Horizon Alert
Summary of the vulnerability and why it matters
A vulnerability exists within the JavaScript engine of Google Chrome. This flaw could allow a remote attacker to corrupt system memory by presenting a specially crafted HTML page to an organization's users. Such an occurrence could lead to unpredictable system behavior or crashes, impacting the availability of business systems and potentially leading to data integrity issues.
- Vulnerable JavaScript engine
- Memory corruption flaw
- System instability and data impact
Attack Path
How an attacker could exploit the issue
This vulnerability allows an attacker to impact systems by corrupting memory. An attacker can trigger this by directing an organization's employee to a malicious web page. Successful exploitation could lead to the execution of arbitrary code within the context of the affected application, potentially resulting in the compromise of system data or functionality.
- Exposure: Organizations using vulnerable web browsers.
- Attacker access: Directing users to a crafted HTML page.
- Trigger and result: Heap corruption leading to code execution.
Live Threat
Current exploitation, exposure, and threat context
A vulnerability in the JavaScript engine of the affected browser could allow remote attackers to corrupt system memory by tricking users into visiting a specially crafted web page. This type of attack could lead to a denial-of-service condition, impacting the availability of affected systems. The attack vector requires user interaction, making it a less direct threat but still a significant risk due to the common exposure of systems to web-based content.
- Attacker skill level: Moderate
- Required access or conditions: User visits malicious page
- Business risk or urgency: Medium risk, consider urgent
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
An out-of-bounds write vulnerability in Google Chrome's JavaScript engine could allow remote attackers to cause heap corruption by directing users to a specially crafted HTML page. This type of vulnerability poses a risk of system instability or unpredictable behavior for affected organizations. The vulnerability affects specific versions of Google Chrome prior to version 73.0.3683.86.
- Find Chrome installations.
- Isolate networks from risky content.
- Update Chrome, verify fix, and monitor.
