Rule Category

FILE-OTHER -- Snort detected traffic targeting vulnerabilities in a file type that does not require enough rule coverage to have its own category.

Alert Message

FILE-OTHER Microsoft Windows CLFS privilege escalation attempt

Rule Explanation

This event is generated when a file that exploits the vulnerability outlined in CVE-2018-0844 is detected entering the network. Impact: Medium Details: The vulnerability in question allows a crafted BLF file to execute an out of bounds write that could lead to privilege escalation. Ease of Attack: Medium

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-2018-0844
The Windows Common Log File System (CLFS) driver in Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2008 SP2 and R2 SP1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703 and 1709, Windows Server 2016 and Windows Server, version 1709 allows an elevation of privilege vulnerability due to how objects in memory are handled, aka "Windows Common Log File System Driver Elevation Of Privilege Vulnerability". This CVE is unique from CVE-2018-0846.
Details
Severity Base Score7.8
Impact Score5.9 Exploit Score1.8
Confidentiality ImpactHIGH Integrity ImpactHIGH
Availability ImpactHIGH Access Vector
Authentication Ease of Access