RCE (Remote Code Execution)

Remote Code Execution (RCE) is a class of vulnerabilities that allows attackers to remotely execute malicious scripts and programs on the victim's computer. RCE is a subset of the Arbitary Code Execution (ACE) vulnerability and doesn't require any physical access to the target machine.

The following vulnerabilities could lead to RCE:

• unsafe deserialization
• various injections (SQL, OS command, LDAP, etc.)
• buffer overflow flaws
• use of deprecated dependencies in the project.

Additionally, RCE can emerge from complex exploitation chains, where each individual component seems harmless on its own. You can explore such a case in this article.

Since attackers can fully access the system, RCE is considered the most dangerous type of vulnerability that can lead to credential stealing or even damage the victim's machine.

To mitigate the risks of RCE, it's necessary to take comprehensive actions:

• Sanitize user input by escaping special characters and using whitelists.
• Regularly update software components to eliminate potential vulnerabilities.
• Use virtualization mechanisms and access restrictions to prevent reading and writing outside the allocated memory area.

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