CVE-2022-31398 in Helpdeskz
Summary
by MITRE • 06/13/2022
A cross-site scripting (XSS) vulnerability in /staff/tools/custom-fields of Helpdeskz v2.0.2 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the email name field.
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Analysis
by VulDB Data Team • 06/17/2022
The vulnerability identified as CVE-2022-31398 represents a critical cross-site scripting flaw within the Helpdeskz v2.0.2 ticketing system that resides in the staff tools custom fields component. This vulnerability specifically affects the email name field input validation mechanism, creating an avenue for malicious actors to inject and execute arbitrary web scripts or HTML content within the application's interface. The flaw exists in the server-side input sanitization process where user-provided data fails to undergo proper validation and escaping before being rendered back to authenticated users within the staff administrative panel.
The technical exploitation of this vulnerability follows a standard XSS attack pattern where an attacker crafts a malicious payload containing script code within the email name field during custom field creation or modification processes. When the vulnerable application displays this crafted input without proper HTML escaping or sanitization, the injected scripts execute within the context of other authenticated users' browsers who view the affected custom field data. This creates a persistent XSS vector that can be leveraged to steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users with the privileges of the affected account.
The operational impact of CVE-2022-31398 extends beyond simple script execution as it compromises the integrity of the Helpdeskz application's administrative interface. Attackers can manipulate the custom fields functionality to inject malicious scripts that persist across multiple user sessions, potentially leading to complete administrative account compromise. The vulnerability affects the application's security model by undermining the trust boundary between legitimate users and the system, as authenticated staff members may unknowingly execute malicious code when viewing custom field data. This risk is exacerbated by the fact that the vulnerability exists in a staff tool component, meaning that successful exploitation could provide attackers with access to sensitive customer data, ticket management capabilities, and system configuration options.
Organizations utilizing Helpdeskz v2.0.2 should implement immediate mitigations including input validation and output escaping mechanisms for all user-supplied data within the custom fields functionality. The recommended approach involves implementing proper HTML entity encoding for all dynamic content rendered in the staff interface, particularly within fields that accept user input such as email names. Additionally, implementing Content Security Policy headers can provide an additional layer of protection against script execution, though this should not be considered a replacement for proper input validation. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in web applications, and follows ATT&CK technique T1566.001 for initial access through malicious web content. Organizations should also consider implementing web application firewalls to detect and block suspicious payloads targeting this specific vulnerability while planning for a full application update to address the root cause. The vulnerability demonstrates a critical weakness in the application's security architecture that requires immediate remediation to prevent potential data breaches and unauthorized administrative access.