Whitelist prohibits processes from calling system commands

This article discusses how to whitelist forbidden processes from calling system commands. Whitelisting forbidden processes helps prevent unauthorized access to sensitive system commands, reducing security breaches and data leaks. The article provides

Whitelist Forbidden Processes from Calling System Commands

How to whitelist forbidden processes from calling system commands?

To whitelist forbidden processes from calling system commands, you can use theauditdtool to create a rule that allows specific processes to execute certain commands. Here's how you can do it:auditdtool to create a rule that allows specific processes to execute certain commands. Here's how you can do it:

1. Create a rule file:Create a file called/etc/audit/rules.d/whitelist.ruleswith the following content:

-w /usr/bin/command -p x -c never

In this rule,/usr/bin/commandis the command that you want to whitelist,-p xspecifies that the rule applies to processes with executable permission, and-c neverspecifies that the rule should never be enforced. You can add multiple rules to the file, each on a separate line.

2. Load the rules:Load the rules file into theauditdsystem by running the following command:

sudo auditctl -R /etc/audit/rules.d/whitelist.rules

3. Restartauditd:To ensure that the rules are applied immediately, restartauditdby running:

sudo systemctl restart auditd

What are the benefits of whitelisting forbidden processes?

Whitelisting forbidden processes can help prevent unauthorized access to sensitive system commands. By restricting the ability of certain processes to execute specific commands, you can reduce the risk of security breaches and data leaks.

What are some examples of forbidden processes?

Forbidden processes are typically processes that are not essential for the operation of the system and that could be used to compromise the system if they were allowed to execute certain commands. Examples of forbidden processes include:

• Processes that have excessive file permissions
• Processes that are running with root privileges
• Processes that are known to be vulnerable to exploits

How can I audit forbidden processes?

You can audit forbidden processes by using theauditctltool. To do this, run the following command:

sudo auditctl -w /usr/bin/command -p x -c id

This command will create an audit rule that logs all attempts by processes with executable permission to execute the/usr/bin/command

1. Create a rule file: Create a file called/etc/audit/rules.d/whitelist.ruleswith the following content:

sudo cat /var/log/audit/audit.log | grep /usr/bin/command

2. Load the rules: Load the rules file into theauditdsystem by running the following command:

3. Restartauditd: To ensure that the rules are applied immediately, restartauditdby running:

• Processes that have excessive file permissions
• Processes that are running with root privileges
• Processes that are known to be vulnerable to exploits

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