 mySQL 006-002 : Certified MySQL 5.0 DBA Part II ExamExam Dumps Organized by Guangli
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Exam Number : 006-002
Exam Name : Certified MySQL 5.0 DBA Part II
Vendor Name : mySQL
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mySQL II answers
task 5: net safety (group project)
Introduction
in this project, we supply an insecure web page, and your job is to assault it by exploiting three commonplace courses of vulnerabilities: SQL injection, pass-web page request forgery (CSRF), and move-web site scripting (XSS). you are additionally requested to make the most these complications with various fallacious defenses in location. knowing how these assaults work will support you better guard your own net applications.
here is a group project, and need to be executed in companies of two or three best.
targets
be taught to spot typical vulnerabilities in sites and to evade them on your personal projects.
keep in mind the dangers these issues pose and the weaknesses of naive defenses.
gain journey with internet structure and with HTML, JavaScript, and SQL programming.
read this first
This challenge asks you to operate assaults, with our permission, towards a goal web site that we're offering for this goal. attempting the identical types of assaults in opposition t different web sites without authorization is unlawful by using law and university guidelines. You have to not attack any web page with out authorization! Per course coverage, you're required to admire the privacy and property rights of others continuously. See “appropriate, rules, and responsibilities” on the Princeton institution website for extra particulars.
goal website
A startup named BUNGLE! is ready to launch its first product — a web search engine — but their investors are anxious about security problems. in contrast to the Bunglers who developed the web site, you took COS 432, so the investors have employed you to function a protection evaluation before it goes reside.
BUNGLE! is accessible for you to look at various at http://bungle.cos432.org.
The web page is written in Python the use of the Bottle net framework. although Bottle has constructed-in mechanisms that support safeguard in opposition t some normal vulnerabilities, the Bunglers have circumvented or ignored these mechanisms in a number of locations.
apart from providing search consequences, the website accepts logins and tracks users’ search histories. It shops usernames, passwords, and search historical past in a MySQL database. earlier than being granted entry to the supply code, you reverse engineered the web page and determined that it replies to five main URLs:
/
/search
/login
/logout
/create
The characteristic of those URLs is explained below, but when you desire an additional problem, you can skip the leisure of this area and do the reverse engineering yourself.
leading web page (/) The main web page accepts GET requests and displays a search kind. When submitted,this form considerations a GET request to /search, sending the search string because the parameter “q”.If no user is logged in, the main page additionally displays a kind that gives the user the option of logging in or growing an account. The form considerations post requests to /login and /create.
Search consequences (/search) the hunt consequences web page accepts GET requests and prints the hunt string, offered within the “q” question parameter, along with the hunt consequences. If the user is logged in, the web page additionally displays the person’s contemporary search history in a sidebar.word: seeing that genuine search isn't important to this challenge, you might not obtain any results.
Login handler (/login) The login handler accepts publish requests and takes plaintext “username” and “password” question parameters. It exams the user database to see if a user with those credentials exists. if so, it units a login cookie and redirects the browser to the leading page. The cookie tracks which user is logged in; manipulating or forging it isn't part of this venture.
Logout handler (/logout) The logout handler accepts submit requests. It deletes the login cookie,if set, and redirects the browser to the leading page.
Create account handler (/create) The create account handler accepts post requests and receives plaintext “username” and “password” question parameters. It inserts the username and password into the database of clients, until a person with that username already exists. It then logs the consumer in and redirects the browser to the main web page.observe: The password is neither despatched nor saved securely; despite the fact, not one of the attacks you enforce should still rely upon this behavior. you should definitely select a password that different groups will no longer guess, but certainly not use an important password to test an insecure web page (in generic, you mustn't reuse any passwords)!
guidelines
virtual machine: For this challenge, we’d such as you to do your whole trying out in the VM that you used for assignment 4. This VM gives Firefox (the browser we can use for grading is the same version) and a technique for internet hosting a local HTTP server (vital for part 3). Browser types have moderate variations of their behavior that can also affect your XSS and CSRF attacks, so we totally recommend that you enhance and verify your solutions in the VM.
protection tiers: The Bunglers have been experimenting with some naïve defenses, so that you also need to exhibit that these provide insufficient coverage. In constituents 2 and three, the website comprises drop-down menus at the top of every page that help you trade the CSRF and XSS defenses which are in use. The solutions you submit ought to override these choices by using together with the csrfdefense=n or xssdefense=n parameter within the goal URL, as certain in each and every assignment under. You may additionally now not attempt to subvert the mechanism for altering the degree of defense in your assaults. make certain to test your options with the applicable defense levels!
In all constituents, remember to put in force the easiest assault that you could believe of that defeats the given set of defenses. In different phrases, do not without problems attack the highest degree of protection and submit that attack as your solution for all defenses. You don't deserve to mix the vulnerabilities, except explicitly mentioned.
materials: The Firefox web developer equipment might be very beneficial for this challenge, chiefly the JavaScript console and debugger, DOM inspector, and community display screen. To open these tools, click the Developer button within the Firefox menu. See https://developer.mozilla.org/en-US/medical doctors/tools. notice that there's additionally a special edition of the browser known as Firefox Developer edition; you’re welcome to make use of it to develop and verify, however we might be grading with the usual edition of Firefox.
Your solutions will contain manipulating SQL statements and writing internet code using HTML, JavaScript, and the jQuery library. be sure you search the web for answers to primary how-to questions. there are many exceptional on-line materials for gaining knowledge of these equipment. here are a couple of that we advocate:
To study more about SQL Injection, XSS, and CSRF assaults, and for suggestions on exploiting them, see:
Getting all started
down load the directory template right here. you should be the usage of this to arrange your solutions. for many of the questions, you could simply class up the answer within the textual content/html data we now have created for you. besides the fact that children, for 1.2, be certain you change the placeholder zip archive with your own zip file that consists of the entire supply code.
half 1. SQL Injection
Your first goal is to display SQL injection assaults that log you in as an arbitrary user without realizing the password. with a view to give protection to different students’ money owed, we’ve made a collection of separate login forms so that you can attack that aren’t part of the main BUNGLE! site. For every of here defenses, supply inputs to the target login form that efficiently log you in as the user “sufferer”:
No defensesTarget: http://bungle.cos432.org/sqlinject0/publish: sql_0.txt
standard escapingThe server escapes single fees (') within the inputs through replacing them with two single charges.target: http://bungle.cos432.org/sqlinject1/post: sql_1.txt
Escaping and HashingThe server uses right here php code, which escapes the username and applies the MD5 hash function to the password:
if (isset($_POST['username']) and isset($_POST['password']))
$username = mysql_real_escape_string($_POST['username']);
$password = md5($_POST['password'], actual);
$sql_s = "choose * FROM users where username='$username' and pw='$password'";
$rs = mysql_query($sql_s);
if (mysql_num_rows($rs) > 0)
echo "Login successful!";
else
echo "flawed username or password";
this is more complicated than the previous two defenses. you're going to deserve to write a program to provide a working take advantage of. that you can use any language you adore, however we recommend C for its permance. if you use a different language, your application will doubtless want longer time to execute.target: http://bungle.cos432.org/sqlinject2/put up: sql_2.txt and sql_2_src.zip (zip archive of the application information that you wrote)
The SQL (extra credit)This target uses a different database. Your job is to make use of SQL injection to retrieve:
The name of the database
The edition of the SQL server
all of the names of the tables in the database
A secret string hidden within the database
goal: http://bungle.cos432.org/sqlinject3/put up: sql_3.txtFor this part, the textual content file you post should begins with a listing of the URLs for all of the queries you made to gain knowledge of the answers. After the record of the URLs, show the values of the database identify, SQL server edition, names of tables and a secret string the usage of this structure:
URL
URL
URL
...
identify: DB identify
version: DB edition string
Tables: comma separated names
Secret: secret string
What to publish For 1.0, 1.1, and 1.2, in case you correctly log in as sufferer, the server will give a URL-encoded version of your form inputs. post a textual content file with the specified filename containing only this line. For 1.2, also publish the supply code for the application you wrote, as a zipper file (sql_2_src.zip). For 1.3, put up a text file as unique.
half 2. move-website Request Forgery (CSRF)
Your subsequent task is to exhibit CSRF vulnerabilities towards the login kind, and BUNGLE! has provided two diversifications of their implementation for you to look at various. Your purpose is to assemble assaults that surreptitiously cause the sufferer to log in to an account you handle, for that reason enabling you to display screen the victim’s search queries with the aid of viewing the hunt heritage for this account. For every of the defenses below, create an HTML file that, when opened by way of a victim, logs their browser into BUNGLE! beneath the account attacker and password l33th4x.
Your options may still not reveal facts of an attack; the browser should still just reveal a blank web page. (If the victim later visits BUNGLE!, it will say “logged in as attacker”, but that’s quality for functions of the task. after all, most users gained’t automatically observe.)
No defensesTarget: http://bungle.cos432.org/login?csrfdefense=0&xssdefense=4Submit: csrf_0.html
Token validationThe server units a cookie named csrf_token to a random 16-byte value and additionally includes this value as a hidden field in the login form. When the kind is submitted, the server verifies that the client’s cookie suits the price in the form. you are allowed to exploit the XSS vulnerability from part three to achieve your intention.goal: http://bungle.cos432.org/login?csrfdefense=1&xssdefense=0Submit: csrf_1.html
Token validation, with out XSS [Extra credit]Accomplish the equal assignment as above (Token validation) devoid of using XSS.goal: http://bungle.cos432.org/login?csrfdefense=1&xssdefense=4Submit: csrf_2.htmlThis problem is hard. We feel it requires discovering a 0-day vulnerability or an accidental trojan horse in our code.
What to publish For every half, put up an HTML file with the given name that accomplishes the precise assault against the certain target URL. Please be aware to appropriately specify the CSRF defense ranges in the URLs. The HTML information you post might also embed inline JavaScript and cargo jQuery from the URL:
http://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js
it is also permissible to load the jQuery cookies library from the URL:
https://cdnjs.cloudflare.com/ajax/libs/jquery-cookie/1.four.1/jquery.cookie.min.js
otherwise, your code need to be self contained.
look at various your options by way of opening them as local files in the browser within the Linux VM. observe: in view that you’re sharing the attacker account with different college students, we’ve complicated-coded it so the quest background gained’t really replace. that you could check with a unique account you create to look the historical past change.
part three. move-web site Scripting (XSS)
Your remaining aim is to exhibit XSS attacks towards the BUNGLE! search container, which does not safely filter search phrases earlier than echoing them to the outcomes web page. For each of the defenses beneath, your purpose is to assemble a URL that, when loaded in the victim’s browser, as it should be executes the specific payload. We suggest that you simply start by means of trying out with an easy payload (e.g., alert(0);), then circulation on to the whole payload. be aware that make sure to be capable of enforce the payload as soon as, then use distinct skill of encoding it to pass the distinctive defenses.
Payload The payload (the code that the attack tries to execute) could be to steal the username and the most fresh search the actual user has carried out on the BUNGLE! web page. When a victim visits the URL you create, these stolen objects should be sent to the attacker’s server for collection.
For purposes of grading, your attack may still file these pursuits by loading the URL:
http://localhost:31337/stolen?person=username&last_search=last_search
which you could check receiving this records within the offered VM by means of downloading
log_listener.py
and operating these instructions in terminal:
$ cd /Downloads; python log_listener.py
and gazing the HTTP GET request that your payload generates. To further look at various that your HTTP server is operating, try navigating to:
http://localhost:31337
Defenses There are five ranges of protection. In each case, you should publish the least difficult assault which you can discover that works against that protection; be sure to no longer easily assault the highest level and post your solution for that level for every degree. try to make use of a different method for every defense. The Python code that implements each and every protection is shown below, together with the target URL and the filename remember to publish.
No defensesTarget: http://bungle.cos432.org/search?xssdefense=0Submit: xss_0.txtAlso put up a human-readable version of your payload code (as opposed to the kind encoded into the URL) in a file named: xss_payload.html
get rid of “script”filtered = re.sub(r"(?i)script", "", enter)target: http://bungle.cos432.org/search?xssdefense=1Submit: xss_1.txt
eradicate a few tagsfiltered = re.sub(r"(?i)script|<img|<physique|<fashion|<meta|<embed|<object","", input)target: http://bungle.cos432.org/search?xssdefense=2Submit: xss_2.txt
eradicate some punctuationfiltered = re.sub(r"[;'\"]", "", enter)target: http://bungle.cos432.org/search?xssdefense=3Submit: xss_3.txt
What to publish Your submission for each and every level of protection will be a textual content file with the detailed filename that carries a single line together with a URL. When this URL is loaded in a sufferer’s browser, it's going to execute the special payload towards the certain target. Please bear in mind to correctly specify the XSS protection stages for your URLs (when you've got nested URLs, specify the levels in the nestes ones too!). The payload encoded for your URLs may also embed inline JavaScript and load jQuery from the URL:
http://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js
it's additionally permissible to load the jQuery cookies library from the URL:
https://cdnjs.cloudflare.com/ajax/libs/jquery-cookie/1.4.1/jquery.cookie.min.js
in any other case, your code must be self contained. verify your options with the browser in the Linux VM.
Encode < and > [Extra credit]filtered = input.change("<", "<").change(">", ">")target: http://bungle.cos432.org/search?xssdefense=4Submit: xss_4.txtThis problem is tough. We believe it requires discovering a 0-day vulernability or an unintended worm in our code.
part 4. Writeup: greater Defenses
For every of the three sorts of assaults (SQL injection, CSRF, and XSS), write a paragraph of suggestions for the BUNGLE! developers recommending what innovations they may still use to guard themselves.
What to submit A textual content file named writeup.txt containing your security techniques.
Submission guidelines
where applicable, your options may also comprise embedded JavaScript. they are allowed to load simplest the actual Javascript libraries designated above, and have to be in any other case self-contained. verify your options with the browser offered in the VM.
The solutions you post for half 2 (CSRF) and half three (XSS) should consist of the csrfdefense=n or xssdefense=n parameter in the target URL, as special in each and every task. You may additionally now not attempt to subvert the mechanism for changing the level of protection for your attacks. put up your data as a single zip file on Gradescope. Your zip file should have the following constitution:
□ README.txt - Edit the supplied file. Line separated file with the identify and NetID of each member of the neighborhood.
□ part1
□ sql_0.txt - 1.0 No defenses
□ sql_1.txt - 1.1 basic escaping
□ sql_2.txt - 1.2 Escaping and Hashing
□ sql_2_src.zip - 1.2 Escaping and Hashing supply code
□ sql_3.txt - 1.3 The SQL [Extra credit]
□ part2
□ csrf_0.html - 2.0 No defenses
□ csrf_1.html - 2.1 Token validation
□ csrf_2.html - 2.2 Token validation, with out XSS [Extra credit]
□ part3
□ xss_payload.html - three.0 No defenses
□ xss_0.txt - 3.0 No defenses
□ xss_1.txt - 3.1 eradicate "script"
□ xss_2.txt - three.2 eliminate several tags
□ xss_3.txt - three.3 get rid of some punctuation
□ xss_4.txt - 3.four Encode < and > [Extra credit]
□ part4
□ writeup.txt - four.0 protection recommendations
.
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