The Buffalo WHR-1166DHP 1.60 and earlier, WSR-600DHP 1.60 and earlier, WHR-600D 1.60 and earlier, WHR-300HP2 1.60 and earlier, WMR-300 1.60

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• buffalotech bhr-4grv2 firmwareup to 1.04 inclusive
• buffalotech wex-300 firmwareup to 1.60 inclusive
• buffalotech whr-1166dhp firmwareup to 1.60 inclusive
• buffalotech whr-300hp2 firmwareup to 1.60 inclusive
• buffalotech whr-600d firmwareup to 1.60 inclusive
• buffalotech wmr-300 firmwareup to 1.60 inclusive
• buffalotech wsr-600dhp firmwareup to 1.60 inclusive

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

User input is inserted as text into a shell command. The shell may interpret special characters in the input as part of the command.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1const host = req.body.host;2exec("ping -c 1 " + host, onResult);

1const host = req.body.host;2if (!/^[a-z0-9.-]{1,253}$/i.test(host)) return res.sendStatus(400);3execFile("ping", ["-c", "1", host], onResult);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.