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.

Alert Message

OS-WINDOWS Microsoft Windows win32k privilege escalation attempt

Rule Explanation

This rule looks for improper behavior using the 'NtGdiSelectFont' and 'NtGdiGetStringBitmapW' system calls.

What To Look For

This rule alerts when a Microsoft Windows win32k NtGdi privilege escalation attempt is detected. This could lead to arbitrary code execution with a user with higher permissions.

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

No rule groups

CVE

Additional Links

Rule Vulnerability

CVE Additional Information

This product uses data from the NVD API but is not endorsed or certified by the NVD.
CVE-2020-0877
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MITRE ATT&CK Framework

Tactic: Privilege Escalation

Technique: Exploitation for Privilege Escalation

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