IMO Cloud Office Arbitrary File Download Scanner

The IMO cloud office is used by organizations to manage and store their files and documents online. It is widely utilized in various industries for efficient document sharing and collaboration. However, secure file handling and management are crucial due to the sensitivity of data involved. The platform is designed to enhance productivity by allowing users to access, edit, and share documents seamlessly. Its user-friendly interface and integration capabilities make it a popular choice among businesses that require robust cloud-based document solutions. However, without proper security measures, these platforms can become targets for malicious actors.

An Arbitrary File Download vulnerability allows unauthorized users to download files without proper access rights. This type of vulnerability often stems from insufficient validation or improper filtering mechanisms in handling file paths or names on the server-side. Attackers exploit these flaws to access sensitive files, which can lead to information leakage or further exploitation of the system. Ensuring that file access controls are correctly implemented and maintained is vital to prevent exploitation. The use of proper validation and filtering measures is essential in minimizing the risks associated with such vulnerabilities.

The technical flaw in this case lies in the IMO cloud office's file handling functionality. Specifically, the filename parameter in the /file/Placard/upload/Imo_DownLoadUI.php endpoint is inadequately filtered. By manipulating this parameter, attackers can specify arbitrary file paths leading to the download of unauthorized files. The server's response, typically including expected PHP content and specific header details, confirms the vulnerability. Such oversight in input validation raises significant security risks, making it vital for system administrators to address this issue promptly.

If exploited, this vulnerability could allow attackers to access sensitive files stored on the server, leading to information theft, data breaches, and loss of confidential information. Additionally, the exposure of configuration or system files increases the risk of unauthorized access and subsequent attacks on other system components. Organizations could suffer reputational damage, financial loss, and legal consequences as a result of such breaches. Protecting against this risk requires immediate attention to secure vulnerable endpoints effectively.

REFERENCES

• https://forum.butian.net/article/214