CVE-2021-45027 Scanner

Oliver 5 Library Server is a comprehensive library management software used by educational institutions, government agencies, and corporate libraries. It offers functionalities for catalog management, circulation, and user access across different environments. Its modular setup allows customization to suit specific library needs. The product optimizes the library operations by ensuring efficient book management and user interaction. Libraries can leverage its robust system to perform daily tasks, such as tracking checkouts and returns, with ease. This software enhances transparency and accessibility within library systems.

The Local File Inclusion (LFI) vulnerability in the Oliver 5 Library Server can be exploited by attackers through the FileServlet function. This flaw allows unauthorized access to local files on the server by manipulating input parameters. Attackers may exploit this to leak sensitive information or gain insights into the server setup, which could aid further attacks. Usually, such vulnerabilities arise due to improper handling of file paths and lack of sanitization. LFI is particularly concerning as it doesn't require user interaction, elevating its exploit potential. Thus, addressing this vulnerability is critical to safeguarding the server's integrity.

The Oliver 5 Library Server is affected by the Local File Inclusion vulnerability through its FileServlet function. The vulnerability is triggered when unsanitized inputs in the 'fileName' parameter allow arbitrary reading of files on the server. Unauthorized users can construct specific requests to access system files like 'c:/windows/win.ini', bypassing normal access controls. Evidence of the vulnerability can be observed through response patterns in HTTP requests targeting these endpoints. Attackers often use this loophole to leverage sensitive data exposure, making the knowledge of path structures invaluable to them. The presence of certain keywords such as "bit app support" and "fonts" in responses confirms the vulnerability's impact.

Exploiting this LFI vulnerability could lead to serious security breaches, including unauthorized data access, information disclosure, and potential server compromise. Malicious users might extract sensitive configuration files, exposing critical data like passwords or system configurations. If exploited effectively, it might even allow attackers to execute further attacks, potentially leading to data manipulation or denial of service. Additionally, such exploits could serve as a stepping stone for more severe breaches, especially when combined with other vulnerabilities. Therefore, remediations should be promptly implemented to prevent any adverse impacts.

REFERENCES

• https://www.exploit-db.com/exploits/50599
• https://www.softlinkint.com/product/oliver/
• https://nvd.nist.gov/vuln/detail/CVE-2021-45027