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A penetration tester is reviewing the logs of a proxy server and discovers the following URLs:
https://test.comptia.com/profile.php?userid=1546
https://test.cpmptia.com/profile.php?userid=5482
https://test.comptia.com/profile.php?userid=3618
Which of the following types of vulnerabilities should be remediated?
Insecure Direct Object Reference (IDOR) occur when an application provides direct access to objects based on user-supplied input. In the provided URLs, the userid parameter is directly referenced, which can allow attackers to manipulate these references to access unauthorized data. This vulnerability can lead to unauthorized access to other users' profiles by simply changing the userid parameter value. The other vulnerabilities listed (Improper error handling, Race condition, Weak or default configurations) do not directly relate to the issue demonstrated by the URLs.
During a web application test, a penetration tester was able to navigate to https://company.com and view all links on the web page. After manually reviewing the pages, the tester used a web scanner to automate the search for vulnerabilities. When returning to the web application, the following message appeared in the browser: unauthorized to view this page. Which of the following BEST explains what occurred?
The most likely explanation for what occurred is that the tester IP was blocked by the web server. The web server may have detected the web scanner as a malicious or suspicious activity and blocked the tester's IP address from accessing the web application. This could result in an unauthorized to view this page message in the browser.
A penetration tester gains access to a system and establishes persistence, and then runs the following commands:
cat /dev/null > temp
touch --r .bash_history temp
mv temp .bash_history
Which of the following actions is the tester MOST likely performing?
The commands are used to clear the Bash history file of the current user, which records the commands entered in the terminal. The first command redirects /dev/null (a special file that discards any data written to it) to temp, which creates an empty file named temp. The second command changes the timestamp of temp to match that of .bash_history (the hidden file that stores the Bash history). The third command renames temp to .bash_history, which overwrites the original file with an empty one. This effectively erases any trace of the commands executed by the user.
A penetration tester is assessing a wireless network. Although monitoring the correct channel and SSID, the tester is unable to capture a handshake between the clients and the AP. Which of the following attacks is the MOST effective to allow the penetration tester to capture a handshake?
Deauth will make the client connect again
In Java and C/C++, variable initialization is critical because:
Variable initialization is the process of assigning a value to a variable at the time of declaration. In Java and C/C++, variable initialization is critical because if a variable is not initialized, it may contain a garbage value that is unpredictable and may lead to erroneous results or runtime errors when the variable is used later in the program. For example, if a variable is used in a mathematical expression or a conditional statement, the outcome may depend on the value of the variable. If the variable is not initialized, the outcome may be different each time the program is run, or the program may crash due to an invalid operation. Therefore, it is a good practice to always initialize variables before using them, or to check if they have been initialized before using them123. Reference:
* Different Ways to Initialize a Variable in C++, GeeksforGeeks article by Anshul Aggarwal
* Static variable initialization?, Stack Overflow answer by Pawe Hajdan
* A Guide to Java Initialization, Baeldung article by Eugen Paraschiv
