CVE-2018-6063 : Security Advisory and Response

A vulnerability in Mojo in Google Chrome versions prior to 65.0.3325.146 allowed an attacker to perform an out-of-bounds memory write by exploiting the incorrect usage of mojo::WrapSharedMemoryHandle.

Understanding CVE-2018-6063

This CVE involves a security issue in Google Chrome that could be exploited by a remote attacker.

What is CVE-2018-6063?

The vulnerability in Mojo in Google Chrome versions before 65.0.3325.146 enabled an attacker, who had compromised the renderer process, to execute an out-of-bounds memory write by misusing mojo::WrapSharedMemoryHandle. This could be triggered through a manipulated HTML page.

The Impact of CVE-2018-6063

The vulnerability allowed a remote attacker to compromise the renderer process and perform unauthorized memory write operations, potentially leading to further exploitation of the affected system.

Technical Details of CVE-2018-6063

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability stemmed from the incorrect use of mojo::WrapSharedMemoryHandle in Mojo in Google Chrome versions prior to 65.0.3325.146, enabling a remote attacker to conduct an out-of-bounds memory write through a crafted HTML page.

Affected Systems and Versions

Product: Chrome
Vendor: Google
Versions Affected: Prior to 65.0.3325.146

Exploitation Mechanism

The vulnerability could be exploited by an attacker who had compromised the renderer process, allowing them to perform an out-of-bounds memory write by manipulating an HTML page.

Mitigation and Prevention

Protecting systems from CVE-2018-6063 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Google Chrome to version 65.0.3325.146 or later to mitigate the vulnerability.
Avoid visiting untrusted websites or clicking on suspicious links to prevent potential exploitation.

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities.
Implement robust security measures such as firewalls and antivirus software to enhance system protection.

Patching and Updates

Google released a patch in version 65.0.3325.146 to address the vulnerability. Ensure all systems are updated with the latest patches to prevent exploitation.