CVE-2022-3310 identifies a security vulnerability related to insufficient policy enforcement in custom tabs in Google Chrome on Android devices. The Chromium project marked this vulnerability's security severity as "Medium." It affects Google Chrome versions before 106..5249.62. An attacker who convinces a user to install a malicious application can exploit this vulnerability to bypass the same-origin policy.

In this long-read post, we'll discuss the details of CVE-2022-3310 and provide code snippets, links to original references, and information about exploiting this vulnerability.

Understanding Custom Tabs and Same-Origin Policy

Custom tabs are a feature in Google Chrome that allows applications to open web content within the app itself, providing a seamless experience for users. These tabs adhere to the same-origin policy of the Google Chrome browser, which aims to prevent malicious code on one website from accessing sensitive data on another site.

The same-origin policy is a critical security feature found in web browsers that prevents web pages from different origins (domains, protocols, or ports) from accessing each other's sensitive data, such as cookies, localStorage, and more.

Exploiting CVE-2022-3310

To exploit this vulnerability, an attacker must convince a victim to install a malicious application on their Android device. This application would then bypass the same-origin policy when opening a custom tab in Google Chrome, potentially gaining unauthorized access to sensitive data or performing actions on behalf of the user.

Here's a simplified code snippet illustrating the basics of creating a custom tab with a vulnerable browser:

// MainActivity.java
import android.support.customtabs.CustomTabsIntent;

public class MainActivity extends AppCompatActivity {

    ...

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        ...
        // Configure and launch custom tab with a target URL
        CustomTabsIntent.Builder builder = new CustomTabsIntent.Builder();
        CustomTabsIntent customTabsIntent = builder.build();
        customTabsIntent.launchUrl(this, Uri.parse("https://example.com";));
    }
}

This code snippet intentionally omits error checking and necessary utility methods for brevity.

Mitigation and Solution

Google has already addressed this issue in Google Chrome version 106..5249.62. To secure your Android device, you must update Google Chrome to the latest version, as mentioned above or later. You can update your browser by visiting the Google Play Store or the "About Google Chrome" section in the app's settings.

Summary

CVE-2022-3310 represents a medium-severity vulnerability in custom tabs in Google Chrome on Android. An attacker who convinces a user to install a crafted application can bypass the same-origin policy, potentially leading to unauthorized data access or manipulation. It is essential to update Google Chrome to version 106..5249.62 or later to mitigate this risk.

For more information regarding this vulnerability, consult the following resources

- Chromium Security Advisory - CVE-2022-3310
- CVE Details - CVE-2022-3310

In conclusion, CVE-2022-3310 highlights the importance of updating applications and operating systems to ensure a secure user experience. By staying informed about recent updates and vulnerabilities, users can protect their data and maintain the integrity of their devices better.

Timeline

Published on: 11/01/2022 20:15:00 UTC
Last modified on: 12/09/2022 15:48:00 UTC