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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:
90.76.165.40 - - [08/Mar/2014:10:54:04] "GET
calendar.php?create%20table%20hiddenHTTP/1.1" 200 5724
90.76.165.40 - - [08/Mar/2014:10:54:05]
"GET ../../../root/.bash_history HTTP/1.1" 2005724
90.76.165.40 - - [08/Mar/2014:10:54:04] "GET
index.php?user=<script>Create</script>HTTP/1.1" 200 5724
The security administrator also inspects the following file system locations on the database server using the command 'ls -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. SQL injection
B. Privilege escalation
C. Using input validation, ensure the following characters are sanitized: <>
D. Update crontab with: find / \( -perm -4000 \) -type f -print0 | xargs -0 ls -l | email.sh
E. Set an account lockout policy
F. Brute force attack
G. Cross-site scripting
H. Implement the following PHP directive: $clean_user_input = addslashes($user_input)
Answer: B,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 print0 | xargs -0 ls l | 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.
NEW QUESTION: 2
This question requires that you evaluate the underlined text to determine if it is correct.
When you are implementing a software as a service (SaaS) solution, you are responsible for configuring
high availability.
Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed". If
the statement is incorrect, select the answer choice that makes the statement correct.
A. defining scalability rules
B. configuring the SaaS solution
C. installing the SaaS solution
D. No change is needed.
Answer: B
NEW QUESTION: 3
While excepting a business method in a stateless session bean the container rolls back the method's transaction. Which three are possible causes for the container's behavior? (Choose three.)
A. The business method throws a checked exception of a class type that is marked with the @ApplicationException annotation with the rollback element value true.
B. The business method throws a unchecked exception of a class type that is marked with the @ApplicationException annotation with the rollback element value true.
C. The bean uses container-managed transactions and invokes EJBContext.getRollbackOnly.
D. The bean uses container-managed transactions and invokes EJBContext.setRollbackOnly.
E. The bean uses container-managed transactions and throws a checked exception of a class type that is marked with the @ApplicationException annotation with the rollback element value false.
F. The business method throws a java.lang.NullPointerException.
Answer: A,D,E
Explanation:
A:setRollbackOnly
Mark the current transaction for rollback. The transaction will become permanently marked for rollback. A transaction marked for rollback can never commit. Only enterprise beans with container-managed transactions are allowed to use this method.
Note:
*In a stateless session bean with bean-managed transactions, a business method must commit or roll back a transaction before returning.
*Bean-Managed Transactions In bean-managed transaction demarcation, the code in the session or message-driven bean explicitly marks the boundaries of the transaction. Although beans with container-managed transactions require less coding, they have one limitation: When a method is executing, it can be associated with either a single transaction or no transaction at all. If this limitation will make coding your bean difficult, you should consider using bean-managed transactions.
*(incorrect)Unchecked runtime exceptions represent conditions that, generally speaking, reflect
errors in your program's logic and cannot be reasonably recovered from at run time.
Incorrect: B:getRollbackOnly
Test if the transaction has been marked for rollback only. An enterprise bean instance can use this operation, for example, to test after an exception has been caught, whether it is fruitless to continue computation on behalf of the current transaction. Only enterprise beans with container-managed transactions are allowed to use this method.