External risk intelligence

Google Chrome Sandbox Escape Vulnerability

CVE advisoryKnown Exploit

CVE-2023-6345

An integer overflow in the Skia component of Google Chrome allows a compromised renderer process to potentially escape the sandbox. This could grant attackers elevated privileges. The CISA Known Exploited Vulnerabilities catalog lists this CVE, indicating active exploitation and a need for immediate remediation.

1Halo Surface Signal

Integer Overflow

Google Chrome

before 119.0.6045.19911.012.0373839before 119.0.2151.97

External exposure likelihood

Halo Surface Signal score for CVE-2023-6345

The vulnerability exists within the Skia graphics library used by client-side web browsers. Exploitation requires a user to interact with a malicious file through the browser application. It is not a network-facing service, API, or gateway that would be exposed to the public internet for remote connection.

Horizon Alert

Summary of the vulnerability and why it matters

The Skia component within Google Chrome has an integer overflow vulnerability. This flaw permits an attacker who has already compromised the browser's rendering process to potentially break out of the system's security sandbox. This could allow unauthorized access and manipulation of data or systems.

  • Vulnerable component: Google Chrome's Skia
  • Core weakness: Integer overflow
  • Main business impact: Sandbox escape

Attack Path

How an attacker could exploit the issue

An attacker could exploit an integer overflow vulnerability within the Skia graphics library. This could allow for a sandbox escape by tricking an organization's system into processing a malicious file. Successful exploitation could grant the attacker elevated privileges within the affected system.

  • Exposure: Malicious file processing.
  • Attacker access: Compromised renderer process.
  • Trigger: Malicious file processing.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability in the Skia component of Google Chrome allows attackers with compromised renderer processes to potentially escape the browser's sandbox. Successful exploitation could lead to significant data compromise and system control. Organizations using affected versions of Chrome or related products should treat this as a high-priority issue.

  • Likely attacker skill level: High
  • Required access or conditions: Compromised renderer process, malicious file
  • Business risk or urgency: Critical, requires immediate action

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability, identified as CVE-2023-6345, presents a critical risk due to its potential for a sandbox escape within Google Chrome and other affected products. Attackers who compromise the renderer process could leverage a malicious file to gain elevated privileges. The CISA Known Exploited Vulnerabilities catalog lists this CVE, indicating active exploitation and a requirement for immediate attention. Organizations utilizing affected versions of Google Chrome, Microsoft Edge (Chromium-based), Debian Linux, or Fedora should prioritize remediation to mitigate the associated business risks.

  • Find affected assets.
  • Reduce exposure or isolate risk.
  • Fix, verify, and monitor.

Frequently asked questions

What is CVE-2023-6345, and how does it affect Google Chrome?

CVE-2023-6345 is an integer overflow vulnerability in the Skia component of Google Chrome. It allows a remote attacker, who has already compromised the renderer process, to potentially escape the browser's sandbox. This could lead to unauthorized access and manipulation of data or systems. The core weakness is an integer overflow (CWE-190).

How can an attacker exploit the Skia vulnerability in Chrome?

An attacker can exploit this vulnerability by tricking an organization's system into processing a malicious file. This requires the attacker to have already compromised the renderer process within the browser. The exploit enables a potential sandbox escape, granting the attacker elevated privileges.

What is the threat advisory for CVE-2023-6345, and what is the urgency?

This vulnerability presents a critical risk due to its potential for a sandbox escape. The CISA Known Exploited Vulnerabilities catalog lists this CVE, indicating active exploitation and a requirement for immediate attention. Organizations using affected versions should prioritize remediation due to the high business risk and urgency.

What is the Halo Surface Signal assessment for this vulnerability?

The Halo Surface Signal assesses this vulnerability as 'Very unlikely' to be exploited remotely over the public internet. This is because the vulnerability exists within the Skia graphics library, and exploitation requires user interaction with a malicious file through the browser, not a directly exposed network service.

What are the recommended practical response steps for CVE-2023-6345?

Organizations should take immediate action by identifying all affected assets, including Google Chrome, Microsoft Edge (Chromium-based), Debian Linux, and Fedora. Implement necessary fixes, verify that the remediation has been successful, and continue to monitor systems for any signs of compromise. Reducing exposure or isolating the risk should also be considered as part of the response.

References