Table of Content
Web Application Firewall
possible security measures of WAF
Data Validation Strategies
Varieties Of Input
Reject Known Bad
Accept Known Good
Sanitization Safe Data Handling
Semantic Checks
Introduction SQL Injection
A SQL injection attack consists of insertion or "injection" of a SQL query via the input data from the client to the application
SQL Injection
Blind SQL Injection
Authorization is the process of giving someone permission to do or have something.
Table of Content
Introduction Authorization
Common Attacker Testing Authentication
Strategies For Strong Authentication
Access Control
The document discusses application threat modeling for a college library website. It describes decomposing the application into external dependencies, entry points, assets, and trust levels. It then covers determining and ranking threats using STRIDE and ASF categorizations. The document outlines identifying security controls and countermeasures to address vulnerabilities. It provides steps for threat analysis and defining mitigation strategies.
Table Of Content
The OWASP Top Ten
Invalidated Redirect and Forwards
Security Misconfiguration
Application Fingerprint
Error handling And Logging
Noise
PHP Guidelines
Application Security Part 1 Threat Defense In Client Server Applications ...Greg Sohl
This presentation grew out of my experience with testing client-server applications (web, disconnected thin client, etc.) for security issues. The knowledge was gained through research and experience. I gave the presentation to the Cedar Rapids .NET User Group (CRineta.org) in 2006.
Table of Content
Web Application Firewall
possible security measures of WAF
Data Validation Strategies
Varieties Of Input
Reject Known Bad
Accept Known Good
Sanitization Safe Data Handling
Semantic Checks
Introduction SQL Injection
A SQL injection attack consists of insertion or "injection" of a SQL query via the input data from the client to the application
SQL Injection
Blind SQL Injection
Authorization is the process of giving someone permission to do or have something.
Table of Content
Introduction Authorization
Common Attacker Testing Authentication
Strategies For Strong Authentication
Access Control
The document discusses application threat modeling for a college library website. It describes decomposing the application into external dependencies, entry points, assets, and trust levels. It then covers determining and ranking threats using STRIDE and ASF categorizations. The document outlines identifying security controls and countermeasures to address vulnerabilities. It provides steps for threat analysis and defining mitigation strategies.
Table Of Content
The OWASP Top Ten
Invalidated Redirect and Forwards
Security Misconfiguration
Application Fingerprint
Error handling And Logging
Noise
PHP Guidelines
Application Security Part 1 Threat Defense In Client Server Applications ...Greg Sohl
This presentation grew out of my experience with testing client-server applications (web, disconnected thin client, etc.) for security issues. The knowledge was gained through research and experience. I gave the presentation to the Cedar Rapids .NET User Group (CRineta.org) in 2006.
OWASP Secure Coding Practices - Quick Reference GuideLudovic Petit
This document provides a quick reference guide for secure coding practices. It contains a checklist of over 50 secure coding practices organized into categories such as input validation, authentication, session management, and access control. The introduction provides an overview of why secure coding is important and recommends establishing secure development processes and training developers. It defines key security concepts like threats, vulnerabilities, and risks. The goal is to help development teams integrate security practices into the software development lifecycle to mitigate common vulnerabilities.
The document discusses web application security and provides an overview of common vulnerabilities like SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF). It summarizes the OWASP Top 10 list of most critical web app security risks, including injection flaws, broken authentication, sensitive data exposure, and more. The document also offers best practices for developing more securely, like using prepared statements, validating and sanitizing input, and implementing authentication and session management properly.
Owasp Top 10 And Security Flaw Root CausesMarco Morana
The document discusses root causes of common web application security flaws and vulnerabilities known as the OWASP Top 10. It provides an overview of tactical and strategic approaches to address these issues, including threat modeling, mapping vulnerabilities to application architecture, and implementing security by design principles. Specific guidelines are given for securely handling authentication, authorization, cryptography, sessions, input validation, errors and logging.
The document discusses developing secure web applications. It proposes using input validation, encryption of sensitive data, preventing SQL injection attacks, and collecting access logs. Input is validated by only allowing a whitelist of known good characters. Sensitive data like passwords are encrypted using an encryption algorithm. SQL injection is prevented by replacing malicious strings with blank spaces. Access logs record client IP addresses and page requests to trace activity and block malicious IPs. The techniques aim to make web applications and data more secure against common attacks like SQL injection, brute force, and denial of service.
The document discusses data validation strategies for web applications. It covers validating user input to prevent SQL injection attacks. Various approaches to input validation are described, including rejecting known bad inputs, accepting known good inputs, sanitization, semantic checks and safe data handling. SQL injection is introduced and countermeasures like prepared statements and input escaping are recommended. The importance of the principle of least privilege is also emphasized.
Introduction to Web Application Penetration TestingAnurag Srivastava
Web Application Pentesting
* Process to check and penetrate the security of a web application or a website
* process involves an active analysis of the application for any weaknesses, technical flaws, or vulnerabilities
* Any security issues that are found will be presented to the system owner, together with an assessment of the impact, a proposal for mitigation or a technical solution.
A7 Missing Function Level Access Controlstevil1224
Missing function level access control vulnerabilities allow attackers to access privileged functions by manipulating URLs or parameters without proper verification of user privileges. These vulnerabilities are easy for attackers to exploit and can have severe impacts if they expose private user data or administrative controls. Application developers can prevent such vulnerabilities by default denying access, enforcing authorization at the controller level, and avoiding hard-coded permissions.
This document provides an agenda for a presentation on comprehensive web application attacks. The presenter, Ahmed Sherif, has over 5 years of experience in penetration testing and web application security. The agenda includes an overview of security in corporations and web technologies, the OWASP security testing methodology, common web attacks like XSS and SQL injection, and a demo of these attacks. The goal is to educate attendees on how to identify and address vulnerabilities in web applications.
The document provides an overview of the top 5 vulnerabilities according to the OWASP Top 10 list - Injection, Broken Authentication and Session Management, Cross-Site Scripting (XSS), Insecure Direct Object References, and Security Misconfiguration. For each vulnerability, the document defines the vulnerability, provides examples, and lists recommendations for mitigating the risk.
Owasp Top 10 - Owasp Pune Chapter - January 2008abhijitapatil
The document discusses various cybersecurity topics including vulnerabilities, threats, attacks, and countermeasures. It provides an overview of the Open Web Application Security Project (OWASP) which focuses on improving application security. It also summarizes common web vulnerabilities like cross-site scripting (XSS), SQL injection, buffer overflows, and cross-site request forgery (CSRF). Recommendations are given to prevent these vulnerabilities.
This document discusses security vulnerabilities and the OWASP Top 10. It provides background on why security is important when developing software, costs of data breaches, and an overview of the OWASP organization and Top 10 vulnerabilities. The Top 10 vulnerabilities discussed in more detail include injection, broken authentication and session management, cross-site scripting, insecure direct object references, security misconfiguration, sensitive data exposure, missing function level access control, cross-site request forgery, using components with known vulnerabilities, and unvalidated redirects/forwards. Examples are given for each vulnerability.
The document discusses several common web application vulnerabilities and how attackers exploit them as well as recommendations for programmers to prevent exploits. It covers vulnerabilities like cross-site scripting, SQL injection, improper error handling, HTTP response splitting, and insecure session management. For each issue, it provides examples of vulnerable code, how attackers can take advantage, and techniques programmers can use to secure the code like input validation, output encoding, parameterized queries, and secure session IDs. The goal is to help both attackers and programmers understand each other's perspectives on web application security issues.
Cyber attacks are a real and growing threat to businesses and an increasing number of attacks take place at application layer. The best defence against is to develop applications where security is incorporated as part of the software development lifecycle.
The OWASP Top 10 Proactive Controls project is designed to integrate security in the software development lifecycle. In this special presentation for PHPNW, based on v2.0 released this year, you will learn how to incorporate security into your software projects.
Recommended to all developers who want to learn the security techniques that can help them build more secure applications.
Web application attacks can take many forms, including cross-site scripting (XSS), SQL injection, parameter tampering, command injection, session management issues, cookie poisoning, directory traversal, cross-site request forgery, and buffer overflows. XSS is a vulnerability that allows malicious JavaScript code to be injected and run in a user's browser, potentially accessing data. SQL injection involves inserting SQL commands into a database query to gain unauthorized access. Parameter tampering modifies URL parameters to change expected behavior.
Top 10 Web Security Vulnerabilities (OWASP Top 10)Brian Huff
The document summarizes the top 10 security vulnerabilities in web applications according to the Open Web Application Security Project (OWASP). These include injection flaws, cross-site scripting, broken authentication and session management, insecure direct object references, cross-site request forgery, security misconfiguration, insecure cryptographic storage, failure to restrict URL access, insufficient transport layer protection, and unvalidated redirects and forwards. Countermeasures for each vulnerability are also provided.
Good Secure Development Practices Presented By: Bil Corry lasso.pro Education Project. It recommends validating all user input, distrusting even your own requests, and taking a layered approach to validation, enforcement of business rules, and authentication. Some specific best practices include implementing positive authentication, principle of least privilege, centralized authorization routines, separating admin and user access, and ensuring error handling fails safely.
Thank you for the information. While password cracking can be done for educational purposes with authorization, doing so against systems without permission would be unethical. Let's please focus our discussion on how to strengthen authentication and security in a responsible way.
OWASP Secure Coding Practices - Quick Reference GuideLudovic Petit
This document provides a quick reference guide for secure coding practices. It contains a checklist of over 50 secure coding practices organized into categories such as input validation, authentication, session management, and access control. The introduction provides an overview of why secure coding is important and recommends establishing secure development processes and training developers. It defines key security concepts like threats, vulnerabilities, and risks. The goal is to help development teams integrate security practices into the software development lifecycle to mitigate common vulnerabilities.
The document discusses web application security and provides an overview of common vulnerabilities like SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF). It summarizes the OWASP Top 10 list of most critical web app security risks, including injection flaws, broken authentication, sensitive data exposure, and more. The document also offers best practices for developing more securely, like using prepared statements, validating and sanitizing input, and implementing authentication and session management properly.
Owasp Top 10 And Security Flaw Root CausesMarco Morana
The document discusses root causes of common web application security flaws and vulnerabilities known as the OWASP Top 10. It provides an overview of tactical and strategic approaches to address these issues, including threat modeling, mapping vulnerabilities to application architecture, and implementing security by design principles. Specific guidelines are given for securely handling authentication, authorization, cryptography, sessions, input validation, errors and logging.
The document discusses developing secure web applications. It proposes using input validation, encryption of sensitive data, preventing SQL injection attacks, and collecting access logs. Input is validated by only allowing a whitelist of known good characters. Sensitive data like passwords are encrypted using an encryption algorithm. SQL injection is prevented by replacing malicious strings with blank spaces. Access logs record client IP addresses and page requests to trace activity and block malicious IPs. The techniques aim to make web applications and data more secure against common attacks like SQL injection, brute force, and denial of service.
The document discusses data validation strategies for web applications. It covers validating user input to prevent SQL injection attacks. Various approaches to input validation are described, including rejecting known bad inputs, accepting known good inputs, sanitization, semantic checks and safe data handling. SQL injection is introduced and countermeasures like prepared statements and input escaping are recommended. The importance of the principle of least privilege is also emphasized.
Introduction to Web Application Penetration TestingAnurag Srivastava
Web Application Pentesting
* Process to check and penetrate the security of a web application or a website
* process involves an active analysis of the application for any weaknesses, technical flaws, or vulnerabilities
* Any security issues that are found will be presented to the system owner, together with an assessment of the impact, a proposal for mitigation or a technical solution.
A7 Missing Function Level Access Controlstevil1224
Missing function level access control vulnerabilities allow attackers to access privileged functions by manipulating URLs or parameters without proper verification of user privileges. These vulnerabilities are easy for attackers to exploit and can have severe impacts if they expose private user data or administrative controls. Application developers can prevent such vulnerabilities by default denying access, enforcing authorization at the controller level, and avoiding hard-coded permissions.
This document provides an agenda for a presentation on comprehensive web application attacks. The presenter, Ahmed Sherif, has over 5 years of experience in penetration testing and web application security. The agenda includes an overview of security in corporations and web technologies, the OWASP security testing methodology, common web attacks like XSS and SQL injection, and a demo of these attacks. The goal is to educate attendees on how to identify and address vulnerabilities in web applications.
The document provides an overview of the top 5 vulnerabilities according to the OWASP Top 10 list - Injection, Broken Authentication and Session Management, Cross-Site Scripting (XSS), Insecure Direct Object References, and Security Misconfiguration. For each vulnerability, the document defines the vulnerability, provides examples, and lists recommendations for mitigating the risk.
Owasp Top 10 - Owasp Pune Chapter - January 2008abhijitapatil
The document discusses various cybersecurity topics including vulnerabilities, threats, attacks, and countermeasures. It provides an overview of the Open Web Application Security Project (OWASP) which focuses on improving application security. It also summarizes common web vulnerabilities like cross-site scripting (XSS), SQL injection, buffer overflows, and cross-site request forgery (CSRF). Recommendations are given to prevent these vulnerabilities.
This document discusses security vulnerabilities and the OWASP Top 10. It provides background on why security is important when developing software, costs of data breaches, and an overview of the OWASP organization and Top 10 vulnerabilities. The Top 10 vulnerabilities discussed in more detail include injection, broken authentication and session management, cross-site scripting, insecure direct object references, security misconfiguration, sensitive data exposure, missing function level access control, cross-site request forgery, using components with known vulnerabilities, and unvalidated redirects/forwards. Examples are given for each vulnerability.
The document discusses several common web application vulnerabilities and how attackers exploit them as well as recommendations for programmers to prevent exploits. It covers vulnerabilities like cross-site scripting, SQL injection, improper error handling, HTTP response splitting, and insecure session management. For each issue, it provides examples of vulnerable code, how attackers can take advantage, and techniques programmers can use to secure the code like input validation, output encoding, parameterized queries, and secure session IDs. The goal is to help both attackers and programmers understand each other's perspectives on web application security issues.
Cyber attacks are a real and growing threat to businesses and an increasing number of attacks take place at application layer. The best defence against is to develop applications where security is incorporated as part of the software development lifecycle.
The OWASP Top 10 Proactive Controls project is designed to integrate security in the software development lifecycle. In this special presentation for PHPNW, based on v2.0 released this year, you will learn how to incorporate security into your software projects.
Recommended to all developers who want to learn the security techniques that can help them build more secure applications.
Web application attacks can take many forms, including cross-site scripting (XSS), SQL injection, parameter tampering, command injection, session management issues, cookie poisoning, directory traversal, cross-site request forgery, and buffer overflows. XSS is a vulnerability that allows malicious JavaScript code to be injected and run in a user's browser, potentially accessing data. SQL injection involves inserting SQL commands into a database query to gain unauthorized access. Parameter tampering modifies URL parameters to change expected behavior.
Top 10 Web Security Vulnerabilities (OWASP Top 10)Brian Huff
The document summarizes the top 10 security vulnerabilities in web applications according to the Open Web Application Security Project (OWASP). These include injection flaws, cross-site scripting, broken authentication and session management, insecure direct object references, cross-site request forgery, security misconfiguration, insecure cryptographic storage, failure to restrict URL access, insufficient transport layer protection, and unvalidated redirects and forwards. Countermeasures for each vulnerability are also provided.
Good Secure Development Practices Presented By: Bil Corry lasso.pro Education Project. It recommends validating all user input, distrusting even your own requests, and taking a layered approach to validation, enforcement of business rules, and authentication. Some specific best practices include implementing positive authentication, principle of least privilege, centralized authorization routines, separating admin and user access, and ensuring error handling fails safely.
Thank you for the information. While password cracking can be done for educational purposes with authorization, doing so against systems without permission would be unethical. Let's please focus our discussion on how to strengthen authentication and security in a responsible way.
Mobile Application Security - Broken Authentication & ManagementBarrel Software
This document discusses broken authentication and session management attacks. It defines authentication and session management, and explains the risks of broken implementations which can undermine controls and lead to privacy violations and identity theft. Several examples of attacks are described in detail, including brute force attacks, session hijacking, replay attacks, and issues with insufficient session expiration. General guidelines for prevention are outlined, such as unique user IDs, password complexity policies, secure communication, credential storage best practices, and proper logout functionality.
The document provides an overview of the top 5 vulnerabilities according to the OWASP Top 10 list - Injection, Broken Authentication and Session Management, Cross-Site Scripting (XSS), Insecure Direct Object References, and Security Misconfiguration. For each vulnerability, the document defines the vulnerability, provides examples, and lists recommendations for mitigating the risk.
The document provides steps to mitigate the top 5 OWASP vulnerabilities in 2013: 1) SQL injection, 2) Broken authentication and session management, 3) XSS, 4) CSRF, and 5) Security misconfiguration. For each vulnerability, it lists specific measures like input validation, parameterized queries, strong passwords, CSRF tokens, disabling directory listings, changing default settings, and avoiding server information disclosure. Overall, the steps focus on proper validation, encryption, access control, and configuration to prevent exploits of common web vulnerabilities.
PCI security requirements secure coding and code review 2014Haitham Raik
The document discusses security best practices for preventing common web application vulnerabilities like injection and cross-site scripting (XSS) according to the OWASP Top 10. It provides examples of SQL, XPath, and reflected XSS vulnerabilities and recommendations for using prepared statements, input validation, and output encoding to mitigate these risks. The document also covers session management issues and recommends using secure attributes for cookies and invalidating sessions on events to prevent session hijacking attacks.
The document discusses authentication, authorization, and accounting (the three As) as a leading model for access control. It describes authentication as identifying users, usually with a username and password. Authorization gives users access to resources based on their identity. Accounting (also called auditing) tracks user activity like time spent and services accessed. The document provides details on different authentication methods like passwords, PINs, smart cards, and digital certificates. It emphasizes the importance of strong passwords and changing them regularly.
Module 13 (web based password cracking techniques)Wail Hassan
Password cracking doesn't have to involve fancy tools, but it's a fairly tedious process. If the target doesn't lock you out after a specific number of tries, you can spend an infinite amount of time trying every combination of alphanumeric characters. It's just a question of time and bandwidth before you break into a system.
The most common passwords found are password, root, administrator, admin, operator, demo, test, webmaster, backup, guest, trial, member, private, beta, [company_name] or [known_username].
Web Application Security 101 - 06 AuthenticationWebsecurify
In part 6 of Web Application Security 101 we will look into vulnerabilities effecting the authentication system. You will learn about password bruteforce attacks, cracking captures, bypassing the login system and more.
An Enhanced Security System for Web Authentication IJMER
Web authentication has low security in these days. Todays, For Authentication purpose,
Textual passwords are commonly used; however, users do not follow their requirements. Users tend to
choose meaningful words from dictionaries, which make textual passwords easy tobreak and vulnerable
to dictionary or brute force attacks. Also, Textual passwords can be identified by 3rd
party software’s.
Many available graphicalpasswords have a password space that is less than or equal to the textual
passwordspace. Smart cards or tokens can be stolen.There are so many biometric authentications have
been proposed; however, users tend to resistusing biometrics because of their intrusiveness and the effect
on their privacy. Moreover,biometrics cannot be evoked.In this paper, we present and evaluate our
contribution,i.e., the OTP and 3-D password. A one-time password (OTP) is a password that isvalid for
only one login session or transaction. OTPs avoid a number of shortcomingsthat are associated with
traditional (static) passwords. The most important shortcoming that is addressed by OTPs is that, in
contrast to static passwords, they are not vulnerable to replay attacks. It means that a potential intruder
who manages to record an OTPthat was already used to log into a service or to conduct a transaction
will not be able toabuse it, since it will be no longer valid. The 3-D password is a multifactor
authenticationscheme. To be authenticated, we present a 3-D virtual environment where the
usernavigates and interacts with various objects. The sequence of actions and interactionstoward the
objects inside the 3-D environment constructs the user’s 3-D password.
Application and Website Security -- Fundamental EditionDaniel Owens
The document provides an agenda for a course on application and website security. The agenda covers common input validation flaws like SQL injection and cross-site scripting, access control flaws like session hijacking, encryption flaws, security tools, and concludes with additional resources for further information. The document uses examples to demonstrate various security vulnerabilities and how they can be exploited.
This document summarizes a research paper on M-Pass, a proposed user authentication protocol that aims to prevent password stealing and reuse attacks. M-Pass leverages cell phones and SMS to authenticate users on untrusted devices without requiring them to enter passwords. It involves a registration phase where users register with a website and encrypt a password with their phone number. For login, users provide their username and long-term phone password, and the website generates a one-time password using a secret credential. The protocol aims to eliminate the need to remember multiple passwords by using the phone for authentication across websites. Evaluation shows registration and login times average around 4 and 3.5 minutes respectively. The researchers conclude M-Pass can prevent password stealing and reuse
Iaetsd fpga implementation of rf technology and biometric authenticationIaetsd Iaetsd
This document proposes using FPGA, RF technology, and face recognition for three-factor authentication in ATM security. The system uses an RF transmitter and receiver for the first authentication, a webcam for face recognition as the second authentication using PCA algorithms in MATLAB, and an existing text-based password for the third authentication factor. If an unauthorized person is detected, an alarm is triggered and an MMS is sent to the account owner for verification before access is granted. The system aims to improve upon existing smart card and password-based authentication systems.
The document discusses various security issues that developers need to consider when building applications including input validation, cross-site scripting, SQL injection, file system operations, and reducing the attack surface. It provides examples of common vulnerabilities and recommends approaches like validating all untrusted data, using output encoding, adding access controls, and conducting security testing.
This document discusses password authentication and introduces SecureOTP as a two-factor authentication solution. Passwords have weaknesses like being easily cracked, stolen, or guessed. SecureOTP provides strong authentication through a combination of something you know (a password) and something you have (a one-time password token). It generates one-time passwords using an algorithm based on time, events, or challenges to prevent theft or guessing of passwords. SecureOTP offers hardware and software tokens that provide mobile, low-cost, and secure two-factor authentication as an alternative to weak single-factor password authentication.
Sharing our agency experience of developing secure web applications for some of the UK's leading high street banks and brands with a focus on the pitfalls you face when developing code in PHP. The talk will contain specific details on the many attack vectors that hackers will use to attempt to access and exploit your site and how you can improve your development process to avoid them.
Topics covered will include some old chestnuts like XSS (Cross Site Scripting) and SQL injection through to issues like aSession Hijacking.
The talk is aimed at developers who have perhaps not truly considered security of their applications before to developers who would like to extend their knowledge. The talk is aimed at software developers and will contain practical code-based examples and solutions.
Neville Varnham discusses various cyber security threats related to PeopleSoft systems. He notes that ransomware schemes now allow technically illiterate criminals to conduct cyber attacks. Password cracking software can crack simple passwords in under a minute. The document also discusses a past university data breach involving PeopleSoft after a student was able to access a database with Social Security numbers. Varnham provides an overview of steps organizations can take to harden their PeopleSoft security, such as enabling encryption, implementing password policies, and ensuring proper logging and auditing.
Core defense mechanisms against security attacks on web applicationsKaran Nagrecha
This presentation includes various attack vectors and how to overcome those. Things to keep in mind during and after the development of an application in order to make it secure against attacks. It also includes basic steps to make application secure, which most of the developers forget or do not implement while developing an application.
Application Security Architecture and Threat ModellingPriyanka Aash
95% of attacks are against “Web Servers and Web Applications”
Security Architecture and SDLC
3 Tier – Web App Architecture
Would you trust the code?
Traditional SDLC
Secure SDLC
SAST vs. DAST
This document discusses NoSQL injection and strategies for preventing it. It begins with an introduction comparing NoSQL and SQL databases. Next, it defines NoSQL injection and how it can occur. The document then discusses various techniques for preventing NoSQL injection attacks, including reviewing code for vulnerabilities and using input validation. It also provides an example of how NoSQL injection could happen in a PHP/MongoDB application and how to validate input as a string to prevent it.
This document discusses various techniques for protecting sensitive data, including encryption, hashing, encoding, and message authentication codes (MACs). It explains the differences between encoding, encryption, and hashing. Symmetric and asymmetric encryption techniques are covered. The document also discusses common cryptographic algorithms like PBKDF2 and HMAC that are used to securely store passwords and verify message integrity. Specific attacks like replay attacks are explained along with countermeasures like timestamps and nonces.
This document provides details about a training course on the Yii 2 software framework, including the course code, length, dates, target audience, and syllabus. The 26-hour course consists of 13 sessions covering topics like the Yii framework features and structure, building applications with Gii, models, views, authentication, authorization, and modules. It aims to teach programmers and web developers how to develop web applications using the Yii PHP framework. Registration can be done online, and the course will be held at the University of Mashhad's Virtual Training Laboratory.
This document describes a 24-hour specialized training course on web application security in PHP. The course syllabus covers topics such as web application architecture, HTTP protocol, common vulnerabilities, SQL injection, authentication strategies, authorization, XSS and CSRF prevention, session management, file uploads, threat modeling and more. The target audience are web application developers and the course will help participants learn how to develop secure PHP applications. It provides examples of vulnerable code and practices for securing code against common attacks.
This document discusses validating, sanitizing, and escaping user data when building web applications. It explains that validating ensures user input matches the requested format, sanitizing cleans input by removing unsafe characters, and escaping secures output before rendering. Specific validation and sanitization techniques are described, such as checking data types, filtering HTML tags and attributes, and removing special characters. The key differences between validation and sanitization are also summarized - validation checks against rules while sanitization only removes unsafe code. Finally, PHP's filter_var function is introduced as a way to both sanitize and validate data in one step.
Yii is a high-performance PHP framework that uses an MVC design pattern. It enables maximum code reuse and accelerates development. Yii features include an ORM, form handling, caching, internationalization, and security measures. The framework follows conventions for file structure, naming, and configuration to promote best practices.
Italy Agriculture Equipment Market Outlook to 2027harveenkaur52
Agriculture and Animal Care
Ken Research has an expertise in Agriculture and Animal Care sector and offer vast collection of information related to all major aspects such as Agriculture equipment, Crop Protection, Seed, Agriculture Chemical, Fertilizers, Protected Cultivators, Palm Oil, Hybrid Seed, Animal Feed additives and many more.
Our continuous study and findings in agriculture sector provide better insights to companies dealing with related product and services, government and agriculture associations, researchers and students to well understand the present and expected scenario.
Our Animal care category provides solutions on Animal Healthcare and related products and services, including, animal feed additives, vaccination
Instagram has become one of the most popular social media platforms, allowing people to share photos, videos, and stories with their followers. Sometimes, though, you might want to view someone's story without them knowing.
Meet up Milano 14 _ Axpo Italia_ Migration from Mule3 (On-prem) to.pdfFlorence Consulting
Quattordicesimo Meetup di Milano, tenutosi a Milano il 23 Maggio 2024 dalle ore 17:00 alle ore 18:30 in presenza e da remoto.
Abbiamo parlato di come Axpo Italia S.p.A. ha ridotto il technical debt migrando le proprie APIs da Mule 3.9 a Mule 4.4 passando anche da on-premises a CloudHub 1.0.
Ready to Unlock the Power of Blockchain!Toptal Tech
Imagine a world where data flows freely, yet remains secure. A world where trust is built into the fabric of every transaction. This is the promise of blockchain, a revolutionary technology poised to reshape our digital landscape.
Toptal Tech is at the forefront of this innovation, connecting you with the brightest minds in blockchain development. Together, we can unlock the potential of this transformative technology, building a future of transparency, security, and endless possibilities.
Gen Z and the marketplaces - let's translate their needsLaura Szabó
The product workshop focused on exploring the requirements of Generation Z in relation to marketplace dynamics. We delved into their specific needs, examined the specifics in their shopping preferences, and analyzed their preferred methods for accessing information and making purchases within a marketplace. Through the study of real-life cases , we tried to gain valuable insights into enhancing the marketplace experience for Generation Z.
The workshop was held on the DMA Conference in Vienna June 2024.
3. Authentication
Scenarios :
Providing An Appropriate Authentication for CollegeAuthentication Library Website
Table of Content
Common Web Authentication Threats
Common Weak Web Authentication Strategies
Strategies For Strong Authentication
5. Authentication
Defenition
Authentication and authorization are required for a Web page that should be
limited to certain users.
Authentication is the process of determining whether someone or something
is, in fact, who or what it is declared to be.
o the ownership factors: ID card,phone
o the knowledge factors: password, personal identification number (PIN)
o the inherence factors: Something the user is or does (e.g., fingerprint,
DNA
6. Authentication
Forms based authentication
Forms based authentication provides the web application designer the
most control over theuser interface, and thus it is widely used.
Forms based authentication suffers from:
o Clear text credentials
o Weak password controls
o Man in the middle attacks
7. Authentication
Threat Categorization
STRIDE ::adversarial perspectiev
Spoofing Tampering Repudition Information
disclosure
Elevation of
privilage
Denial
of service
ASF :: defensive perspective
Data
Protection in
Storage and
Transit
Exception
Management
Data
Validation
Configuration
Management
Authorization Authentication Auditing &
Logging
8. Authentication
Attacker Testing Autentication
Threats Desc
Testing for Credentials
transport over an
encrypted channel
using secure protocols that protect them from an attacker or not
Testing for user
enumeration
there are default user accounts
Testing for bypassing
authentication schema
by recognizing that not all of the application‘s resources are
adequately protected.
(-Session ID Prediction—sql injection )
9. Authentication
Attacker Testing Autentication
Threats Desc
Testing for vulnerable
Remember Password &
pwd reset
best security is achieved if the password reset is done via an email
how the application manages those process shows you the password
Testing for CAPTCHA questions have a very limited set of possible answers
Testing for LOGOUT &
Browser Cache
Management
logout button is present and well visible
destroys all session token, or at least renders them unusable
A timeout is enforced and it is properly checked by the server
10. Authentication
Weak Authentication Functionality
Failure to drop privileges when reasonable
Weak Passwords and password functionality
Using referer field for authentication or authorization
Using single-factor authentication in important systems
Transactions to be replayed or authorization tokens to be reused
11. Authentication
UserName Management Vulnerability
Predictable Usernames : attackers can perform a denial of service
o Firstname.Lastname
o Any monotonically increasing number
o E-mail address (unless the users are random enough)
o Semi-public data, such as employee number, or simila
Don’t validate for HTML, SQL and LDAP Injection
13. Authentication
Weak Passwords and password functionality
Passwords should be complex in composition
checks should be done on the backend/server side of the application
Simply checking that a password is not NULL is not sufficient:
Tip : operator == casts between two different types if they are different, while the === operator
performs a 'typesafe comparison'.
$pass=$_GET[‘pass’]
If($pass===null)
// echo error
1 === 1: true
1 == 1: true
1 === "1": false // 1 is an integer, "1" is a string
1 == "1": true // "1" gets casted to an integer, which is
14. Authentication
Good Passwords
Rules Reg ExP
at least: 1 Uppercase character (A-Z) ^[a-z]$
at least: 1 Lowercase character (a-z) ^[A-Z]$
at least: 1 digit (0-9) ^[0-9]$
at least one special character (!"£$%&...) [!"£$%^&*()]
a defined minimum length (8 chars) ^[a-z]{3,5}$
a defined maximum length (as with all external input) ^[a-z]{3,5}$
no contiguous characters (123abcd)
not more than 2 identical characters in a row (1111) ^(([a-z0-9])2?(?!2))+$
15. Authentication
Weak Password Storage Strategies
Passwords should be stored using a one-way hash algorithm.
Once passwords are persisted, there is not reason why they should be
human-readable. The
Storing a hash of a password, which can not be reversed, makes it more
difficult to recover the plain text passwords.
ensures that administration staff for an application does not have access
to other users’ passwords.
16. Authentication
Weak Password Storage Strategies
Salting:
o A salt is a random number of a fixed length.
o Storing simply hashed passwords has its issues
o stored as clear text next to the hashed password:
17. Authentication
Code Reviw For Vulnerabilities Related To Autentication
Threats Desc
SQL Injection bypass authentication functionality
add a malicious user to a system for future use.
Data Validation This also goes for authentication fields.
XSS issues to perform identity, Phishing, and session hijacking attacks
Error Handling Insight into valid and invalid user IDs
Giving insight into the database structure
Hashing Weak hash algorithms such as MD5
Brute Force/Dictionary Attack Determined brute force attacks cannot easily be defeated
18. Authentication
Best Practices :
Passwords are trivially broken and are unsuitable for high value systems.
Re-authenticate the user for high value transactions and access to protected areas
Authentication is only as strong as your user management processes
o non-repudiation, the more expensive the process.
19. Authentication
Passwords Best Practices :
Train your users as to suitable password construction
Encourage users to use pass phrases instead of passwords
Allow your users to write down their passwords as long as they keep them safe
passwords between 8 and 16 that cannot be easily cracked(expiry no less than 30 days
pass phrases above 16 characters probably do not need a hard expiry limit, but a
gentle reminder after (say) 90 days instead.
20. Authentication
Change passwords :
Ensure your application has a change password function.
Use AUTOCOMPLETE=off to prevent browsers from caching the password locally
The form must include the old password, the new password and a confirmation of the
new password
If the user gets the old password wrong too many times, lock the account and kill the
session
21. Authentication
Brute Force
Applications should be robust in the face of determined automated brute
force and dictionary attack, such as from Brutus or custom scripts.
Determined brute force attacks cannot easily be defeated, only delayed.
If the application allows more than five attempts from a single IP address,
or a collection rate in excess of 10 requests a second, it’s likely that the
application will fall to determined brute force attack.
22. Authentication
Brute Force Countermeasure
logs failed authentication attempts
A delay of three seconds can make automated brute force attacks almost infeasible.
Error message that does not disclose which part of the application credentials are
incorrect.
for applications requiring stronger controls, blocking access from abusive IP addresses
(accessing more than three accounts from the same IP address, or attempting to lock
outmore than one account)
23. Authentication
Browser remembers passwords
Modern browsers offer users the ability to manage their multitude of
credentials by storing them insecurely on their computer.
In the rendered HTTP, send the following in any sensitive input fields,
such as usernames,passwords, password re-validation, credit card and
CCV fields, and so on:
<form … AUTOCOMPLETE="off"> - for all form fields
<input … AUTOCOMPLETE="off"> - for just one field