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 ExifTool DjVu metadata command injection injection attempt

Rule Explanation

This rule looks for system commands in the DjVu file annotations.

What To Look For

This rule will alert when a DjVu file download which exploits a command injection vulnerability in ExifTool is detected.

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

Command Injection

Command Injection attacks target applications that allow unsafe user-supplied input. Attackers transmit this input via forms, cookies, HTTP headers, etc. and exploit the applications permissions to execute system commands without injecting code.

CVE Additional Information

This product uses data from the NVD API but is not endorsed or certified by the NVD.
CVE-2021-22204
Loading description

MITRE ATT&CK Framework

Tactic: Initial Access

Technique: Spearphishing Attachment

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