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 Win32k driver privilege escalation attempt

Rule Explanation

This rule looks for executeables known to exploit CVE-2022-21882.

What To Look For

This rule alerts on a specially crafted executable designed to exploit CVE-2022-21882, a privilege escalation vulnerability in Microsoft Windows.

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

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

CVE

Additional Links

Rule Vulnerability

Escalation of Privilege

An Escalation of Privilege (EOP) attack is any attack method that results in a user or application gaining permissions to access resources they normally would not have access to.

CVE Additional Information

CVE-2022-21882
Win32k Elevation of Privilege Vulnerability. This CVE ID is unique from CVE-2022-21887.
Details
Severity Base Score7.8
Impact Score5.9 Exploit Score1.8
Confidentiality ImpactHIGH Integrity ImpactHIGH
Availability ImpactHIGH Attack VectorLOCAL
ScopeUNCHANGED User InteractionNONE
Authentication Ease of AccessLOW
Privileges RequiredLOW