Exercises, examples and other material relating to training module P609. This topic is presented on public course
Perl Extra
Tainted Perl
Articles and tips on this subject | updated |
2688 | Security considerations in programming - what do we teach? Many moons ago, I wrote and presented a security course - and ever since that time I have been acutely aware of the need to consider security in every aspect of system design, program writing and maintenance. And these days - with many of our programs "exposed" to people to run from remote places via ... | 2010-03-25 |
2238 | Handling nasty characters - Perl, PHP, Python, Tcl, Lua Are your writing or maintaining a web based application that uses forms? If so, you have better be aware of some of the nasty characters that are around!
The < character, when echoed back from a users's input 'unchallenged', may form the start of a tag. So that in a relatively benign case, a user ... | 2009-06-21 |
426 | Robust checking of data entered by users 10 steps to testing the bullet proofing user inputs or how to avoid being caught by nasties when your script goes live!
1. Test it works with intended entries. It's not going to be much good if it falls over when someone entered a valid piece of data!
2. Test it works (fails correctly) with erroneous ... | 2008-05-17 |
Pictures
Preventing injection attacks and other security lapses
Background information
Some modules are
available for download as a sample of our material or under an
Open Training Notes License for free download from
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Topics covered in this module
Tainted Perl.
How does tainting work?.
How do I tell if a scalar is tainted?.
Untainting information.
Firewalls - use and abuse.
False email addresses.
Passwords and credit cards.
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