How to Prevent Logging Attacks (Log4J) in Android Apps

Last updated August 23, 2022 by Appdome

Learn to Prevent Logging Attacks in Android apps, in mobile CI/CD with a Data-Driven DevSecOps™ build system.

What are Logging Attacks?

Logging utilities, such as the popular Apache Log4j, simplify debugging. Recent critical vulnerabilities exposed that the utility can be used for remote code execution and denial of service. The default configuration of Apache Log4j supports JNDI (Java Naming and Directory Interface) lookups that can be exploited to exfiltrate data or execute arbitrary code via remote services such as LDAP, RMI, and DNS.

Why Prevent Logging Attacks in Android Apps ?

The Apache Log4j vulnerability is potentially present in Java servers in mobile apps that use Cordova, React Native, or any app that uses java classes. By using Prevent Logging Attacks, Android log function calls are disabled. This prevents any data leakage and any attacks via logging infrastructure (for example, log4j).

Preventing Logging Attacks on Android apps by Using Appdome

On Appdome, follow these 3 simple steps to create self-defending Android Apps that Prevent Logging Attacks without an SDK or gateway:

  1. Upload the Mobile App to Appdome.

    1. Upload an app to Appdome’s Mobile App Security Build System

    2. Upload Method: Appdome Console or DEV-API
    3. Android Formats: .apk or .aab
  2. Build the Protection: Prevent Logging Attacks.

    1. Building Prevent Logging Attacks by using Appdome’s DEV-API:

      1. Create and name the Fusion Set (security template) that will contain the Prevent Logging Attacks feature as shown below:
      2. fusion set that contains Prevent Logging Attacks

        Figure 1: Fusion Set that will contain the Prevent Logging Attacks feature
        Note: Naming the Fusion Set to correspond to the protection(s) selected is for illustration purposes only (not required).

      3. Follow the steps in Sections 2.2.1-2.2.2 of this article, Building the Prevent Logging Attacks feature via Appdome Console, to add the Prevent Logging Attacks feature to this Fusion Set.

      4. Open the Fusion Set Detail Summary by clicking the “...” symbol on the far-right corner of the Fusion Set, as shown in Figure 1 above, and get the Fusion Set ID from the Fusion Set Detail Summary (as shown below): fusion Set Detail Summary image

        Figure 2: Fusion Set Detail Summary
        Note: Annotating the Fusion Set to identify the protection(s) selected is optional only (not mandatory).

      5. Follow the instructions below to use the Fusion Set ID inside any standard mobile DevOps or CI/CD toolkit like Bitrise, App Center, Jenkins, Travis, Team City, Cirlce CI or other system:
        1. Build an API for the app – for instructions, see the tasks under Appdome API Reference Guide
        2. Look for sample APIs in Appdome’s GitHub Repository
    2. Building the Prevent Logging Attacks feature via Appdome Console

      To build the Prevent Logging Attacks protection by using Appdome Console, follow the instructions below.

      1. Where: Inside the Appdome Console, go to Build > Anti Fraud Tab > Mobile Malware Prevention section
      2. How: Toggle (turn ON) Prevent Logging Attacks, as shown belowLogging Attacks, If needed, Customize the Threat Notification to be displayed to the mobile end-user in a standard OS dialog notification when Appdome Prevents . Prevent Logging Attacks option

        Figure 3: Prevent Logging Attacks option
        Note: The App Compromise Notification contains an easy to follow default remediation path for the mobile app end user. You can customize this message as required to achieve brand specific support, workflow or other messaging.

      3. When you select the Prevent Logging Attacks you'll notice that your Fusion Set you created in step 2.1.1 now bears the icon of the protection category that contains Prevent Logging Attacks

        Fusion Set applied Prevent Logging Attacks

        Figure 4: Fusion Set that displays the newly added Prevent Logging Attacks protection

      4. Click Build My App at the bottom of the Build Workflow (shown in Figure 3).
    Congratulations!  The Prevent Logging Attacks protection is now added to the mobile app
  3. Certify the Prevent Logging Attacks feature in Android Apps.

    After building Prevent Logging Attacks, Appdome generates a Certified Secure™ certificate to guarantee that the Prevent Logging Attacks protection has been added and is protecting the app. To verify that the Prevent Logging Attacks protection has been added to the mobile app, locate the protection in the Certified Secure™ certificate as shown below: Prevent Logging Attacks shown in Certificate secure

    Figure 5: Certified Secure™ certificate

    Each Certified Secure™ certificate provides DevOps and DevSecOps organizations the entire workflow summary, audit trail of each build, and proof of protection that Prevent Logging Attacks has been added to each Android app. Certified Secure provides instant and in-line DevSecOps compliance certification that Prevent Logging Attacks and other mobile app security features are in each build of the mobile app

Prerequisites to Using Prevent Logging Attacks:

To use Appdome’s mobile app security build system to Prevent Logging Attacks , you’ll need:

Using Appdome, there are no development or coding prerequisites to build secured Apps by using Prevent Logging Attacks. There is no SDK and no library to code or implement in the app and no gateway to deploy in your network. All protections are built into each app and the resulting app is self-defending and self-protecting.

Releasing and Publishing Mobile Apps with Prevent Logging Attacks

After successfully securing your app by using Appdome, there are several available options to complete your project, depending on your app lifecycle or workflow. These include:

All apps protected by Appdome are fully compatible with any public app store, including Apple App Store, Google Play, Huawei App Gallery and more.

Protections Similar to Prevent Logging Attacks

If you have any questions, please send them our way at support.appdome.com or via the chat window on the Appdome platform.

Thank you!

Thanks for visiting Appdome! Our mission is to secure every app on the planet by making mobile app security easy. We hope we’re living up to the mission with your project.

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