Application Security - Introductory Cyber Security
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Application Security

Application Security

Application security is a comprehensive examination of software vulnerabilities and their mitigations, including risks related to coding errors, web application vulnerabilities, and core internet protocols. The chapter covers critical topics, such as buffer overflows, XSS attacks, and secure cookie management, alongside overarching strategies for ensuring both client-side and server-side security. By understanding these vulnerabilities and implementing recommended practices, individuals can significantly improve the protection of applications against malicious exploits.

21 sections

Sections

Navigate through the learning materials and practice exercises.

  1. 1
    Basic Application Vulnerabilities And Their Mitigations

    This section explores fundamental software vulnerabilities and their...

  2. 1.1
    Buffer Overflow

    Buffer overflow vulnerabilities occur when a program writes data beyond a...

  3. 1.2
    Integer Overflow

    Integer overflow occurs when arithmetic operations exceed the limits of a...

  4. 1.3
    Format String Vulnerability

    Format string vulnerabilities arise when unsanitized user input is used as a...

  5. 2
    Web Client Security

    This section explores client-side web security, focusing on protecting users...

  6. 2.1
    Same-Origin Principle (Sop)

    The Same-Origin Principle (SOP) is a vital web security policy that...

  7. 2.2
    Dom (Document Object Model)

    The Document Object Model (DOM) is crucial for creating interactive web...

  8. 2.3
    Javascript Vulnerabilities

    JavaScript vulnerabilities are critical security risks that arise from...

  9. 2.4
    Cookies And Cookie Attributes Secure, Httponly

    This section discusses the functionality and secure management of cookies in...

  10. 2.5
    Concept Of Session And Session Id

    This section explores the concepts of sessions and session IDs within web...

  11. 2.6
    Session Hijacking Vulnerability

    Session hijacking is an attack where an attacker gains unauthorized access...

  12. 2.7
    Http Vs. Https And Ssl/tls And Version Issues

    This section discusses the differences between HTTP and HTTPS, focusing on...

  13. 3
    Web Server Security: Common Attacks And Mitigation Techniques

    This section covers common web server vulnerabilities, the mechanisms behind...

  14. 3.1
    Cross-Site Scripting (Xss)

    Cross-Site Scripting (XSS) is a code injection vulnerability that allows...

  15. 3.2
    Cross-Site Request Forgery (Csrf)

    Cross-Site Request Forgery (CSRF) tricks users' browsers into making...

  16. 3.3
    Sql Injection

    SQL Injection is a code injection vulnerability that allows attackers to...

  17. 3.4
    Command Injection

    Command injection is a security vulnerability where attackers can execute...

  18. 4
    Vulnerabilities In Core Internet Protocols And Suggested Remedies

    This section addresses the inherent vulnerabilities in core internet...

  19. 4.1
    Vulnerabilities In Dns (Domain Name System)

    This section discusses the inherent vulnerabilities in the Domain Name...

  20. 4.2
    Vulnerabilities In Routing Protocols (E.g., Bgp)

    The section covers inherent vulnerabilities in routing protocols,...

  21. 4.3
    Vulnerabilities In Ip Protocols (Especially Ipv4) And Remedies

    This section addresses the significant vulnerabilities inherent in the IPv4...

What we have learnt

  • Understanding of fundamental application vulnerabilities like buffer overflow and SQL injection.
  • Importance of secure cookie management and web session security.
  • Overview of core internet protocol vulnerabilities and suggested remedies.

Key Concepts

-- Buffer Overflow
A situation where a program writes more data to a buffer than it can hold, potentially allowing an attacker to execute arbitrary code.
-- CrossSite Scripting (XSS)
A vulnerability that allows attackers to inject scripts into web pages viewed by other users, which can lead to data theft and session hijacking.
-- SameOrigin Principle (SOP)
A security measure that restricts how a document or script loaded from one origin can interact with resources from another origin.
-- Session Hijacking
An attack where an attacker gains unauthorized access to a user's session, typically through stealing session cookies.
-- SQL Injection
A code injection technique that exploits security vulnerabilities in an application's software by interfering with the queries made to its database.
-- DNS Cache Poisoning
An attack that enables an attacker to insert malicious DNS records into a resolver's cache, redirecting users to fraudulent sites.

Additional Learning Materials

Supplementary resources to enhance your learning experience.