Discuz ML Remote Code Execution Scanner

Discuz ML is a widely used community forum software system. It serves as a platform for discussions and communication across various topics and communities. Often employed by small to medium-sized enterprises and online communities, it facilitates user interaction. Discuz ML is popular for its robust features that cater to different audience needs. It supports extensive customization and plugin integration to enhance user experience. Being open-source, it is employed worldwide by developers and businesses alike.

The Remote Code Execution (RCE) vulnerability enables attackers to execute arbitrary code on a server. This type of vulnerability is critical as it allows unauthorized users to gain control over affected systems. It might be exploited by injecting malicious scripts through various inputs, leading to potential server manipulation. RCE vulnerabilities are often targeted in forums or web applications with high user engagement. The impact of exploiting such vulnerabilities can be severe, affecting data integrity and confidentiality.

Technical details indicate that the vulnerability arises from improper handling of user inputs in Discuz ML V3.X. Specifically, the injection occurs via URL paths where user input influences system commands. Attackers can exploit this flaw by sending crafted requests to endpoints like 'portal.php' or 'forum.php'. The payload is injected through parameters that execute injected scripts at the server level. The vulnerability primarily hinges on inadequate validation of user-controlled inputs within the system’s operational logic.

When exploited, this vulnerability could have devastating consequences. Attackers could execute commands, potentially modifying or deleting essential system files. They might escalate privileges, leading to complete server compromise. Sensitive information stored on the server could be exposed and exploited. Moreover, this could facilitate backdoor installation, enabling future malicious activities. The resulting downtime and data loss could severely impact affected organizations.

REFERENCES

• http://discuz.net/