No language exists yet that is aware of all security issues. No matter what language, library, framework, toolset you use, you need to be aware of multiple vectors of attack.
Claiming that some languages solve these problems for you, for free, is disingenuous.
I pointed out that languages with safe string handling and memory management have a higher security baseline. As in, what you start with, for "free".
Achieving comparable string and memory security in C/C++ is an expense. You must take active steps to prevent those exploits; and even then human error means that you will have a higher risk than the "free baseline" languages.
