![]() ![]() Since the flaw exists in the hardware, it is very difficult to fundamentally fix the problem, unless we change the CPUs in our computers. We launch this attack to modify /etc/passwd file - which should not be modified without appropriate privileges and methods.ĭescription: In both of these attacks, we exploit the vulnerability in the hardware protection mechanism implemented in most CPUs. The task is to exploit this vulnerability and gain root privilege.ĭescription: A case of race condition vulnerability that affected Linux-based operating systems and Android. If a privileged program has a race-condition vulnerability, attackers can run a parallel process to “race” against the privileged program, with an intention to change the behaviors of the program. The task in this lab is to develop a scheme to exploit the buffer overflow vulnerability and finally gain the root privilege.ĭescription: In this attack we launched the shellshock attack on a remote web server and then gained the reverse shell by exploiting the vulnerability.ĭescription: A race condition occurs when multiple processes access and manipulate the same data concurrently, and the outcome of the execution depends on the particular order in which the access takes place. This vulnerability can be utilized by a malicious user to alter the flow control of the program, even execute arbitrary pieces of code. The lab also demonstrates the effect of environment variables on the behavior of Set-UID programs.ĭescription: Buffer overflow is defined as the condition in which a program attempts to write data beyond the boundaries of pre-allocated fixed-length buffers. This can be very well exploited, as seen in the lab. For example, if the program's owner is root, then when anyone runs this program, the program gains the root's privileges during its execution. When a Set-UID program runs, it assumes the owner's privileges. Environment Variable and Set-UID Vulnerabilityĭescription: Set-UID is an important security mechanism in Unix operating systems.The course is well structured to understand the concepts of Computer Security. The labs were completed as a part of the Computer Security (CSE643) course at Syracuse University. The link contains a document that can be used to set up the VM without any issues. ![]() Step 3: Use the Virtual Machine Hard Disk file to setup your VM. These instructions will get you to set up the environment on your local machine to perform these attacks. All the labs are presented in the form of PDF files, containing some screenshots. * exploit.These labs cover some of the most common vulnerabilities and attacks exploiting these vulnerabilities. * The following statement has a buffer overflow problem */ * Our task is to exploit this vulnerability */ * This program has a buffer overflow vulnerability. I was wondering if someone could point me in the right direction. I'm trying to complete my homework assignment on a buffer overflow attack to get into the root shell, but everytime I run my stack.c its giving me a segmentation fault. ![]()
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