A hacker has managed to gain access to a Linux host and stolen the password file from /etc/passwd. How can he use it? He can open it and read the user ids and corresponding passwords. The password file does not contain the passwords themselves. He cannot read it because it is encrypted. The file reveals the passwords to the root user only.

A hacker has managed to gain access to a Linux host and stolen the password file from /etc/passwd. How can he use it? He can open it and read the user ids and corresponding passwords. The password file does not contain the passwords themselves. He cannot read it because it is encrypted. The file reveals the passwords to the root user only.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Assume a TELNET session is using the character mode. How many characters are sent back and forth between the client and server in this session to rename a file from name “my_file1.txt” to “my_file2.txt” in Linux environment? Briefly explain your answer and show how you arrive to that number.
Write a complete bash script that monitors who logs in and logs out of the current CSELinux machine (e.g., cse01, cse02, etc.) where the script is running. In particular, youwill check the status of who is logged in every 10 seconds and report each user ID thatlogs in or logs out during that time frame. Note that there may be more than one userthat logs in or out duringthis interval. You must include the host name when reportingthe user ID information. In addition, you will install a custom signal handler to trap theSIGINT(i.e.,^C)onetimebeforeyouareabletoterminatethescriptwiththeSIGINT.You will also print out the current date and time and report the number of users loggedin,even if there are no changes (i.e.,no one logged in or out during the interval). HOW TO DO THIS? PLEASE EXPLAIN WITH ANSWER!!
In what situation will the hash values be shown differently? Using necessary tools in Kali Linux, show how can two files have different hash values إرفاق ملف استعراض جهاز الكومليوتر
Can you explain what a "reverse shell" is? What does an attacker do right away when they get a shell prompt from a remote system? Where can a hacker use a specific command to confirm they are connected remotely to the Security Onion's shell in the lab?
In Mac OS X, what file can an attacker replace with a no-password-requirement version to allow all scripted actions to be performed as root? Select one: a. /Library/InputManagers b. /etc/sudoers c. /groups/wheel d. /tmp/uid
What is a reverse shell defined as? What does an attacker do right away when they get a shell prompt from a remote system? What command is used in the lab to confirm that the attacker has a remote connection to the shell of the Security Onion?
What’s the correct answer
On the cmsy255 server, write a bash shell script called usrinfo that displays information about a specified user. Make sure the script file is executable. Also make sure that you can run the script without having to specify the directory. For example, you should NOT have to enter ./usrinfo in order for it to run.
How can you characterize a shell that is flipped around? When an attacker gains access to a remote system and sees a shell prompt, what is the first thing they do? In the lab, what command is used to verify that an attacker has established a remote connection to the Security Onion shell?
Provide an example of two daemon processes found on Linux systems. What type of service does the /etc/fstab file provide? When is the /etc/fstab implemented? Write the command line to access the online information for the cp command and list the type of information found about the command.
Is it possible to describe a "reverse shell"? When an attacker receives a shell prompt from a remote system, what is the first thing they do? Where can an attacker verify that they have a remote connection to the Security Onion's shell in the lab by using a certain command
Can you explain what a "reverse shell" is? What does an attacker do right away when they get a shell prompt from a remote system? Where can a hacker use a specific command to confirm they are connected remotely to the Security Onion's shell in the lab?

SEE MORE QUESTIONS

Recommended textbooks for you

Database System Concepts

Computer Science

ISBN:

9780078022159

Author:

Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:

McGraw-Hill Education

Starting Out with Python (4th Edition)

Computer Science

ISBN:

9780134444321

Author:

Tony Gaddis

Publisher:

PEARSON

Digital Fundamentals (11th Edition)

Computer Science

ISBN:

9780132737968

Author:

Thomas L. Floyd

Publisher:

PEARSON

C How to Program (8th Edition)

Computer Science

ISBN:

9780133976892

Author:

Paul J. Deitel, Harvey Deitel

Publisher:

PEARSON

Database Systems: Design, Implementation, & Manag…

Computer Science

ISBN:

9781337627900

Author:

Carlos Coronel, Steven Morris

Publisher:

Cengage Learning

Programmable Logic Controllers

Computer Science

ISBN:

9780073373843

Author:

Frank D. Petruzella

Publisher:

McGraw-Hill Education

Database System Concepts

Computer Science

ISBN:

9780078022159

Author:

Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:

McGraw-Hill Education

Starting Out with Python (4th Edition)

Computer Science

ISBN:

9780134444321

Author:

Tony Gaddis

Publisher:

PEARSON

Digital Fundamentals (11th Edition)

Computer Science

ISBN:

9780132737968

Author:

Thomas L. Floyd

Publisher:

PEARSON

C How to Program (8th Edition)

Computer Science

ISBN:

9780133976892

Author:

Paul J. Deitel, Harvey Deitel

Publisher:

PEARSON

Database Systems: Design, Implementation, & Manag…

Computer Science

ISBN:

9781337627900

Author:

Carlos Coronel, Steven Morris

Publisher:

Cengage Learning

Programmable Logic Controllers

Computer Science

ISBN:

9780073373843

Author:

Frank D. Petruzella

Publisher:

McGraw-Hill Education

SEE MORE TEXTBOOKS

GET THE APP

About FAQ Academic Integrity Sitemap Document Sitemap

Contact Bartleby Contact Research (Essays)High School Textbooks Literature Guides Concept Explainers by Subject Essay Help Mobile App

GET THE APP

Privacy

Your CA Privacy Rights

Your NV Privacy Rights

Cookie Policy

About Ads

Manage My Data

bartleby, a Learneo, Inc. business

		He can open it and read the user ids and corresponding passwords.
		The password file does not contain the passwords themselves.
		He cannot read it because it is encrypted.
		The file reveals the passwords to the root user only.