CVE-2023-0265 in Uvdesk
Summary
by MITRE • 04/05/2023
Uvdesk version 1.1.1 allows an authenticated remote attacker to execute commands on the server. This is possible because the application does not properly validate profile pictures uploaded by customers.
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Analysis
by VulDB Data Team • 07/06/2025
The vulnerability identified as CVE-2023-0265 affects Uvdesk version 1.1.1 and represents a critical remote code execution flaw that can be exploited by authenticated attackers. This vulnerability stems from insufficient input validation mechanisms within the application's profile picture upload functionality, creating a pathway for malicious code execution on the underlying server infrastructure. The issue manifests when customers with valid accounts attempt to upload profile images without proper sanitization of file content or type checking, allowing attackers to bypass security controls that should prevent arbitrary file uploads.
From a technical perspective, this vulnerability aligns with CWE-434 which specifically addresses insecure file upload vulnerabilities where applications fail to validate or restrict file types, sizes, or content during the upload process. The flaw operates by permitting attackers to upload malicious files that can be executed as scripts on the server, potentially leading to complete system compromise. The authentication requirement does not adequately protect against this attack vector since the vulnerability exists within the file handling mechanism itself rather than the authentication layer.
The operational impact of this vulnerability extends beyond simple privilege escalation as it provides attackers with direct access to execute arbitrary commands on the target server. This capability allows for full system compromise including data exfiltration, persistence mechanisms installation, and further network reconnaissance. The attack surface is particularly concerning because it affects customer-facing functionality where upload capabilities are expected to be restricted and validated. This vulnerability could enable attackers to establish backdoors, modify application behavior, or extract sensitive information from the server environment.
Security practitioners should implement immediate mitigations including strict file type validation, content inspection of uploaded files, and implementation of secure upload directories with restricted permissions. The principle of least privilege should be enforced by ensuring uploaded files cannot be executed directly and by implementing proper file extension filtering. Additionally, the application should employ proper input sanitization techniques and consider implementing web application firewalls to detect and block malicious upload attempts. Organizations should also conduct comprehensive security testing including penetration testing and code review processes to identify similar vulnerabilities within their applications. The ATT&CK framework categorizes this vulnerability under T1505.003 for Server Software Component and T1059 for Command and Scripting Interpreter, highlighting the multi-faceted nature of the threat. Regular security updates and patch management processes become essential to prevent exploitation of this and similar vulnerabilities in the application stack.