Rule Category

FILE-OFFICE -- Snort detected traffic targeting vulnerabilities in files belonging to the Microsoft Office suite of software (Excel, PowerPoint, Word, Visio, Access, Outlook, etc.).

Alert Message

FILE-OFFICE Microsoft Office RTF listoverride memory corruption attempt

Rule Explanation

This event is generated when an attacker attempts to exploit a memory corruption vulnerability in Microsoft Office Impact: Attempted User Privilege Gain Details: Rule checks for an attempt to exploit a memory corruption vulnerability in Microsoft office versions prior to 2016 that is triggered with a maliciously-crafted RTF file. Ease of Attack: Hard

What To Look For

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

MITRE ATT&CK Framework

Tactic:

Technique:

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org

CVE

Additional Links

Rule Vulnerability

CVE Additional Information

CVE-2018-0922
Microsoft Office 2010 SP2, 2013 SP1, and 2016, Microsoft Office 2016 Click-to-Run Microsoft Office 2016 for Mac, Microsoft Office Compatibility Pack SP2, Microsoft Office Web Apps 2010 SP2, Microsoft Office Web Apps 2013 SP1, Microsoft Office Word Viewer, Microsoft SharePoint Enterprise Server 2013 SP1, Microsoft SharePoint Enterprise Server 2016, Microsoft Office Compatibility Pack SP2, Microsoft Online Server 2016, Microsoft SharePoint Server 2010 SP2, Microsoft Word 2007 SP3, Microsoft Word 2010 SP2, Word 2013 and Microsoft Word 2016 allow a remote code execution vulnerability due to how objects are handled in memory, aka "Microsoft Office Memory Corruption Vulnerability".
Details
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