Horizon Alert
Summary of the vulnerability and why it matters
Microsoft Internet Explorer contains a flaw that could allow attackers to determine the existence of files on a user's computer. This vulnerability arises from how Internet Explorer handles specific JavaScript code. Successful exploitation could lead to information disclosure, potentially aiding attackers in further compromising systems.
- Vulnerable: Microsoft Internet Explorer
- Flaw: Improper JavaScript handling
- Impact: Information disclosure
Attack Path
How an attacker could exploit the issue
Microsoft Internet Explorer versions 9 through 11 are affected by this vulnerability. An attacker could exploit this by leveraging crafted JavaScript code, potentially leading to information disclosure. This could impact systems by allowing attackers to determine the existence of specific files on a user's machine. The business risk involves unauthorized access to sensitive file information.
- Exposure condition: Internet Explorer is accessible online.
- Attacker starting point: Attacker crafts malicious JavaScript.
- Trigger and result: User visits a malicious site, revealing file existence.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability in Microsoft Internet Explorer could allow remote attackers to disclose the existence of files on a user's system. Attackers could exploit this by directing users to a malicious website or through specially crafted content. The potential for information disclosure presents a risk to the organization.
- Attacker skill level: Low
- Requires user interaction or specific conditions
- Business risk or urgency: Medium
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability in Microsoft Internet Explorer could allow attackers to discover the existence of files on a system. The impact is an information disclosure that could aid attackers in further system compromise. Affected organizations should take immediate action to manage this risk.
- Identify exposed Internet Explorer assets.
- Reduce exposure or isolate affected systems.
- Apply vendor fixes and validate.
- Monitor for related activity.
