Tongda OA Meeting Unauthorized Admin Access Scanner

Tongda OA is an office automation software widely used by organizations to manage daily administrative activities, including meeting scheduling, document management, and internal communications. Typically deployed in corporate networks, Tongda OA assists employees in efficiently organizing meetings, managing workflows, and storing important documents. Owing to its comprehensive functionality, it often becomes a central portal for employee access across various departments. Used mainly in office environments, the software aims to streamline operations and improve organizational productivity. Users access Tongda OA through a web interface, contributing to its popularity in multiple geographical markets within the corporate sector.

The unauthorized admin access vulnerability in Tongda OA allows adversaries to bypass authentication mechanisms, gaining access to sensitive admin functionalities. Such vulnerabilities exist when there's a flaw in the authentication process, permitting unauthorized users to exploit systems privileges. This can lead to unapproved data access, configuration changes, and, in some cases, full administrative control over the software. Enterprises using Tongda OA potentially risk unauthorized entities gaining deep access to administrative-level functionalities without proper credentials. The issue becomes critical in networks where these forms of authentication vulnerabilities can go undetected or are improperly mitigated.

Technically, the vulnerability exists due to improper validation of user roles and authentication cookies, especially in the endpoint 'get_cal_list.php'. This endpoint does not adequately check user credentials or session tokens leading to unauthorized access. Attackers utilize specific timing parameters to trick the application into considering a session valid, eventually extracting sensitive data from the application's meeting module. Further complicating security, the response header containing JSON data confirms improper access controls in place. Thus, insufficient handling of sessions and permissions constitutes the core of this vulnerability.

If exploited, this vulnerability could lead attackers to gain unauthorized access to administrative functionalities, potentially leading to altered configurations, unauthorized data manipulations, and data breaches. Malicious entities might exploit these unauthorized access capabilities to disrupt company operations, steal sensitive data, or incur financial losses to the organization. The exposure of business-critical data could occur, thereby threatening corporate security and possibly leading to regulatory non-compliance. Furthermore, adverse impacts might include compromised user credentials, unauthorized access to future and current business plans, and potential sabotaging of administrative systems.

REFERENCES

• https://github.com/hktalent/scan4all/blob/2a7faf7862265eab33699034fd193bcf11b44e0f/config/poc/%E9%80%9A%E8%BE%BEoa/%E9%80%9A%E8%BE%BEoa-meeting-unauthorized-access.json#L10