Overview
The vulnerability CVE-2025-5063 is a serious cybersecurity risk that affects Google Chrome’s compositing process prior to version 137.0.7151.55. This use-after-free vulnerability could be exploited by a remote attacker through a carefully crafted HTML page, potentially leading to heap corruption. The issue is a significant concern due to the widespread use of Google Chrome, making many systems potentially vulnerable. The severity of the issue is underscored by its potential to compromise entire systems or lead to significant data leakage.
Vulnerability Summary
CVE ID: CVE-2025-5063
Severity: High (CVSS: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Google Chrome | Prior to 137.0.7151.55
How the Exploit Works
The CVE-2025-5063 vulnerability is a use-after-free flaw in Google Chrome’s compositing process. In a use-after-free vulnerability, a program continues to use memory after it has been freed or deleted, leading to a condition that can be exploited by an attacker.
In this particular case, a remote attacker can exploit this vulnerability by crafting a malicious HTML page. When this page is loaded in a vulnerable version of Google Chrome, the browser might attempt to access a memory block that has already been freed within its compositing process. This can lead to heap corruption, which could, in turn, allow the attacker to execute arbitrary code, potentially leading to system compromise or data leakage.
Conceptual Example Code
Below is a conceptual example of a malicious HTML that an attacker might use to exploit this vulnerability. This is not a real exploit code, but a simplified representation of how an attacker might attempt to trigger the use-after-free condition:
<!DOCTYPE html>
<html>
<body>
<script>
// create an object that will be removed later
var obj = document.createElement('object');
// append the object to the body to place it in memory
document.body.appendChild(obj);
// remove the object to free up the memory it occupied
document.body.removeChild(obj);
// attempt to use the removed object, triggering the use-after-free condition
obj.specificFunction();
</script>
</body>
</html>Note: The real-world exploitation of use-after-free vulnerabilities typically involves more sophisticated techniques and deep understanding of browser internals, memory management, and exploitation techniques. The example provided here is greatly simplified for illustrative purposes.