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NEW QUESTION: 1
The security administrator finds unauthorized tables and records, which were not present before, on a
Linux database server. The database server communicates only with one web server, which connects to the database server via an account with SELECT only privileges. Web server logs show the following:
9 0.76.165.40 - - [08/Mar/2014:10:54:04) "GET calendar.php?create%20table%20hidden HTIP/1.1" 200
5 724
9 0.76.165.40- - [08/Mar/2014:10:54:05) "GET . ./../../root/.bash_history HTIP/1.1" 200 5724
9 0.76.165.40 - - [08/Mar/2014:10:54:04) "GET index.php?user=<script>Create</script> HTIP/1.1" 200
5 724
The security administrator also inspects the following file system locations on the database server using the command 'Is -al /root' drwxrwxrwx 11 root root 4096 Sep 28 22:45 .
drwxr-xr-x 25 root root 4096 Mar 8 09:30 ..
-rws------ 25 root root 4096 Mar 8 09:30 .bash_history
-rw------- 25 root root 4096 Mar 8 09:30 .bash_history
-rw------- 25 root root 4096 Mar 8 09:30 .profile
-rw------- 25 root root 4096 Mar 8 09:30 .ssh
Which of the following attacks was used to compromise the database server and what can the security administrator implement to detect such attacks in the future? (Select TWO).
A. Update crontab with: find/\( -perm -4000 \) -type f-printO I xargs -0 Is -I I email.sh
B. Set an account lockout policy
C. SQL injection
D. Privilege escalation
E. Using input validation, ensure the following characters are sanitized:<>
F. Cross-site scripting
G. Brute force attack
H. Implement the following PHP directive: $clean_user_input = addslashes($user_input)
Answer: A,D
Explanation:
This is an example of privilege escalation.
Privilege escalation is the act of exploiting a bug, design flaw or configuration oversight in an operating system or software application to gain elevated access to resources that are normally protected from an application or user.
The question states that the web server communicates with the database server via an account with
SELECT only privileges. However, the privileges listed include read, write and execute (rwx). This suggests the privileges have been 'escalated'.
Now that we know the system has been attacked, we should investigate what was done to the system.
The command "Update crontab with: find / \( -perm -4000 \) -type f -printO I xargs -0 Is -I I email.sh" is used to find all the files that are setuid enabled. Setuid means set user ID upon execution. If the setuid bit is turned on for a file, the user executing that executable file gets the permissions of the individual or group that owns the file.
Incorrect Answers:
B: A brute force attack is used to guess passwords. This is not an example of a brute force attack.
C: SQL injection is a code injection technique, used to attack data-driven applications, in which malicious
SQL statements are inserted into an entry field for execution (e.g. to dump the database contents to the attacker). This is not an example of a SQL Injection attack.
D: Cross-site scripting (XSS) is a type of computer security vulnerability typically found in Web applications. XSS enables attackers to inject client-side script into Web pages viewed by other users.
This is not an example of an XSS attack.
E: Sanitizing just the <> characters will not prevent such an attack. These characters should not be sanitized in a web application.
G: Adding slashes to the user input will not protect against the input; it will just add slashes to it.
H: An account lockout policy is useful to protect against password attacks. After a number of incorrect passwords, the account will lockout. However, the attack in this question is not a password attack so a lockout policy won't help.
NEW QUESTION: 2
The posture run-time services encapsulates this protocol services, and all the interactions that happen between the NAC Agents?
A. DEFAULT
B. MAB
C. DOT1X
D. SWISS
Answer: D
NEW QUESTION: 3
All of the following are part of scope baseline EXCEPT:
A. Product analysis
B. WBS dictionary
C. WBS
D. Project scope statement
Answer: A