Sangfor Application Remote Code Execution Scanner

The Sangfor Application is widely utilized in enterprises for efficient application delivery management. It is employed by IT administrators to streamline network access, enhance security, and optimize resource allocation. Its primary purpose is ensuring seamless access to applications while implementing necessary security protocols. Sangfor Application is often found in corporate environments where application access management is critical. In such settings, the application offers centralized control and policy-based access management to users. Its user-friendly interface makes it a popular choice for organizations aiming to secure and manage network resources efficiently.

This scanner identifies a severe Remote Code Execution (RCE) vulnerability within Sangfor Application. The vulnerability enables unauthorized users to execute arbitrary commands on the server. Exploiting this flaw could potentially allow attackers to gain full control over the server, compromising the organization's network infrastructure. The RCE vulnerability is considered critical due to its ability to bypass typical security controls and execute harmful commands. Such vulnerabilities pose significant risks, potentially leading to data breaches or system shutdowns. Effective scanning and patch management are crucial to prevent exploitation.

The vulnerability is found at the '/rep/login' endpoint when certain parameters are manipulated. The vulnerable parameters include 'clsMode' and 'userID', which when improperly handled, allow attackers to inject and execute arbitrary commands. The endpoint's lack of adequate input validation is a major concern, permitting harmful inputs to compromise the system. The scanner's logic identifies these vulnerabilities by sending crafted payloads and assessing the server's responses for anomalies. Security measures like input validation and strict parameter controls are recommended to address these flaws. By identifying exact weaknesses, the scanner aids in enhancing the application's security posture.

If the RCE vulnerability is successfully exploited, an attacker could have unrestricted access to the server. This access would enable them to modify or delete critical data, conduct further attacks within the network, and potentially deploy malicious code or malware. It could lead to significant data loss, unauthorized data access, and a breach of confidential information. Such compromise might also result in a prolonged system downtime, affecting regular business operations. Moreover, infiltration by malicious actors can damage the organization's reputation and could result in substantial financial losses due to disrupted services.

REFERENCES

• https://github.com/zan8in/afrog/blob/main/v2/pocs/afrog-pocs/vulnerability/sangfor-login-rce.yaml