CVE-2023-0325 in Uvdesk
Summary
by MITRE • 04/05/2023
Uvdesk version 1.1.1 allows an unauthenticated remote attacker to exploit a stored XSS in the application. This is possible because the application does not correctly validate the message sent by the clients in the ticket.
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Analysis
by VulDB Data Team • 07/12/2025
The vulnerability identified as CVE-2023-0325 affects Uvdesk version 1.1.1 and represents a critical stored cross-site scripting flaw that enables unauthenticated remote attackers to execute malicious scripts within the application context. This security weakness stems from insufficient input validation mechanisms that fail to properly sanitize user-supplied data when processing ticket messages. The vulnerability exists in the application's handling of client communications where message content is directly stored and subsequently rendered without adequate security controls.
The technical implementation of this flaw allows attackers to inject malicious javascript code through the ticket messaging system, which then gets executed whenever legitimate users view the affected tickets. This stored XSS vulnerability operates by bypassing the application's validation layers that should normally filter out potentially harmful input patterns. The vulnerability's impact is amplified by the fact that no authentication is required to exploit it, making it particularly dangerous as any remote user can potentially compromise the application's security posture. The flaw directly relates to CWE-79 which defines cross-site scripting vulnerabilities as the failure to properly validate or escape user-provided data before including it in dynamically generated web content.
From an operational perspective, this vulnerability creates significant risks for organizations using Uvdesk as their customer support platform. Attackers can leverage this flaw to steal session cookies, perform unauthorized actions on behalf of users, redirect victims to malicious websites, or extract sensitive information from the application. The stored nature of the vulnerability means that once exploited, the malicious payload persists and affects all users who view the compromised tickets, potentially leading to widespread compromise across the user base. The attack surface is particularly concerning given that support ticket systems often contain sensitive customer information, making this vulnerability a prime target for data exfiltration attacks.
The security implications extend beyond immediate exploitation as this vulnerability can serve as a foothold for more sophisticated attacks within the network. According to ATT&CK framework, this vulnerability maps to T1566 (Phishing) and T1059 (Command and Scripting Interpreter) where attackers can use the XSS to establish persistent access or escalate privileges. Organizations should immediately implement input validation controls, sanitize all user inputs, and consider implementing content security policies to mitigate the risk. The recommended remediation includes updating to a patched version of Uvdesk, implementing proper input sanitization, and conducting thorough security testing of all user-facing interfaces to prevent similar vulnerabilities in other components of the application stack.