Kerberos FTP client allows remote FTP sites to execute arbitrary code via a pipe (|) character in a filename that is retrieved by the client

Affected versions

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

• mandrakesoft mandrake linux8.1
• mandrakesoft mandrake linux8.2
• mandrakesoft mandrake linux9.0
• mandrakesoft mandrake multi network firewall8.2
• mit kerberos ftp clientall versions
• redhat linux6.2
• redhat linux7.0
• redhat linux7.1
• redhat linux7.2
• redhat linux7.3
• redhat linux8.0

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.