Softneta MedDream PACS Server Local File Inclusion Scanner

Softneta’s MedDream PACS is a web-based DICOM viewer designed for convenient search, presentation, and distribution of medical images. It is used by healthcare professionals in hospitals, teleradiology service providers, and medical diagnostics centers. The PACS system allows for easy integration with various healthcare modalities, enabling seamless workflow within clinical settings. Its primary use is to support doctors and radiologists in diagnosing and analyzing medical images accurately. Being web-based, this product provides flexibility and remote access to patient data, enhancing the efficiency of medical services. MedDream's focus is to improve the quality of medical diagnostics by streamlining the data retrieval and visualization process.

The Local File Inclusion (LFI) vulnerability occurs when a web application include files on a server based on user-supplied input without proper validation or filtering. This vulnerability is often present in web applications that fail to sanitize the 'path' input, allowing an attacker to cause the application to execute or include unintended or sensitive files. In this specific context, the MedDream PACS server is susceptible to LFI, potentially allowing unauthorized access to sensitive files on the server. This can lead to unauthorized data access, causing significant security breaches if exploited. LFI can sometimes be a precursor to other more severe vulnerabilities, depending on the files accessed.

The vulnerability in Softneta MedDream PACS revolves around the inclusion of local files via the URL parameter 'path' without adequate validation. Attackers can manipulate this parameter to traverse directories and access sensitive files, such as the 'win.ini' file in Windows environments. The exploitation involves altering the file path in HTTP requests to reach and include files not intended to be accessed directly by users. Commonly, attackers use URL encoding techniques to bypass basic security filters and traverse directories by injecting sequences like '%5c%2e%2e%5c%2e%2e'. This breach in security showcases the importance of proper input validation in web applications to avoid unauthorized file access or code execution.

If exploited, this vulnerability could allow attackers to retrieve critical configuration files and sensitive data from the server. Malicious individuals might use such information for further attacks, such as escalating privileges or executing arbitrary code. Retrieving specific files could reveal system details or stored credentials, potentially leading to loss of data integrity and confidentiality. The unauthorized access provided by LFI can act as a gateway for further exploitation, impacting the server and associated network resources. It poses significant risks to patient confidentiality, a crucial aspect in healthcare environments reliant on PACS systems for daily operations.

REFERENCES

• https://www.exploit-db.com/exploits/45347
• https://www.softneta.com/products/meddream-pacs-server/downloads.html