CVE-2022-22610: Memory corruption vulnerability addressed in multiple Apple platforms with improved state management

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CVE-2022-22610 is a recently disclosed vulnerability that involves a memory corruption issue in multiple Apple platforms. This vulnerability could allow an attacker to execute their code remotely by utilizing maliciously crafted web content. In this post, we'll dive into the details of this vulnerability, share a code snippet highlighting the potential issue, and provide links to the original references.

Overview

The security update addresses the memory corruption issue by improving the state management of certain Apple platforms. Affected platforms include:

tvOS 15.4

Through the exploitation of this vulnerability, a threat actor could potentially execute arbitrary code on a vulnerable device by tricking a user into visiting a webpage containing malicious content.

Code Snippet

The following code snippet illustrates a possible implementation of the memory corruption issue. Although it is not an actual exploit, it provides an example of what a threat actor might try to use for achieving code execution. Please, treat this code as a starting point for understanding the vulnerability, not a real-world exploit:

function exploit(memory) {
  let buffer = new ArrayBuffer(8);
  let uint32 = new Uint32Array(buffer);
  memory.write(buffer);

  // Trigger the vulnerability by writing past the buffer's boundaries
  memory.write(xdeadbeef, buffer.length + 1);

  // Make use of the memory corruption
  let corruptedInt = uint32[2];
  let arbitraryCodeAddr = corruptedInt ^ xdeadbeef;

  // Execute arbitrary code
  executeCode(arbitraryCodeAddr);
}

Exploit Details

When a user visits a malicious website, the attacker could leverage CVE-2022-22610 to corrupt memory and execute code within the victim's browser. The vulnerability can be triggered through specially crafted web content, potentially utilizing JavaScript like our code snippet demonstrates.

It is essential to patch the affected systems immediately to minimize the risk of exploitation, as this vulnerability could allow an attacker to compromise a victim's system, access sensitive information, or install malware.

* Apple Security Update

- About the security content of macOS Monterey 12.3
 - About the security content of Safari 15.4
 - About the security content of watchOS 8.5
 - About the security content of iOS 15.4 and iPadOS 15.4
 - About the security content of tvOS 15.4

* CVE-2022-22610 Detail

Conclusion

CVE-2022-22610 is a memory corruption vulnerability affecting multiple Apple platforms, which could lead to code execution through malicious web content. It is crucial for users and administrators to promptly apply security updates provided by Apple for macOS Monterey 12.3, Safari 15.4, watchOS 8.5, iOS 15.4 and iPadOS 15.4, and tvOS 15.4 to mitigate this vulnerability. Stay informed and keep your systems up-to-date to ensure security against potential exploits of this nature.

Timeline

Published on: 09/23/2022 19:15:00 UTC
Last modified on: 09/28/2022 11:48:00 UTC