Welcome to Cycubix Docs
  • Welcome to Cycubix Docs
  • Our Cybersecurity Training Courses
  • Application Security Series
    • Web Application Security Essentials
      • Introduction | Web Application Security Essentials | Cycubix Docs
      • WebGoat | Web Application Security Essentials | Cycubix Docs
        • WebGoat Installation | Web Application Security | Cycubix Docs
          • Stand-alone
          • Docker
        • WebGoat & WebWolf Run | Web Application Security | Cycubix Docs
        • WebGoat Configuration | Web Application Security | Cycubix Docs
        • WebWolf | Web Application Security | Cycubix Docs
          • Webwolf Upload | WebWolf | Web Application Security | Cycubix
          • Webwolf Mail | WebWolf | Web Application Security | Cycubix
          • WebWolf Landing Page | Web Application Security | Cycubix Docs
        • WebGoat & WebWolf System Requirements | Cycubix Docs
      • ZAP | Web Application Security Essentials | Cycubix Docs
        • ZAP | Download & Installation | Cycubix Docs
        • ZAP | Persist ZAP Session | Cycubix Docs
        • ZAP | ZAP Proxy | Cycubix Docs
      • WebGoat Labs | Web Application Security Essentials | Cycubix Docs
        • General | HTTP Basics | Cycubix Docs
          • General | HTTP Basics (1) | Cycubix Docs
          • General | HTTP Basics (2) | Cycubix Docs
          • General | HTTP Basics (3) | Cycubix Docs
        • General | HTTP Proxies | Cycubix Docs
          • General | HTTP Proxies (1) | Cycubix Docs
          • General | HTTP Proxies (2) | Cycubix Docs
          • General | HTTP Proxies (3) | Cycubix Docs
          • General | HTTP Proxies (4) | Cycubix Docs
          • General | HTTP Proxies (5) | Cycubix Docs
          • General | HTTP Proxies (6) | Cycubix Docs
          • General | HTTP Proxies (7) | Cycubix Docs
          • General | HTTP Proxies (8) | Cycubix Docs
          • General | HTTP Proxies (9) | Cycubix Docs
        • General | Developer Tools | Cycubix Docs
          • General | Developer Tools (1) | Cycubix Docs
          • General | Developer Tools (2) | Cycubix Docs
          • General | Developer Tools (3) | Cycubix Docs
          • General | Developer Tools (4) | Cycubix Docs
          • General | Developer Tools (5) | Cycubix Docs
          • General | Developer Tools (6) | Cycubix Docs
        • General | The CIA Triad | Cycubix Docs
          • General | The CIA Triad (1) | Cycubix Docs
          • General | The CIA Triad (2) | Cycubix Docs
          • General | The CIA Triad (3) | Cycubix Docs
          • General | The CIA Triad (4) | Cycubix Docs
          • General | The CIA Triad (5) | Cycubix Docs
        • A1:2021 | Broken Access Control | Cycubix Docs
          • A1:2021 | Hijack a Session | Cycubix Docs
            • A1:2021 | Hijack a Session (1) | Cycubix Docs
            • A1:2021 | Hijack a Session (2) | Cycubix Docs
          • A1:2021 | Insecure Direct Object Reference | Cycubix Docs
            • A1:2021 | Insecure Direct Object Reference (1) | Cycubix Docs
            • A1:2021 | Insecure Direct Object Reference (2) | Cycubix Docs
            • A1:2021 | Insecure Direct Object Reference (3) | Cycubix Docs
            • A1:2021 | Insecure Direct Object Reference (4) | Cycubix Docs
            • A1:2021 | Insecure Direct Object Reference (5) | Cycubix Docs
            • A1:2021 | Insecure Direct Object Reference (6) | Cycubix Docs
          • A1:2021 | Missing Function Level Access Control | Cycubix Docs
            • A1:2021 | Missing Function Level Access Control (1) | Cycubix Docs
            • A1:2021 | Missing Function Level Access Control (2) | Cycubix Docs
            • A1:2021 | Missing Function Level Access Control (3) | Cycubix Docs
            • A1:2021 | Missing Function Level Access Control (4) | Cycubix Docs
          • A1:2021 | Spoofing an Authentication Cookie | Cycubix Docs
            • A1:2021 | Spoofing an Authentication Cookie (1) | Cycubix Docs
            • A1:2021 | Spoofing an Authentication Cookie (2) | Cycubix Docs
        • A2:2021 | Cryptographic Failures | Cycubix Docs
          • A2:2021 | Crypto Basics (1) | Cycubix Docs
          • A2:2021 | Crypto Basics (2) | Cycubix Docs
          • A2:2021 | Crypto Basics (3) | Cycubix Docs
          • A2:2021 | Crypto Basics (4) | Cycubics Docs
          • A2:2021 | Crypto Basics (5) | Cycubix Docs
          • A2:2021 | Crypto Basics (6) | Cycubix Docs
          • A2:2021 | Crypto Basics (7) | Cycubix Docs
          • A2:2021 | Crypto Basics (8) | Cycubix Docs
          • A2:2021 | Crypto Basics (9) | Cycubix Docs
        • A3:2021 | Injection | Cycubix Docs
          • A3:2021 | SQL Injection Intro | Cycubix Docs
            • A3:2021 | SQL Injection Intro (1) | Cycubix Docs
            • A3:2021 | SQL Injection Intro (2) | Cycubix Docs
            • A3:2021 | SQL Injection Intro (3) | Cycubix Docs
            • A3:2021 | SQL injection Intro (4) | Cycubix Docs
            • A3:2021 | SQL Injection Intro (5) | Cycubix Docs
            • A3:2021 | SQL Injection Intro (6) | Cycubix Docs
            • A3:2021 | SQL Injection Intro (7) | Cycubix Docs
            • A3:2021 | SQL Injection Intro (8) | Cycubix Docs
            • A3:2021 | SQL Injection Intro (9) | Cycubix Docs
            • A3:2021 | SQL Injection Intro (10) | Cycubix Docs
            • A3:2021 | SQL Injection Intro (11) | Cycubix Docs
            • A3:2021 | SQL Injection Intro (12) | Cycubix Docs
            • A3:2021 | SQL Injection Intro (13) | Cycubix Docs
          • A3:2021 | SQL Injection Advanced | Cycubix Docs
            • A3:2021 | SQL Injection Advanced (1) | Cycubix Docs
            • A3:2021 | SQL Injection Advanced (2) | Cycubix Docs
            • A3:2021 | SQL Injection Advanced (3) | Cycubix Docs
            • A3:2021 | SQL Injection Advanced (4) | Cycubix Docs
            • A3:2021 |SQL Injection Advanced (5) | Cycubix Docs
            • A3:2021 | SQL Injection Advanced (6)| Cycubix Docs
          • A3:2021 | Injection | SQL Injection Mitigation | Cycubix Docs
            • A3:2021 | SQL Injection Mitigation (1) | Cycubics Docs
            • A3:2021 | SQL Injection Mitigation (2) |
            • A3:2021 | SQL Injection Mitigation (3) | Cycubix Docs
            • A3:2021 | SQL Injection Mitigation (4) | Cycubix Docs
            • A3:2021 | SQL injection Mitigation (5) | Cycubix Docs
            • A3:2021 | SQL Injection Mitigation (6) | Cycubix Docs
            • A3:2021 | SQL Injection Mitigation (7) | Cycubix Docs
            • A3:2021 | SQL Injection Mitigation (8) | Cycubix Docs
            • A3:2021 | SQL Injection Mitigation (9) | Cycubix Docs
            • A3:2021 | SQL Injection Mitigation (10) | Cycubix Docs
            • A3:2021 | SQL Injection Mitigation (11) | Cycubix Docs
            • A3:2021 | SQL Injection Mitigation (12) | Cycubix Docs
            • A3:2021 | SQL Injection Mitigation (13) | Cycubix Docs
          • A3:2021 | Cross-Site Scripting (XSS) | Cycubix Docs
            • A3:2021 | Cross Site Scripting XXS (1) | Cycubix Docs
            • A3:2021 | Cross Site Scripting (XSS) (2) | Cycubix Docs
            • A3:2021 | Cross Site Scripting (XSS) (3) | Cycubix Docs
            • A3:2021 | Cross Site Scripting (XSS) (4) | Cycubix Docs
            • A3:2021 | Cross Site Scripting (XSS) (5) | Cycubix Docs
            • A3:2021 | Cross Site Scripting (XSS) (6) | Cycubix Docs
            • A3:2021 | Cross Site Scripting (XSS) (7) | Cycubix Docs
            • A3:2021 | Cross Site Scripting (XSS) (8) | Cycubix Docs
            • A3:2021 | Cross Site Scripting (XSS) (9) | Cycubix Docs
            • A3:2021 | Cross Site Scripting (XSS) (10) | Cycubix Docs
            • A3:2021 | Cross Site Scripting (XSS) (11) | Cycubix Docs
            • A3:2021 | Cross Site Scripting (XSS) (12) | Cycubix Docs
          • A3:2021 | Cross Site Scripting Stored | Cycubix Docs
            • A3:2021 | Cross Site Scripting Stored (1) | Cycubix Docs
            • A3:2021 | Cross Site Scripting Stored (2)
            • A3:2021 | Cross Site Scripting Stored (3) | Cycubix Docs
          • A3:2021 | Cross Site Scripting Mitigation | Cycubix Docs
            • A3:2021 | Cross Site Scripting Mitigation (1) | Cycubix Docs
            • A3:2021 | Cross Site Scripting Mitigation (2) | Cycubix Docs
            • A3:2021 | Cross Site Scripting Mitigation (3) | Cycubix Docs
            • A3:2021 | Cross Site Scripting Mitigation (4) | Cycubix Docs
            • A3:2021 | Cross Site Scripting Mitigation (5) | Cycubix Docs
            • A3:2021 | Cross Site Scripting Mitigation (6) |
          • A3:2021 | Path Transversal | Cycubix Docs
            • A3: 2021 | Path Transversal (1) | Cycubix Docs
            • A3:2021 | Path Transversal (2) | Cycubix Docs
            • A3:2021 | Path Transversal (3) | Cycubix Docs
            • A3:2021 | Path Transversal (4) | Cycubix Docs
            • A3:2021 | Path Transversal (5) | Cycubix Docs
            • A3:2023 | Path Transversal (6) | Cycubix Docs
            • A3:2021 | Path Transversal (7) | Cycubix Docs
            • A3:2021 | Path Transversal (8) | Cycubix Docs
        • A5:2021 | Security Misconfiguration | Cycubix Docs
          • A5:2021 | Security Misconfiguration (1) | Cycubix Docs
          • A5:2021 | Security Misconfiguration (2) | Cycubix Docs
          • A5:2021 | Security Misconfiguration (3) | Cycubix Docs
          • A5:2021 | Security Misconfiguration (4) | Cycubix Docs
          • A5:2021 | Security Misconfiguration (5) | Cycubix Docs
          • A5:2021 | Security Misconfiguration (6) | Cycubix Docs
          • A5:2021 | Security Misconfiguration (7) | Cycubix Docs
          • A5:2021 | Security Misconfiguration (8) | Cycubix Docs
          • A5:2021 | Security Misconfiguration (9) | Cycubix Docs
          • A5:2021 | Security Misconfiguration (10) | Cycubix Docs
          • A5:2021 | Security Misconfiguration (11) | Cycubix Docs
          • A5:2021 | Security Misconfiguration (12) | Cycubix Docs
          • A5:2021 | Security Misconfiguration (13) | Cycubix Docs
        • A6:2021 | Vulnerable and Outdated Components | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (1) | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (2) | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (3) | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (4) | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (5) | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (6) | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (7) | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (8) | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (9) | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (10) | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (11) | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (12) | Cycubix Docs
          • A6:2021 | Vulnerable and Outdated Components (13) | Cycubix Docs
        • A7:2021 | Identity and Authentication Failure | Cycubix Docs
          • A7:2021 | Authentication Bypasses | Cycubix Docs
            • A7:2021 | Authentication Bypasses (1) | Cycubix Docs
            • A7:2021 | Authentication Bypasses (2) | Cycubix Docs
          • A7:2021 | Insecure Login | Cycubix Docs
            • A7:2021 | Insecure Login (1) | Cycubix Docs
            • A7:2021 | Insecure Login (2) | Cycubix Docs
          • A7: 2021 | JWT Tokens | Cycubix Docs
            • A7: 2021 | JWT Tokens (1) | Cycubix Docs
            • A7: 2021 | JWT Tokens (2) | Cycubix Docs
            • A7: 2021 | JWT Tokens (3) | Cycubix Docs
            • A7: 2021 | JWT Tokens (4) | Cycubix Docs
            • A7: 2021 | JWT Tokens (5) | Cycubix Docs
            • A7: 2021 | JWT Tokens (6) | Cycubix Docs
            • A7: 2021 | JWT Tokens (7) | Cycubix Docs
            • A7: 2021 | JWT Tokens (8) | Cycubix Docs
            • A7: 2021 | JWT Tokens (9) | Cycubix Docs
            • A7: 2021 | JWT Tokens (10) | Cycubix Docs
            • A7: 2021 | JWT Tokens (11) | Cycubix Docs
            • A7: 2021 | JWT Tokens (12) | Cycubix Docs
            • A7: 2021 | JWT Tokens (13) | Cycubix Docs
            • A7: 2021 | JWT Tokens (14) | Cycubix Docs
            • A7: 2021 | JWT Tokens (15) | Cycubix Docs
            • A7: 2021 | JWT Tokens (16) | Cycubix Docs
            • A7: 2021 | JWT Tokens (17) | Cycubix Docs
            • A7: 2021 | JWT Tokens (18) | Cycubix Docs
            • A7: 2021 | JWT Tokens (19) | Cycubix Docs
          • A7:2021 | Password Reset | Cycubix Docs
            • A7:2021 | Password Reset (1) | Cycubix Docs
            • A7:2021 | Password Reset (2) | Cycubix Docs
            • A7:2021 | Password Reset (3) | Cycubix Docs
            • A7:2021 | Password Reset (4) | Cycubix Docs
            • A7:2021 | Password Reset (5) | Cycubix Docs
            • A7:2021 | Password Reset (6) | Cycubix Docs
            • A7:2021 | Password Reset (7) | Cycubix Docs
          • A7:2021 | Secure Passwords | Cycubix Docs
            • A7:2021 | Secure Passwords (1) | Cycubix Docs
            • A7:2021 | Secure Passwords (2) | Cycubix Docs
            • A7:2021 | Secure Passwords (3) | Cycubix Docs
            • A7:2021 | Secure Passwords (4) | Cycubix Docs
            • A7:2021 | Secure Passwords (5) | Cycubix Docs
            • A7:2021 | Secure Passwords (6) | Cycubix Docs
        • A8:2021 | Software and Data Integrity | Cycubix Docs
          • A8:2021 | Software and Data Integrity | Insecure Deserialization (1) | Cycubix Docs
          • A8:2021 | Software and Data Integrity | Insecure Deserialization (2) | Cycubix Doc
          • A8:2021 | Software and Data Integrity | Insecure Deserialization (3) | Cycubix Doc
          • A8:2021 | Software and Data Integrity | Insecure Deserialization (4) | Cycubix Doc
          • A8:2021 | Software and Data Integrity | Insecure Deserialization (5) | Cycubix Doc
        • A9:2021 | Security Logging Failures | Cycubix Docs
          • A9:2021 | Logging Security (1) | Cycubix Docs
          • A9:2021 | Logging Security (2) | Cycubix Docs
          • A9:2021 | Logging Security (3) | Cycubix Docs
          • A9:2021 | Logging Security (4) | Cycubix Docs
          • A9:2021 | Logging Security (5) | Cycubix Docs
        • A10: 2021 | Server Side Request Forgery | Cycubix Docs
          • A10:2021 | Server Side Request Forgery | Cross Site Request Forgery | Cycubix Docs
            • A10:2021 | Server Side Request Forgery | Cross Site Request Forgery (1) | Cycubix Docs
            • A10:2021 | Server Side Request Forgery | Cross Site Request Forgery (2) | Cycubix Docs
            • A10:2021 | Server Side Request Forgery | Cross Site Request Forgery (3) | Cycubix Docs
            • A10:2021 | Server Side Request Forgery | Cross Site Request Forgery (4) | Cycubix Docs
            • A10:2021 | Server Side Request Forgery | Cross Site Request Forgery (5) | Cycubix Docs
            • A10:2021 | Server Side Request Forgery | Cross Site Request Forgery (6) | Cycubix Docs
            • A10:2021 | Server Side Request Forgery | Cross Site Request Forgery (7) | Cycubix Docs
            • A10:2021 | Server Side Request Forgery | Cross Site Request Forgery (8) | Cycubix Docs
            • A10:2021 | Server Side Request Forgery | Cross Site Request Forgery (9) | Cycubix Docs
          • A10:2021 | Client Side Request Forgery | Cycubix Docs
            • A10:2021 | Server Side Request Forgery (1) | Cycubix Docs
            • A10:2021 | Server Side Request Forgery (2) | Cycubix Docs
            • A10:2021 | Server Side Request Forgery (3) | Cycubix Docs
            • A10:2021 | Server Side Request Forgery (4) | Cycubix Docs
        • Client Side | Cycubix Docs
          • Client Side | Bypass Front End Restrictions | Cycubix Docs
            • Client Side | Bypass Front End Restrictions (1) | Cycubix Docs
            • Client Side | Bypass Front End Restrictions (2) | Cycubix Docs
            • Client Side | Bypass Front End Restrictions (3) | Cycubix Docs
          • Client Side Filtering | Cycubix Docs
            • Client Side | Client Side Filtering (1) | Cycubix Docs
            • Client Side | Client Side Filtering (2) | Cycubix Docs
            • Client Side | Client Side Filtering (3) | Cycubix Docs
          • Client Side | HTML Tampering | Cycubix Docs
            • Client Side | HTML Tampering (1) | Cycubix Docs
            • Client Side | HTML Tampering (2) | Cycubix Docs
            • Client Side | HTML Tampering (3) | Cycubix Docs
        • Challenges | Cycubix Docs
          • Challenges | Admin Lost Password | Cycubix Docs
          • Challenges | Without password | Cycubix Docs
          • Challenges | Admin Password Reset | Cycubix Docs
          • Challenges | Without Account | Cycubox Docs
  • ISC2 Courses
    • CCSP
      • CCSP Domains
      • CCSP Resource Materials
        • CCSP Mind Map | Cycubix Docs
        • CCSP Official Study Guide
        • CCSP Official Practice Tests
        • CCSP Online Test Bank
    • CISSP
      • CISSP Domains
        • Domain 1: Security and Risk Management
        • Domain 2: Asset Security
          • Link Encryption vs End-to-End Encryption
        • Domain 3: Security Architecture and Engineering
        • Domain 4: Communication and Network Security
        • Domain 5: Identity and Access Management (IAM)
        • Domain 6: Security Assessment and Testing
        • Domain 7: Security Operations
        • Domain 8: Software Development Security
      • CISSP Resource Materials
        • CISSP Official Flashcards
        • CISSP Mind Map | Cycubix Docs
        • CISSP Exam Outline
        • CISSP Official Study Guide
        • CISSP Official Practice Tests
        • CISSP Online Test Bank
        • CISSP Glossary
    • CSSLP
      • CSSLP Resource Materials
        • ISC2 CSSLP Official Flashcards
        • CSSLP Mind Map | Cycubix Docs
        • CSSLP Exam Outline | Cycubix Docs
    • Lexicon
      • A
      • B
  • AWS Courses
    • AWS Certified Security – Specialty (SCS-C02)
  • Crowdstrike
    • Troubleshooting Mac Devices
      • Mac sensors on macOS Ventura may fail to remove Falcon.app when uninstalling
      • System Extensions not activated
  • Jamf
    • Jamf Protect
Powered by GitBook
On this page

Was this helpful?

  1. Application Security Series
  2. Web Application Security Essentials
  3. WebGoat Labs | Web Application Security Essentials | Cycubix Docs
  4. A5:2021 | Security Misconfiguration | Cycubix Docs

A5:2021 | Security Misconfiguration (2) | Cycubix Docs

PreviousA5:2021 | Security Misconfiguration (1) | Cycubix DocsNextA5:2021 | Security Misconfiguration (3) | Cycubix Docs

Last updated 10 months ago

Was this helpful?

What is an XML entity?

An XML Entity allows tags to be defined that will be replaced by content when the XML Document is parsed. In general there are three types of entities:

  • internal entities.

  • external entities.

  • parameter entities.

An entity must be created in the Document Type Definition (DTD), let’s start with an example:

As you can see once the XML document is processed by the parser, it will replace the defined entity js with the defined constant "Jo Smith". As you can see this has many advantages as you can change js in one place to for example "John Smith".

In a Java application XML can be used to get data from the client to the server, we are all familiar with JSON apis we can also use xml to get the information across. Most of the time the framework automatically populates the Java object based on the xml structure, for example:

What is an XXE injection?

An XML External Entity attack is a type of attack against an application that parses XML input. This attack occurs when XML input containing a reference to an external entity is processed by a weakly configured XML parser. This attack may lead to the disclosure of confidential data, denial of service, server side request forgery, port scanning from the perspective of the machine where the parser is located, and other system impacts.

Attacks can include disclosing local files, which may contain sensitive data such as passwords or private user data, using file: schemes or relative paths in the system identifier. Since the attack occurs relative to the application processing the XML document, an attacker may use this trusted application to pivot to other internal systems, possibly disclosing other internal content via http(s) requests or launching a CSRF attack to any unprotected internal services. In some situations, an XML processor library that is vulnerable to client-side memory corruption issues may be exploited by dereferencing a malicious URI, possibly allowing arbitrary code execution under the application account. Other attacks can access local resources that may not stop returning data, possibly impacting application availability if too many threads or processes are not released.

In general we can distinguish the following kind of XXE attacks:

  • Classic: in this case an external entity is included in a local DTD.

  • Blind: no output and or errors are shown in the response.

  • Error: try to get the content of a resource in the error message.