312-50 Exam - Ethical Hacking and Countermeasures (CEHv6)

certleader.com

Q1. There are two types of honeypots- high and low interaction. Which of these describes a low interaction honeypot? 

Select the best answers. 

A. Emulators of vulnerable programs 

B. More likely to be penetrated 

C. Easier to deploy and maintain 

D. Tend to be used for production 

E. More detectable 

F. Tend to be used for research 

Answer: ACDE

Explanations: 

A low interaction honeypot would have emulators of vulnerable programs, not the real programs. 

A high interaction honeypot is more likely to be penetrated as it is running the real program and is more vulnerable than an emulator. 

Low interaction honeypots are easier to deploy and maintain. Usually you would just use a program that is already available for download and install it. Hackers don't usually crash or destroy these types of programs and it would require little maintenance. 

A low interaction honeypot tends to be used for production. 

Low interaction honeypots are more detectable because you are using emulators of the real programs. Many hackers will see this and realize that they are in a honeypot. 

A low interaction honeypot tends to be used for production. A high interaction honeypot tends to be used for research. 

Q2. When Jason moves a file via NFS over the company's network, you want to grab a copy of it by sniffing. Which of the following tool accomplishes this? 

A. macof 

B. webspy 

C. filesnarf 

D. nfscopy 

Answer:

Explanation: Filesnarf - sniff files from NFS traffic 

OPTIONS 

-i interface 

Specify the interface to listen on. 

-v "Versus" mode. Invert the sense of matching, to 

select non-matching files. 

pattern 

Specify regular expression for filename matching. 

expression 

Specify a tcpdump(8) filter expression to select 

traffic to sniff. 

SEE ALSO 

Dsniff, nfsd 

Q3. Eve is spending her day scanning the library computers. She notices that Alice is using a computer whose port 445 is active and listening. Eve uses the ENUM tool to enumerate Alice machine. From the command prompt, she types the following command. 

For /f "tokens=1 %%a in (hackfile.txt) do net use * \\10.1.2.3\c$ /user:"Administrator" %%a 

What is Eve trying to do? 

A. Eve is trying to connect as an user with Administrator privileges 

B. Eve is trying to enumerate all users with Administrative privileges 

C. Eve is trying to carry out a password crack for user Administrator 

D. Eve is trying to escalate privilege of the null user to that of Administrator 

Answer: C

Explanation: Eve tries to get a successful login using the username Administrator and passwords from the file hackfile.txt. 

Q4. Clive is conducting a pen-test and has just port scanned a system on the network. He has identified the operating system as Linux and been able to elicit responses from ports 23, 25 and 53. He infers port 23 as running Telnet service, port 25 as running SMTP service and port 53 as running DNS service. The client confirms these findings and attests to the current availability of the services. When he tries to telnet to port 23 or 25, he gets a blank screen in response. On typing other commands, he sees only blank spaces or underscores symbols on the screen. What are you most likely to infer from this? 

A. The services are protected by TCP wrappers 

B. There is a honeypot running on the scanned machine 

C. An attacker has replaced the services with trojaned ones 

D. This indicates that the telnet and SMTP server have crashed 

Answer: A

Explanation: TCP Wrapper is a host-based network ACL system, used to filter network access to Internet protocol services run on (Unix-like) operating systems such as Linux or BSD. It allows host or subnetwork IP addresses, names and/or ident query replies, to be used as tokens on which to filter for access control purposes. 

Q5. Exhibit: 

Given the following extract from the snort log on a honeypot, what service is being exploited? : 

A. FTP 

B. SSH 

C. Telnet 

D. SMTP 

Answer:

Explanation: The connection is done to 172.16.1.104:21. 

Q6. What is Form Scalpel used for? 

A. Dissecting HTML Forms 

B. Dissecting SQL Forms 

C. Analysis of Access Database Forms 

D. Troubleshooting Netscape Navigator 

E. Quatro Pro Analysis Tool 

Answer: A

Explanation: Form Scalpel automatically extracts forms from a given web page and splits up all fields for editing and manipulation. 

Q7. What did the following commands determine? 

C : user2sid \earth guest S-1-5-21-343818398-789336058-1343024091-501 

C:sid2user 5 21 343818398 789336058 1343024091 500 Name is Joe Domain is EARTH 

A. That the Joe account has a SID of 500 

B. These commands demonstrate that the guest account has NOT been disabled 

C. These commands demonstrate that the guest account has been disabled 

D. That the true administrator is Joe 

E. Issued alone, these commands prove nothing 

Answer: D

Explanation: One important goal of enumeration is to determine who the true administrator is. In the example above, the true administrator is Joe. 

Q8. Which of the following buffer overflow exploits are related to Microsoft IIS web server? (Choose three) 

A. Internet Printing Protocol (IPP) buffer overflow 

B. Code Red Worm 

C. Indexing services ISAPI extension buffer overflow 

D. NeXT buffer overflow 

Answer: ABC

Explanation: Both the buffer overflow in the Internet Printing Protocol and the ISAPI extension buffer overflow is explained in Microsoft Security Bulletin MS01-023. The Code Red worm was a computer worm released on the Internet on July 13, 2001. It attacked computers running Microsoft's IIS web server. 

Q9. What makes web application vulnerabilities so aggravating? (Choose two) 

A. They can be launched through an authorized port. 

B. A firewall will not stop them. 

C. They exist only on the Linux platform. 

D. They are detectable by most leading antivirus software. 

Answer: AB

Explanation: As the vulnerabilities exists on a web server, incoming traffic on port 80 will probably be allowed and no firewall rules will stop the attack. 

Q10. Exhibit: 

Based on the following extract from the log of a compromised machine, what is the hacker really trying to steal? 

A. har.txt 

B. SAM file 

C. wwwroot 

D. Repair file 

Answer:

Explanation: He is actually trying to get the file har.txt but this file contains a copy of the SAM file.