Horizon Alert
Summary of the vulnerability and why it matters
Microsoft Office applications contain a stack-based buffer overflow vulnerability. This flaw allows for the execution of arbitrary code when a user opens a specially crafted Word document. The potential impact includes unauthorized code execution, leading to compromised systems and data.
- Vulnerable Microsoft Office applications.
- Crafted document triggers code execution.
- Business risk from compromised systems.
Attack Path
How an attacker could exploit the issue
This vulnerability allows an attacker to execute arbitrary code by tricking a user into opening a specially crafted Word document. The attacker can craft a document that exploits a buffer overflow vulnerability in how Office handles a specific tag. Opening this document could lead to the attacker gaining control of the user's system.
- Exposure requires a user to open a document.
- Attacker begins by sending a malicious document.
- Trigger is opening the document, resulting in code execution.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability in Microsoft Office allows attackers to execute arbitrary code by tricking users into opening a specially crafted Word document. The crafted document contains an invalid length field within a tag, leading to a stack-based buffer overflow. This could allow an attacker to compromise systems that use affected versions of Microsoft Office.
- Attacker skill level: Moderate.
- Required access or conditions: User must open a malicious document.
- Business risk or urgency: Treat as urgent.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability involves a buffer overflow in Microsoft Office, allowing for code execution through a specially crafted Word document. Organizations should prioritize identifying and addressing affected systems to mitigate potential business risks.
- Find affected Microsoft Office assets.
- Reduce exposure or isolate risk.
- Apply vendor fixes and verify.
- Monitor for related issues.
