Horizon Alert
Summary of the vulnerability and why it matters
A use-after-free vulnerability in Google Chrome extensions could allow a remote attacker to execute arbitrary code outside the sandbox by tricking a user into installing or interacting with a malicious extension.
- A code flaw exists in browser extensions.
- It could allow unauthorized code execution.
- Confirm relevance and exposure for your organization.
Attack Path
How an attacker could exploit the issue
An attacker could trick a user into installing a malicious Chrome extension. If the user opens this extension, the attacker's code could execute outside the browser's secure sandbox, potentially allowing them to run their own commands on the user's computer.
- User must install a malicious extension.
- User must interact with the crafted extension.
- Risk of arbitrary code execution outside sandbox.
Live Threat
Current exploitation, exposure, and threat context
A use-after-free vulnerability in Chrome extensions could allow a remote attacker to execute arbitrary code outside the sandbox when supported by a crafted extension and user interaction.
- Arbitrary code execution outside sandbox.
- Remote attacker via crafted extension.
- Compromise of user's browser environment.
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability resides within Google Chrome's extension framework, meaning it primarily impacts end-user workstations and potentially any systems where custom Chrome extensions are deployed or user interaction with malicious extensions is possible. The first practical step is for system owners and security teams to identify Chrome deployments, confirm if extensions are a factor in their environment, and then assess the risk based on user behavior and the criticality of affected systems. Coordination with vendor management for updates or with internal teams for deployment is key.
- Browser and endpoint teams own this vulnerability.
- Verify extension usage and user access.
- Plan for Chrome browser updates.
