Security Best Practices for PHP and Vue.js Development: Preventing Remote Command Execution Attacks

Security best practices for PHP and Vue.js development: Preventing remote command execution attacks

Introduction:
With the rapid development of the Internet, the security of web applications has become particularly important. Remote command execution attacks (RCE) are one of the most common and dangerous attacks. Attackers can control the server, obtain sensitive information or damage the system by executing arbitrary commands.

This article will introduce how to adopt best practices to prevent remote command execution attacks when developing web applications using PHP and Vue.js. The article will elaborate on the two aspects of PHP back-end and Vue.js front-end, and give code examples to help readers better understand and apply.

1. PHP backend protection measures

1. Filtering input data
   During the PHP development process, input data obtained from users should always be considered untrustworthy. Use filter functions, such as filter_input(), filter_var(), etc., to verify and filter user input data to prevent arbitrary command execution.

Sample code:

$username = filter_input(INPUT_POST, 'username', FILTER_SANITIZE_STRING);
// 过滤并清除username中的HTML标签和特殊字符

2. Verify user permissions
   A user's permissions must be verified before performing any sensitive operations. For example, only administrators can execute certain commands. Verify user identity and permissions by using authentication and authorization mechanisms, such as session, JWT, etc.

Sample code:

session_start();
if($_SESSION['role'] != 'admin'){
   // 非管理员用户无权执行此命令
   exit();
}

3. Prevention of code injection
   Remote command execution attacks often exploit code injection vulnerabilities. In PHP development, use precompiled SQL statements or ORM frameworks, such as PDO, Laravel Eloquent, etc., to prevent SQL injection.

Sample code:

$stmt = $pdo->prepare("SELECT * FROM users WHERE username = ?");
$stmt->execute([$username]);

4. Strictly control file system permissions
   Avoid authorizing files or directories that need to execute arbitrary commands to untrusted users. Permission settings should only be given to necessary files and directories to prevent attackers from exploiting file system vulnerabilities to execute malicious commands.

2. Vue.js front-end protection measures

1. Input validation and filtering
   Similar to the PHP backend, the Vue.js front-end should validate the input obtained from the user Data is validated and filtered. You can use Vue.js's built-in instructions (v-model, v-bind, etc.) for input validation, or use third-party libraries such as Vuelidate, VeeValidate, etc.

Sample code:

<input v-model="username">
// 验证并过滤username，确保输入的数据是合法和安全的

2. String concatenation and template syntax
   In Vue.js, you should avoid using string concatenation to dynamically generate HTML code , to prevent XSS attacks. Instead, give priority to using template syntax or the dynamic binding method provided by Vue.js.

Sample code:

<span v-html="message"></span>
// 避免使用 `<span>{{ message }}</span>` 来动态生成HTML代码

3. Preventing Cross-site Request Forgery (CSRF)
   For web applications involving sensitive operations, cross-site request forgery must be carried out defense. You can prevent this by adding a CSRF token to the request header or checking the Referer header.

Sample code:

axios.defaults.headers.common['X-CSRF-TOKEN'] = document.getElementById('csrf-token').getAttribute('content');
// 将CSRF令牌添加到请求头中

Conclusion:
This article introduces the best practices for preventing remote command execution attacks in PHP and Vue.js development. We can improve the security of web applications through measures such as filtering and validating user input, authorization and authentication, preventing code injection, and tightly controlling file system permissions. At the same time, in the Vue.js front-end, input verification and filtering, string splicing and template syntax, and prevention of CSRF attacks are also essential. By correctly applying these practices, we can effectively protect web applications from remote command execution attacks.

Reference:

• [PHP input filtering](https://www.php.net/manual/zh/filter.filters.php)
• [PHP prevents SQL injection](https://www.php.net/manual/zh/security.database.sql-injection.php)
• [Vue.js official document](https://vuejs .org/)
• [Vuelidate](https://vuelidate.js.org/)
• [VeeValidate](https://baianat.github.io/vee-validate/)

The above is the detailed content of Security Best Practices for PHP and Vue.js Development: Preventing Remote Command Execution Attacks. For more information, please follow other related articles on the PHP Chinese website!