Horizon Alert
Summary of the vulnerability and why it matters
Microsoft Word and related applications are affected by a flaw that can be triggered by specially crafted Rich Text Format (RTF) documents. This weakness allows attackers to potentially execute unauthorized code or disrupt system operations by corrupting memory. The impact on organizations could involve compromised systems and data, leading to business risk.
- Vulnerable Microsoft Office applications.
- Flaw permits code execution or DoS.
- Business risk from compromised systems.
Attack Path
How an attacker could exploit the issue
Microsoft Office products, including Word, Word Viewer, and Office Compatibility Pack, are susceptible to an attack involving specially crafted Rich Text Format (RTF) data. This vulnerability can lead to the execution of arbitrary code or a denial-of-service condition due to memory corruption. Attackers can exploit this by presenting malicious RTF data to the targeted system. The impact on an organization could involve unauthorized code execution or system instability, affecting the integrity and availability of affected systems and data.
- Exposure via crafted RTF data.
- Attacker initiates with malicious RTF.
- Result is code execution or memory corruption.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability impacts Microsoft Office applications, allowing for arbitrary code execution or denial of service when a user opens a specially crafted RTF document. Organizations face the risk of system compromise and data loss if affected software is in use and exposed to malicious files. The difficulty of exploitation is moderate, requiring user interaction with a malicious document.
- Attackers likely need moderate skill.
- Requires opening a malicious document.
- Business risk is significant for affected systems.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability impacts specific versions of Microsoft Word, Office Compatibility Pack, and Office Web Apps, potentially allowing for arbitrary code execution or denial of service when processing specially crafted RTF data. The business risk includes unauthorized system access and operational disruption.
- Identify affected Microsoft Office products.
- Restrict RTF file handling.
- Apply vendor patches and verify.
- Monitor for related activity.
