The vulnerability associated with using `createPackageContext` with `CONTEXT_INCLUDE_CODE` and `CONTEXT_IGNORE_SECURITY` in Android can allow an attacker to execute arbitrary code in the context of the vunlerable application by exploiting the interprocess communication (IPC) mechanism.

In Android, each app is sandboxed to prevent unauthorized access to resources and system functionality. However, apps can interact with each other through IPC mechanisms such as `createPackageContext`. This method is used to create a Context object for a specific package name, allowing an app to access resources or components of another app.

By requesting the `android.permission.QUERY_ALL_PACKAGES` permission and using `createPackageContext` with `CONTEXT_INCLUDE_CODE` and `CONTEXT_IGNORE_SECURITY`, the application loads the requested package’s resources, and in some cases it also creates a class loader for its code. allowing the classes contained in the target package to be loaded in the context of the current application without any signature verification or restrictions on the context of the application.

`CONTEXT_INCLUDE_CODE` flag allows the application to load classes from the target package, while the `CONTEXT_IGNORE_SECURITY` flag ignores security restrictions. Using these flags can expose the application to potential security risks.

=== "Java"
	```java
	import android.content.Context;
	import android.content.pm.PackageInfo;
	import android.content.pm.PackageManager;
	import java.lang.reflect.Method;
	import java.util.List;
	
	public final class InsecurePackageContext {
	
	    public static void main(String[] args) {
	        Context context = getContext();
	        PackageManager packageManager = context.getPackageManager();
	
	        List<PackageInfo> installedPackages = packageManager.getInstalledPackages(PackageManager.GET_META_DATA);
	
	        for (PackageInfo info : installedPackages) {
	            String packageName = info.packageName;
	
	            if (packageName.startsWith("co.ostorlab.")) {
	                try {
	                    Context packageContext = context.createPackageContext(packageName,
	                            Context.CONTEXT_INCLUDE_CODE | Context.CONTEXT_IGNORE_SECURITY);
	
	                    Class<?> loaderClass = packageContext.getClassLoader().loadClass("co.ostorlab.payload");
	                    Method updateMethod = loaderClass.getMethod("Update", Context.class);
	                    updateMethod.invoke(null, context);
	
	                } catch (Exception e) {
	                    throw new RuntimeException(e);
	                }
	            }
	        }
	    }
	}
	
	```
