December 2002
Intermediate to advanced
496 pages
9h 40m
English
book
Open Source Web Development with LAMP: Using Linux, Apache, MySQL, Perl, and PHP
by James Lee, Brent Ware
Content preview from Open Source Web Development with LAMP: Using Linux, Apache, MySQL, Perl, and PHP
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7.9. CGI Security Considerations
Although CGI programming is not inherently insecure, insecure CGI programs are easy to write. In this section, we discuss some of the most common security issues with CGI programs. If you heed these suggestions, you will be a long way toward being secure, or at least you will not be an easy target.
7.9.1. Avoid Shipped and Downloaded CGI Programs
We mentioned this before in Chapter 3, but it deserves mention again: Do not trust preshipped CGIs. Before developing your own CGI scripts, remove all the ones you find in cgi-bin, or if you want to keep them around, change their permissions so that they are not executable.
And never download CGI programs from source code web sites. Many contain serious security problems. ...
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