Rule Category

SERVER-WEBAPP -- Snort has detected traffic exploiting vulnerabilities in web based applications on servers.

Alert Message

SERVER-WEBAPP Zyxel NAS devices command injection attempt

Rule Explanation

The rule looks for metacharacters typically used to perform command injection in the vulnerable parameter.

What To Look For

This rule alerts on attempts to exploit a command injection vulnerability in Zyxel NAS devices. Mirai variant Mukashi is known to exploit this vulnerability to infect vulnerable Zyxel NAS devices.

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-2020-9054
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MITRE ATT&CK Framework

Tactic: Execution

Technique: Execution through API

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