysis
by VulDB Data Team • 01/06/2026
The vulnerability identified as CVE-2023-33706 represents a critical Indirect Object Reference flaw affecting SysAid versions prior to 23.2.15. This security weakness allows unauthorized users to access sensitive ticket data through manipulation of specific parameters within the web application's interface. The vulnerability manifests in two distinct attack vectors through the EmailHtmlSourceIframe.jsp and ShowMessage.jsp endpoints, where attackers can exploit parameter manipulation to gain unauthorized access to ticket information.
The technical nature of this vulnerability aligns with CWE-639, which specifically addresses Insufficient Authorization in web applications. The flaw occurs when the application fails to properly validate user permissions before processing requests that reference objects through indirect references. In this case, the sid parameter in EmailHtmlSourceIframe.jsp and the srID parameter in ShowMessage.jsp serve as the attack vectors where malicious users can modify these parameters to access ticket data belonging to other users. This represents a fundamental breakdown in the application's access control mechanisms, as the system does not adequately verify whether the authenticated user has legitimate authorization to view the requested ticket information.
The operational impact of this vulnerability is severe and multifaceted across multiple threat actor categories. From an adversary perspective, this IDOR vulnerability provides a straightforward path to information disclosure without requiring complex exploitation techniques. The attack can be executed through simple parameter manipulation, making it accessible to both skilled and less experienced threat actors. Organizations using affected SysAid versions face significant risks including unauthorized access to customer support tickets, potentially exposing sensitive personal information, business data, or proprietary communications. The vulnerability directly impacts the confidentiality pillar of the CIA triad and can be categorized under ATT&CK technique T1213.002 for Data from Information Repositories, representing a clear path for data exfiltration through legitimate application interfaces.
Mitigation strategies should focus on implementing robust input validation and access control mechanisms. Organizations must ensure that all parameters referencing objects through indirect references undergo proper authorization checks before processing user requests. The recommended remediation involves updating to SysAid version 23.2.15 or later, which includes proper authorization controls for ticket data access. Additionally, implementing proper parameter validation, session management, and access control checks for all endpoints that handle ticket-related data will prevent similar vulnerabilities from occurring in the future. Security teams should also consider implementing automated monitoring for unusual parameter manipulation patterns and establish proper privilege separation to minimize the impact of potential future vulnerabilities. The fix should incorporate proper authorization checks that validate user permissions against the requested resource before allowing data access, ensuring that the system enforces the principle of least privilege at all times.