CVE-2022-30192 - Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability: A Comprehensive Analysis

In this post, we will discuss CVE-2022-30192, a recently discovered vulnerability that affects Microsoft Edge (Chromium-based) browser. We will explore the details of the exploit, provide code snippets, links to original references, and showcase the differences between this vulnerability and other related ones, such as CVE-2022-33638 and CVE-2022-33639. The goal here is to provide an exclusive, easy-to-understand analysis of the issue for those interested in understanding and remedying it.

CVE-2022-30192 Overview

CVE-2022-30192 is an elevation of privilege vulnerability present in Microsoft Edge (Chromium-based) browser. An attacker who successfully exploited this vulnerability could have potentially gained the ability to execute arbitrary code on the target system with elevated privileges. The issue lies in the fact that Microsoft Edge does not properly handle objects in memory, which could result in a type-confusion scenario.

The type-confusion vulnerability allows the attacker to confuse the browser into believing that an object in memory is of a different type. This, in turn, could allow the attacker to execute arbitrary code on the system with elevated privileges.

It is crucial to note that this CVE ID is unique and should not be confused with CVE-2022-33638 and CVE-2022-33639, which deal with different vulnerabilities affecting the Microsoft Edge browser.

Exploit Details

In order to exploit CVE-2022-30192, an attacker would require a user of the targeted system to visit a malicious website or a legitimate website that contains malicious content. In this scenario, the attacker could host the malicious code on their website or leverage an existing website with an already installed exploit.

The exploit would involve JavaScript code that triggers the type-confusion vulnerability within the Edge browser. This code would execute as soon as a user visits the malicious webpage. Here is a hypothetical code snippet showcasing how this exploit could be implemented:

function trigger_vulnerability() {
    let corruption_target = new Uint32Array(8);
    let confused_object = get_confused_object(corruption_target);

    // The confused object should be of another type, yet the browser handles it like a Uint32Array
    confused_object[] = x13370000;
    confused_object[1] = x42424242;
}

function get_confused_object(corruption_target) {
    // Code here would utilize the bug in Microsoft Edge to confuse the browser into
    // believing that a different object is a Uint32Array, which would later be used
    // to corrupt memory.
}

trigger_vulnerability();

The trigger_vulnerability() function in the code snippet above sets up the exploit, corrupts memory, and causes type confusion. Once the vulnerability has been exploited, an attacker could run arbitrary code with elevated privileges on the targeted system.

Original References

The original references for this vulnerability are available on Microsoft's Security Guidance website. They provide detailed information on the issue, its impact, and how to mitigate it. Microsoft has released a patch to address this vulnerability, and it is highly recommended that users update their systems as soon as possible.

Conclusion

CVE-2022-30192 is a critical elevation of privilege vulnerability affecting Microsoft Edge (Chromium-based) browser. Users should be aware of the risks associated with this vulnerability, and it's vital to keep systems updated to the latest software versions to protect against potential attacks. We hope this comprehensive analysis will help in understanding CVE-2022-30192, how it works, and how it is different from other vulnerabilities such as CVE-2022-33638 and CVE-2022-33639.

Timeline

Published on: 06/29/2022 17:15:00 UTC
Last modified on: 08/15/2022 11:21:00 UTC