A software company decides to study and implement some new security features in the software it develops in C++ language. Developers are trying to find a way to avoid a malicious process that can access another process's execution area. Which of the following techniques can the developers do?
Enabling NX (No Execute) is a security feature that helps by marking certain memory areas as non-executable, reducing the risk of malicious software exploits that involve injecting and executing code in data pages. In the context of C++ software development, where explicit memory management is common, utilizing NX can significantly enhance security by preventing unintended execution in specific areas of memory.
I'd say NX, but that keeps anything from being executed, this states "find a way to avoid malicious process that can access another process's execution area" So NX is a deal breaker. Which only leaves D
A. Enable NX: NX (No eXecute) is a technology used in CPUs to segregate areas of memory for use by either storage of processor instructions (code) or for storage of data. When NX is enabled, areas of memory used for storage of processor instructions prevent the execution of code in data pages, which reduces the risk of malicious software exploits
A. Enable NX. Enabling NX (No Execute) or DEP (Data Execution Prevention) is a security feature that helps prevent malicious code from executing in designated areas of memory. It marks certain areas of memory as non-executable, which can prevent attacks that involve injecting and executing code in a process's execution area. This is an effective technique to enhance security against such attacks in C++ software development.
The NX bit (No-eXecute) is a hardware feature that marks certain areas of memory as non-executable. This means that even if an attacker manages to inject malicious code into these protected areas, the code cannot be executed. Enabling NX helps prevent certain types of attacks, such as buffer overflow attacks, where malicious code is injected into a process's memory space and then executed. This is particularly relevant for software written in languages like C++ that do not inherently have strong memory safety guarantees.
D. Implement memory encryption. Memory encryption involves encoding the content of memory to prevent unauthorized access, making it more difficult for malicious processes to read or modify the data in another process's execution area. This is a security measure that can help protect against various types of attacks, including those attempting to exploit vulnerabilities in software.