Cookie Attacks and Security+

Posted by in Security+ | 0 comments

No, cookie attacks doesn’t refer to Attack of the Killer Cookies. Instead, cookie attacks refers to attacks related to cookies.

Cookie Attacks

Can you recognize a cookie? Do you know what type of attacks allow an attacker to access cookies? For example, can you answer this sample Security+ practice test question recently added to the gcgapremium.com online test banks?

Q. A penetration tester has successfully exploited a vulnerability against your organization giving him access to the following data:

User, password, login-date, cookie-id
Homer, canipass, 2016-09-01 11:12, 286755fad04869ca523320acce0dc6a4
Bart, passican, 2016-09-01 11:15, 8edd7261c353c87a113269cd37635c68
Marge, icanpass, 2016-09-01 11:19, 26887fbd90ac0340e29ad62470270401

What type of attack does this represent?

A. SQL injection

B. XML injection

C. XSS

D. Session hijacking

More, do you know why the correct answer is correct and the incorrect answers are incorrect? The answer and explanation is available at the end of this post.

Full Security+ (SY0-401) Course

Full Security+ Course Now Available

Helping you Pass the First Time

Online access includes all of the content from the

CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide

  • Introduction
  • About the exam (including types of questions and strategies for performance-based questions)
  • 100 question pre-assessment exam
  • Mastering Security Basics (full content from Chapter 1 of the study guide including the exam topic review and 20 practice test questions)
  • Exploring Control Types and Methods (full content from Chapter 2 of the study guide including the exam topic review and 20 practice test questions)
  • Understanding Basic Network Security (full content from Chapter 3 of the study guide including the exam topic review and 20 practice test questions)
  • Securing Your Network (full content from Chapter 4 of the study guide including the exam topic review and 20 practice test questions)
  • Securing Hosts and Data (full content from Chapter 5 of the study guide including the exam topic review and 20 practice test questions)
  • Understanding Malware and Social Engineering (full content from Chapter 6 of the study guide including the exam topic review and 20 practice test questions)
  • Identifying Advanced Attacks (full content from Chapter 7 of the study guide including the exam topic review and 20 practice test questions)
  • Managing Risk (full content from Chapter 8 of the study guide including the exam topic review and 20 practice test questions)
  • Preparing for Business Continuity (full content from Chapter 9 of the study guide including the exam topic review and 20 practice test questions)
  • Understanding Cryptography (full content from Chapter 10 of the study guide including the exam topic review and 20 practice test questions)
  • Exploring Operational Security (full content from Chapter 11 of the study guide including the exam topic review and 20 practice test questions)
  • 100 question post-assessment exam
  • Security+ Acronyms

Get the Full Security+ Course Here

 Full Security+ Course Now Available


Test your readiness with these quality materials

Random 100-question tests

Random practice tests from the all of the practice test questions in the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide. All questions include explanations so you'll know why the correct answers are correct, and why the incorrect answers are incorrect.

34 Simulated Performance-based Questions

Eight sets of performance-based questions with multiple questions in each set. These questions help you understand and prepare for performance based questions.

22 Realistic Performance-based Questions

Two new sets of performance-based questions with a total of 22 questions. These new questions use a new testing engine that includes realistic drag and drop, matching, sorting, and fill in the blank questions.

Flashcard Set

  • 273 Security+ Flashcards to reinforce key testable concepts
  • 280 Security+ acronyms flashcards to help you master the required acronyms
  • 204 Security+ Remember This slides

Audio - SY0-401 Security+ Remember This Audio Files

Learn by Listening. Over one hour and 15 minutes of audio (MP3 downloads.)

Audio - SY0-401 Security+ Question and Answer Audio Files

Learn by Listening. Over three hours hour and 15 minutes of audio (MP3 downloads.)

Bonus #1

Audio from the end of chapter reviews from each of the chapters in the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide. Over one hour and 15 minutes of additional audio.

Bonus #2

Subnetting mini-tutorial that will help you answer two key question types:
  • Identify how many hosts a subnet supports
  • Identify valid IP addresses within a subnet

Bonus #3 

Access the study materials for a total of 60 days because sometimes life happens.

Get the Full Security+ Course Here

Cross-Site Scripting

Cross-site scripting (XSS) is a web application vulnerability that can be prevented with input validation. Attackers embed malicious HTML or JavaScript code into an email or web site error message. If a user responds to the email or error message, it executes the code. Many times, this gives the attacker access to user cookies or other information about the user.

Note. Cookies are simply text files stored on a user’s system. The text can be anything desired by the website (or the website developers).

You may be wondering why the acronym isn’t CSS instead of XSS. The reason is that web sites use Cascading Style Sheets (identified as CSS) and CSS files are not malicious.

HTML and JavaScript code use tags surrounded by the < and > characters. For example, images are placed within a web page with the <img> tag. These tags support many additional options and commands, which developers use to create feature-rich web pages. However, attackers can manipulate these tags to run malicious code. Attackers often embed cross-scripting code into comments on blog pages or forums when the page allows users to include HTML tags.

As an example, a bug in Twitter’s web site resulted in a cross-site scripting problem in 2010. A malicious Twitter user discovered the bug and embedded JavaScript code into a tweet. When innocent users opened a web page that included the malicious tweet, the code ran on their systems. In this case, the malicious code used the onMouseOver event. When users hovered their mouse over the tweet, it did two things. It retweeted the tweet, sending it out to all of the user’s followers. It also launched a pop-up window displaying content from a hard-core Japanese pornography web site.

Although this attack was more embarrassing to Twitter than harmful to end users, many other cross-site scripting attacks are malicious. They can allow attackers to redirect users to other web sites, steal cookies off a user’s system, read passwords from a web browser’s cache, and more. If a web site stored private data in a user’s cookie, such as a username and password, an attacker can use a cross-site scripting attack to retrieve this information.

The primary protection against cross-site scripting attacks is at the web application with input validation techniques to block the use of HTML tags and JavaScript tags. Tags are embedded within the < and > characters, so it’s possible to block these tags by rejecting any text that includes these characters. It’s also important to educate users about the dangers of clicking links. Some XSS attacks send emails with malicious links within them. The XSS attack fails if users do not click the link.

Security+ Practice Test Questions

SYO-501 Practice Test Questions Now Available

SYO-401 Practice Test Questions

Over 440 realistic Security+ practice test questions

All questions include explanations so you'll know why the correct answers are correct,

and why the incorrect answers are incorrect.

Pass the Security+ Exam

the First Time You Take It

Multiple quiz formats to let you use these questions based on the way you learn.
  • Learn mode - randomized. View each of the questions in random order. Learn mode allows you to keep selecting answers until you select the correct answer. Once you select the correct answer, you'll see the explanation. Click here to see how learn mode works.
  • Learn mode - not randomized. View each of the questions in the same order. Use this if you want to make sure that you see all of the questions. Learn mode allows you to keep selecting answers until you select the correct answer. Once you select the correct answer, you'll see the explanation. Click here to see how learn mode works.
  • Test mode - randomized. View each of the questions in random order. In test mode, you can only see the correct answers and explanations after you complete the test. Click here to see how test mode works.
  • Test mode - not randomized. View each of the questions in the same order. In test mode, you can only see the correct answers and explanations after you complete the test. Click here to see how test mode works.
  • Test mode - 100 random questions. View 100 random questions from the full test bank similar to how the Security+ exam has a potential maximum of 100 multiple choice questions. In test mode, you can only see the correct answers and explanations after you complete the test. Click here to see how test mode works.

Get the full bank of Security+ (SYO-401) Practice Test Questions Here

 SYO-401 Practice Test Questions


INCLUDES QUESTIONS TO HELP YOU PREPARE

FOR THE NEW PERFORMANCE BASED QUESTIONS 

Bonus - Performance Based Questions

Additional Security+ questions to help you prepare for the new performance based questions. These are included with the full bank of Security+ practice test questions and are divided into different sections. For example, you'll have access to the following links:

- Performance Based Question - Set 1

You'll see a graphic explaining what you might be required to do on the actual exam to match different types of security to mobile devices and servers in a data center. You'll then have two questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 2

You'll see a graphic explaining what you might be required to do on the actual exam to match different types of attacks with the name of the attack type. You'll then have five questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 3

You'll see a graphic showing a network with computers and servers separated by a firewall. The firewall is used to control traffic between the computers and users using rules within an access control list (ACL).  You'll have three questions that test your knowledge and ability to correctly identify the relevant components of the rule. The incorrect answers and explanation provide you with insight into how to correctly answer this type of question on the actual exam.

- Performance Based Question - Set 4

You'll see a graphic explaining what you might be required to do on the actual exam related to what a forensic analyst would do during an investigation. You'll then have two questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 5

You'll see a graphic explaining what you might be required to do on the actual exam to match protocols and ports. You'll then have seven questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 6

You'll see a list of security controls along with a graphic showing devices and locations within an organization, along with instructions on what you might be required to do on the actual exam to match the controls with the devices and locations. You'll then have four questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 7

You'll see a list of authentication methods and authentication factors along with instructions on what you might be required to do on the actual exam to match the authentication methods with the authentication factors. You'll then have six questions that test your knowledge and ability to correctly answer the questions. This set also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 8

You'll see a graphic explaining what you might be required to do on the actual exam to match different types of attacks with the name of the attack type. You'll then have five questions that test your knowledge and ability to correctly answer the questions. This is similar to Set 2 but expands on the possibilities. The set also includes a link to a page showing the end solution for the overall performance based question simulation.

New - Performance Based Question - Set 9

New questions recently added using a different testing engine. See a demo here. This set includes drag and drop and matching questions on ports.

New - Performance Based Question - Set 10

A random set of 20 performance-based questions using drag and drop, matching, sorting, and fill in-the blank. This set includes performance-based questions on RAID.

Get the full bank of Security+ (SYO-401) Practice Test Questions Here

Get the full bank of Security+ Practice Test Questions

Click here if you're looking for SYO-501 Practice Test Questions

Remember this

Cross-site scripting (XSS) attacks allow attackers to capture user information such as cookies. Input validation techniques at the server help prevent XSS attacks.

Session Hijacking Attacks

When a user logs on to a web site, the web site often returns a cookie with a session ID. In many cases, this cookie is stored on the user’s system and remains active until the user logs off. If the user closes the session and returns to the web site, the web site reads the cookie and automatically logs the user on. This is convenient for the user, but can be exploited by an attacker.

Get Certified Get Ahead

In a session hijacking attack, the attacker learns the user’s session ID and uses it to impersonate the user. The web server doesn’t know the difference between the original user and the attacker because it is only identifying the user based on the session ID.

Attackers can read cookies installed on systems through several methods, including cross-site scripting attacks and Flash cookies (described in the next section). Once they have the session ID, they can use header manipulation to hijack the session.

 


Q. A penetration tester has successfully exploited a vulnerability against your organization giving him access to the following data:

User, password, login-date, cookie-id
Homer, canipass, 2016-09-01 11:12, 286755fad04869ca523320acce0dc6a4
Bart, passican, 2016-09-01 11:15, 8edd7261c353c87a113269cd37635c68
Marge, icanpass, 2016-09-01 11:19, 26887fbd90ac0340e29ad62470270401

What type of attack does this represent?

A. SQL injection

B. XML injection

C. XSS

D. Session hijacking

Answer: C. Cross-site scripting (XSS) is the best choice of the available answers. You can see that the penetration tester is looking at cookies because the header includes ‘cookie-id’ and successful cross-site scripting (XSS) attacks allow attackers to capture user information such as cookies.

Note that it is poor programming practice to store user passwords within a cookie. However, poor programming practices probably led to the vulnerability allowing the pen tester to exploit an XSS vulnerability.

A SQL injection attack uses a SQL statement, and typically includes a phrase such as or 1=1.

An XML injection attack would include XML markup data, with XML tags within the < and > symbols.

A session hijacking attack uses a cookie to take over a session. However, it’s more than just the text within a cookie.

See Chapter 6 of the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide for more information on attacks, including cross-site scripting attacks.

Leave a Comment

CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide

Subscribe To Our Newsletter

Join our mailing list and get a free excerpt of the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide.  This excerpt includes the introduction and Chapter 1.

You have Successfully Subscribed!

Get Certified Get Ahead is a participant in the Amazon Services LLC Associates Program,
an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

Copyright © 2015 Get Certified Get Ahead. All Rights Reserved.