Remote Code Execution (RCE)

Remote Code Execution (RCE) is a type of vulnerability that allows an attacker to execute arbitrary code on a server. RCE vulnerabilities are among the most serious types of vulnerabilities, as they can be used to take complete control of a server.

Common Types of RCE Vulnerabilities

• Command Injection: An attacker can inject operating system commands into an application.
• Insecure Deserialization: Deserializing data from an untrusted source can lead to remote code execution.
• File Upload Vulnerabilities: An attacker can upload a malicious file that will be executed on the server.

Prevention Methods

• Input Validation and Sanitization: The most effective way to prevent RCE is to validate and to sanitize all user-supplied input.
• Use a Whitelist of Allowed Characters: If you cannot validate or sanitize user-supplied input, you can use a whitelist of allowed characters.
• Use a Sandbox: A sandbox is a security mechanism for separating running programs. You can use a sandbox to isolate your application from the underlying operating system.
• Principle of Least Privilege: The principle of least privilege states that a user should only have the minimum level of access that is necessary to perform their job.