« Previous 1 2
Regular expression security
Pass the Test
Conclusions
Regular expressions are useful for checking user input and are deployed in web applications and on firewalls or proxy servers. However, they also have pitfalls that are not immediately obvious. For this reason, you should always test the regular expressions you use intensively, because the damage potential is not always apparent. If you have inadvertently developed a vulnerable regular expression, sometimes simple adjustments or tolerable inaccuracy in the recognition process can make a broken or unsafe regular expression work safely.
« Previous 1 2
Buy this article as PDF
(incl. VAT)
Buy ADMIN Magazine
US / Canada
UK / Australia
Related content
-
Regular expressions and metacharacters in PowerShell
Almost all programming and scripting languages allow the use of regular expressions, but many professionals still believe regex is a relic from ancient times. With specific examples, we show how useful and meaningful regex can be in PowerShell. - A Brief Guide to Regular Expressions
-
High-Performance Python 3
Python finally has interoperable tools for programming the GPU – with or without CUDA.
-
Shell practice: Introduction to the sed stream editor
With sed, you can edit text data without an interactive user interface, using pipes or input redirection. Sed lets you execute extensive editing commands on a single line. -
IT automation with SaltStack
SaltStack is a fast and reliable modular toolbox written in Python that contains ready-made modules for many configuration management purposes.