CNVD-2018-26783 Scanner

Arcms is a content management system that leverages layui and arphp frameworks. It is used by developers and webmasters to manage content more efficiently through an organized interface. The system is designed to provide various functions such as user management, resource organization, and content display, assisting users in tailoring web content presentation. Due to its ease of use and features, Arcms is oftentimes deployed in small to mid-sized enterprise environments for web management activities. Users appreciate its flexibility and modular design, allowing customization and adaptability to meet diverse requirements. Its incorporation of collaborative tools also supports team-based management of web content.

The unauthorized admin access vulnerability in Arcms stems from improper authentication mechanisms on specific endpoints. This vulnerability allows attackers to gain elevated privileges by bypassing usual authentication controls. The vulnerability targets the index/main, user/useradd, and img/images functionalities within the software. Exploiting this flaw might enable unauthorized users to manipulate system settings, access confidential information, or execute admin-level actions without proper credentials. The lack of certain access controls can lead to significant security breaches, exposing sensitive data to hostile entities. The severity of the vulnerability necessitates swift remediation to prevent potential exploitation.

The vulnerability arises due to the failure of Arcms to authenticate entry points like index/main, user/useradd, and img/images. An attacker can exploit this by sending crafted requests to the application, bypassing authentication controls altogether. Analysis of the vulnerable endpoints reveals that they fail to enforce robust permission checks, allowing unauthorized operations. Scripts may be utilized to automate access and exploit the vulnerability further by identifying and manipulating critical application functions. The typical exploitation involves intercepting the communication and injecting unauthorized requests, which may trick the system into granting admin privileges. System administrators must be vigilant in understanding the parameters associated with this vulnerability for effective mitigation.

Exploitation of this vulnerability can result in severe outcomes including unauthorized changes to system configurations, exposure of sensitive user data, and potential shutdown of the content management system. Attackers might also establish persistent backdoors within the system, facilitating future unauthorized access or the deployment of malicious software. These incidents could lead to reputational damage and financial losses as sensitive information is compromised. Furthermore, compromised systems might be leveraged in broader attacks against organizational infrastructure. It is vital for administrators to address this vulnerability promptly to safeguard operational integrity.