Scripts Versus Programs
Shell scripts, Perl programs, and C executables are the most common forms that a CGI script takes, and each has advantages and disadvantages when security is taken into account. No single language is the best; depending on other considerations such as speed and reuse, each has a place. Nonetheless, there are some common elements to most server-side programs, including the following:
Although shell CGI programs are often the easiest to write, it can be difficult to fully control them because they usually do most of their work by executing other, external programs. This can lead to several possible pitfalls because your CGI script instantly inherits any of the security problems that those called programs have. The common ...
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