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 Type 1 font stack overflow attempt

Rule Explanation

Using a malicious font an attacker is able to trigger an out-of-bounds memory corruption in the Windows ATFMD font kernel driver. By triggering the vulnerability an attacker may be able to achieve remote code execution.

What To Look For

Rule alerts when an attempt is made to trigger an out-of-bounds memory corruption in the Windows font kernel driver using a malicious font file.

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

MITRE ATT&CK Framework

Tactic: Execution

Technique: User Execution

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

Additional Links

Rule Vulnerability

CVE Additional Information