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.
It can be used to overwrite files using a specially crafted SMBIOS file that can be read as a memory device by dmidecode. Generate the file with dmiwrite and upload it to the target.
--dump-bin, will cause dmidecode to write the payload to the destination specified, prepended with 32 null bytes.
--no-sysfs, if the target system is using an older version of dmidecode, you may need to omit the option.
echo "DATA" > $TF
./dmiwrite $TF x.dmi
sudo dmidecode --no-sysfs -d x.dmi --dump-bin "$LFILE"