as i read in security sites, there is a dramatic increase in security issues like vulnerabilities that allow attacker to use them in bad ways. one of the newest threat that i read is vulnerability in mysql/mysql-auth.pl in the mod_authnz_external module 3.2.5 for Apache server which allow hackers to perform sql injection.
can any one explain how this threat happened and how attacker or hacker use it to start attack ?
Much prefer comments than links. most websites that i found in Google don't mention enough information.