Secure Coding Cheat Sheet

IMPORTANT

The Cheat Sheet Series project has been moved to GitHub!

An open discussion is pending about to exclude or not this cheat sheet of the V2 of the project.

Introduction

The goal of this document is to create high level guideline for secure coding practices. The goal is to keep the overall size of the document condensed and easy to digest. Individuals seeking addition information on the specific areas should refer to the included links to learn more.

How To Use This Document

The information listed below are generally acceptable secure coding practices; however, it is recommend that organizations consider this a base template and update individual sections with secure coding recommendations specific to the organization's policies and risk tolerance.

Secure Coding Policy

Always maintain a secure coding policy. List down the activities that are related to maintenance of secure coding standards (would these standards be technology specific or technology agnostic), feedback of code review output to training, input data validation, output data validation etc

Why should you be having a secure coding policy? It helps in maintaining consistency across organisation and helps in vertical and horizontal scaling of usage of standards for web development projects.

User Authentication

Please see https://www.owasp.org/index.php/Authentication_Cheat_Sheet#Utilize_Multi-Factor_Authentication

Password Complexity

Please see https://www.owasp.org/index.php/Authentication_Cheat_Sheet#Implement_Proper_Password_Strength_Controls.

Session Management

Please see https://www.owasp.org/index.php/Session_Management_Cheat_Sheet

Access Control

Please see https://www.owasp.org/index.php/Access_Control_Cheat_Sheet

Input Data Validation

Please see https://www.owasp.org/index.php/Input_Validation_Cheat_Sheet

Output Encoding

Please see https://www.owasp.org/index.php/Input_Validation_Cheat_Sheet#Output_Encoding

Secure Transmission / Network Layer security

Please see https://www.owasp.org/index.php/Transport_Layer_Protection_Cheat_Sheet#Benefits

File Uploads

Please see https://www.owasp.org/index.php/Input_Validation_Cheat_Sheet#File_Uploads

Error Handling

Please see https://www.owasp.org/index.php/Input_Validation_Cheat_Sheet#Error_Handling

Logging and Auditing

Please see https://www.owasp.org/index.php/Logging_Cheat_Sheet

Cryptography

Please see https://www.owasp.org/index.php/Cryptographic_Storage_Cheat_Sheet

Cookie Management

Please see https://www.owasp.org/index.php/Session_Management_Cheat_Sheet#Cookies

Unvalidated Redirects and Forwards Cheat Sheet

Please see https://www.owasp.org/index.php/Unvalidated_Redirects_and_Forwards_Cheat_Sheet

SQL Injection

Please see https://www.owasp.org/index.php/SQL_Injection_Prevention_Cheat_Sheet

Cross Site Scripting

Please see https://www.owasp.org/index.php/DOM_based_XSS_Prevention_Cheat_Sheet

Please see https://www.owasp.org/index.php/XSS_(Cross_Site_Scripting)_Prevention_Cheat_Sheet

Please see https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet

Cross Site Request Forgery

Please see https://www.owasp.org/index.php/Cross-Site_Request_Forgery_(CSRF)_Prevention_Cheat_Sheet

Preventing Malicious Site Framing (ClickJacking)

Please see https://www.owasp.org/index.php/Clickjacking_Defense_Cheat_Sheet#Defending_with_X-Frame-Options_Response_Headers

Insecure Direct Object references

Please see https://www.owasp.org/index.php/Insecure_Direct_Object_Reference_Prevention_Cheat_Sheet

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