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OWASP Code Review V2 Table of Contents

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OWASP Code Review Guide v2.0:

Forward

  1. Author - Eoin Keary
  2. Previous version to be updated:[[1]]

Content here

Code Review Guide Introduction

  1. Author - Eoin Keary
  2. Previous version to be updated:[[2]]

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What is source code review and Static Analysis

What is Code Review

  1. Author - Zyad Mghazli, Eoin Keary
  2. New Section

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Manual Review - Pros and Cons

  1. Author - Zyad Mghazli, Eoin Keary,Gary David Robinson
  2. New Section
  3. Suggestion: Benchmark of different Stataic Analysis Tools Zyad Mghazli
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Advantages of Code Review to Development Practices

  1. Author - Gary David Robinson
  2. New Section
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Why code review

Scope and Objective of secure code review

  1. Author - Ashish Rao
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We can't hack ourselves secure

  1. Author - Eoin Keary
  2. New Section
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360 Review: Coupling source code review and Testing / Hybrid Reviews

  1. Author - eoin Keary
  2. New Section
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Can static code analyzers do it all?

  1. Author - Ashish Rao
  2. New Section
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Methodology

The code review approach

  1. Author - Johanna Curiel
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Preparation and context

  1. Author - Gary David Robinson
  2. Previous version to be updated: [[3]]
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Application Threat Modeling

  1. Author - Larry Conklin
  2. Previous version to be updated: [[4]]
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Understanding Code layout/Design/Architecture

  1. Author - Open
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Understanding Business Logic

  1. Put content here

SDLC Integration

  1. Author - Larry Conklin
  2. Previous version to be updated: [[5]]
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Deployment Models

Secure deployment configurations
  1. Author -
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  1. New Section
Metrics and code review
  1. Author [email protected]
  2. Previous version to be updated: [[6]]
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Source and sink reviews
  1. Author - Open
  2. New Section
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Code review Coverage
  1. Author - Open
  2. Previous version to be updated: [[7]]
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Design Reviews
  1. Author - Ashish Rao
  • Why to review design?
    • Building security in design - secure by design principle
    • Design Areas to be reviewed
    • Common Design Flaws
  1. Put content here
A Risk based approach to code review
  1. Author - Gary David Robinson
  2. New Section
  • "Doing things right or doing the right things..."
    • "Not all bugs are equal
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Crawling code

  1. Author - Open
  2. Previous version to be updated: [[8]]
  • API of Interest:
    • Java
    • .NET
    • PHP
    • RUBY
  • Frameworks:
    • Spring
    • .NET MVC
    • Struts
    • Zend
  1. New Section
  • Searching for code in C/C++
  1. Author - Gary David Robinson
  1. Put content here

Code reviews and Compliance

  1. Author -Open
  2. Previous version to be updated: [[9]]
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Reviewing by Technical Control

Reviewing code for Authentication controls

  1. Author - Gary Robinson
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Forgot password

  1. Author Abbas Naderi, Larry Conklin
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CAPTCHA

  1. Author Larry Conklin, Joan Renchie

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Out of Band considerations

  1. Author - Gary Robinson
  2. Previous version to be updated: [[10]]
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Reviewing code Authorization weakness

  1. Author Eoin Keary .NET MVC added
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Checking authz upon every request

  1. Author - Abbas Naderi
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Reducing the attack surface

  1. Author Gary Robinson
  2. Previous version to be updated: [[11]]
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SSL/TLS Implementations

  1. Author - Eoin Keary
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Reviewing code for Session handling

  1. Author - Abbas Naderi
  2. Previous version to be updated: [[12]]
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Reviewing client side code

  1. New Section
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Javascript
  1. Author - Abbas Naderi
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JSON
  1. Author - Open
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Content Security Policy
  1. Author - Open
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"Jacking"/Framing
  1. Author - Eoin Keary
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HTML 5?
  1. Author - Open
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Browser Defenses
  1. Author - Open
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etc...

Review code for input validation

  1. Author - Open
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Regex Gotchas
  1. Author - Open
  2. New Section
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ESAPI
  1. Author - Open
  2. New Section
  3. Internal Link: [[13]]
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Microsoft Web Protection Library
  1. Author - Michael Hidalgo
  2. New Section
  3. Internal Link: [[14]]
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Reviewing code for contextual encoding

Overall approach to content encoding and anti XSS

HTML Attribute
  1. Author - Eoin Keary
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HTML Entity
  1. Author - Eoin Keary
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Javascript Parameters
  1. Author - Eoin Keary
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JQuery
  1. Author - Open
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Reviewing file and resource handling code

  1. Author - Open
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Resource Exhaustion - error handling

  1. Author - Open
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native calls
  1. Author Open
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Reviewing Logging code - Detective Security

  1. Author - Gary Robinson
  • Where to Log
  • What to log
  • What not to log
  • How to log
  1. Internal link: [[15]]
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Reviewing Error handling and Error messages

  1. Author - Gary David Robinson
  2. Previous version to be updated: [[16]]
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Reviewing Security alerts

  1. Author - Gary Robinson
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Review for active defense

  1. Author - Colin Watson
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Reviewing Secure Storage

  1. Author - Open source
  2. New Section
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Hashing & Salting - When, How and Where

Encryption
.NET
  1. Author Larry Conklin, Joan Renchie
  2. Previous version to be updated: [[17]]
  • Can we talk about key storage as well i.e. key management for encryption techniques used in the application? - Ashish Rao

Content here

Reviewing by Vulnerability

Review Code for XSS

  1. Author Examples added by Eoin Keary
  2. Previous version to be updated: [[18]]
  3. In reviewing code for XSS - we can give more patterns on "source to sink" patterns for ASP.NET wrf to difference versions and mechanisms to display data in a page - Ashish Rao
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Persistent - The Anti pattern

  1. Author
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.NET

  1. Author Johanna Curiel, Eoin Keary
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.Java

  1. Author Johanna Curiel
  2. Put content here

PHP

  1. Author Abbas Naderi
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Ruby

  1. Author Open
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Reflected - The Anti pattern

  1. Put content here

.NET

  1. Author Johanna Curiel
  2. Put content here

.Java

  1. Author Johanna Curiel
  2. Put content here

PHP

  1. Author Abbas Naderi
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Ruby

  1. Author - Open
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Stored - The Anti pattern

  1. Author - Johanna Curiel
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.NET

  1. Author Johanna Curiel
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.Java

  1. Author Johanna Curiel
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PHP

  1. Author Johanna Curiel
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Ruby

  1. Author - Johanna Curiel
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DOM XSS

  1. Author Larry Conklin
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JQuery mistakes

  1. Author
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Reviewing code for SQL Injection

  1. Author Gary Robinson
  2. Previous version to be updated: [[19]]
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PHP

  1. Author - Mennouchi Islam Azeddine
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Java

  1. Author - Johanna Curiel
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.NET

  1. Author - Open
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HQL

  1. Author - Open
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The Anti pattern

  1. Author Larry Conklin
  2. Content here

https://www.owasp.org/index.php/CRV2_AntiPattern

PHP

  1. Author -
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Java

  1. Author -
  2. => Searching for traditional SQL,JPA,JPSQL,Criteria,...
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.NET

  1. Author Open
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Ruby

  1. Author - Open
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Cold Fusion

  1. Author - Open
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Reviewing code for CSRF Issues

  1. Author Abbas Naderi
  2. Previous version to be updated: [[20]]
  3. This page needs to be deleted. Put content here

(This task has been deleted) Transactional logic / Non idempotent functions / State Changing Functions

  1. Put content here

Reviewing code for poor logic /Business logic/Complex authorization

  1. Author - Open
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Reviewing Secure Communications

.NET Config

  1. Author Johanna Curiel, Renchie Joan
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Spring Config

  1. Author - Open
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HTTP Headers

  1. Author Gary Robinson
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Tech-Stack pitfalls

  1. Author Open
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Framework specific Issues

Spring

  1. Author - Open
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Struts

  1. Author - Open
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Drupal

  1. Author Open
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Ruby on Rails

  1. Author - Open
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Django

  1. Author Open
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.NET Security / MVC

  1. Author Johanna Curiel, Eoin Keary
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Security in ASP.NET applications

  1. Author Johanna Curiel
  2. Put content here
Strongly Named Assemblies
  1. Author Johanna Curiel, Larry Conklin
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Round Tripping
  1. Author - Open
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How to prevent Round tripping
  1. Author - Open
  2. Author Johanna Curiel
  3. Put content here
Setting the right Configurations
  1. Author Johanna Curiel
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Authentication Options
  1. Author Johanna Curiel
  2. Put content here
Code Review for Managed Code - .Net 1.0 and up
  1. Author Johanna Curiel
  2. Put content here
Using OWASP Top 10 as your guideline
  1. Author Johanna Curiel
  2. Put content here
Code review for Unsafe Code (C#)
  1. Author Johanna Curiel
  2. Put content here

PHP Specific Issues

  1. Author Open
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Classic ASP

  1. Author Johanna Curiel
  2. Put content here

C#

  1. Author Open
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C/C++

  1. Author Open
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Objective C

  1. Author Open
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Java

  1. Author Open
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Android

  1. Author Open
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Coldfusion

  1. Author Open
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CodeIgniter

  1. Author Open
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Security code review for Agile development

  1. Author Carlos Pantelides
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Code Review for Backdoors

  1. Author Yiannis Pavlosoglou

The review of a piece of source code for backdoors has one excruciating difference to a traditional source code review: The fact that someone with 'commit' or 'write' access to the source code repository has malicious intentions spanning well beyond their current developer remit. Because of this difference, a code review for backdoors is often seen as a very specialised review and can sometimes be considered not a code review per say.

A traditional code review has the objective of determining if a vulnerability is present within the code, further to this if the vulnerability is exploitable and under what conditions. A code review for backdoors has the objective to determine if a certain portion of the codebase is carrying code that is unnecessary for the logic and implementation of the use cases it serves.

Further to this, the reviewer, looks for the trigger points of that logic. Typical examples include a branch statement going off to a part of assembly or obfuscated code. The reviewer is looking for patterns of abnormality in terms of code segments that would not be expected to be present under normal conditions.

An excellent introduction into how to look for rootkits in the Java programming language can be found here. In this paper J. Williams covers a variety of backdoor examples including file system access through a web server, as well as time based attacks involving a key aspect of malicious functionality been made available after a certain amount of time. Such examples form the foundation of what any reviewer for back doors should try to automate, regardless of the language in which the review is taking place.

Code Review Tools

https://www.owasp.org/index.php/CRV2_CodeReviewTools