Rule Category

OS-WINDOWS -- Snort has detected traffic targeting vulnerabilities in a Windows-based operating system. This does not include browser traffic or other software on the OS, but attacks against the OS itself. (such as?)

Alert Message

OS-WINDOWS Microsoft Windows use after free win32kbase.sys privilege escalation attempt

Rule Explanation

This event is generated when an attacker attempts to exploit a user after free vulnerability present in the win32kbase.sys driver. Impact: Attempted Administrative Privilege Gain Details: Rule checks for an attempt to exploit a user after free vulnerability present in the win32kbase.sys driver. 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-2018-0756
The Windows kernel in Windows 10 Gold, 1511, 1607, 1703 and 1709, Windows Server 2016 and Windows Server, version 1709 allows an elevation of privilege vulnerability due to the way objects are handled in memory, aka "Windows Kernel Elevation of Privilege Vulnerability". This CVE is unique from CVE-2018-0742, CVE-2018-0809, CVE-2018-0820 and CVE-2018-0843.
Details
Severity Base Score7.8
Impact Score5.9 Exploit Score1.8
Confidentiality ImpactHIGH Integrity ImpactHIGH
Availability ImpactHIGH Access Vector
Authentication Ease of Access