A forensic analyst suspects that a buffer overflow exists in a kernel module. The analyst executes the following command:
dd if=/dev/ram of=/tmp/mem/dmp
The analyst then reviews the associated output:
^34^#AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA/bin/bash^21^03#45
However, the analyst is unable to find any evidence of the running shell. Which of the following of the MOST likely reason the analyst cannot find a process ID for the shell?
Correct Answer:
B
The director of sales asked the development team for some small changes to increase the usability of an application used by the sales team. Prior security reviews of the code showed no significant vulnerabilities, and since the changes were small, they were given a peer review and then pushed to the live environment. Subsequent vulnerability scans now show numerous flaws that were not present in the previous versions of the code. Which of the following is an SDLC best practice that should have been followed?
Correct Answer:
B
A security technician is incorporating the following requirements in an RFP for a new SIEM: New security notifications must be dynamically implemented by the SIEM engine
The SIEM must be able to identify traffic baseline anomalies
Anonymous attack data from all customers must augment attack detection and risk scoring
Based on the above requirements, which of the following should the SIEM support? (Choose two.)
Correct Answer:
BD
The Chief Information Officer (CIO) is reviewing the IT centric BIA and RA documentation. The documentation shows that a single 24 hours downtime in a critical business function will cost the business $2.3 million. Additionally, the business unit which depends on the critical business function has determined that there is a high probability that a threat will materialize based on historical data. The CIO’s budget does not allow for full system hardware replacement in case of a catastrophic failure, nor does it allow for the purchase of additional compensating controls. Which of the following should the CIO recommend to the finance director to minimize financial loss?
Correct Answer:
B
To transfer the risk is to defilect it to a third party, by taking out insurance for example. Incorrect Answers:
A: Mitigation is not an option as the CIO’s budget does not allow for the purchase of additional compensating controls.
C: Avoiding the risk is not an option as the business unit depends on the critical business function. D: Accepting the risk would not reduce financial loss.
References:
Gregg, Michael, and Billy Haines, CASP CompTIA Advanced Security Practitioner Study Guide, John Wiley & Sons, Indianapolis, 2012, p. 218
Customers are receiving emails containing a link to malicious software. These emails are subverting spam filters. The email reads as follows:
Delivered-To: customer@example.com Received: by 10.14.120.205
Mon, 1 Nov 2010 11:15:24 -0700 (PDT)
Received: by 10.231.31.193
Mon, 01 Nov 2010 11:15:23 -0700 (PDT)
Return-Path:
Received: from 127.0.0.1 for
Received: by smtpex.example.com (SMTP READY) with ESMTP (AIO); Mon, 01 Nov 2010 13:15:14 -0500
Received: from 172.18.45.122 by 192.168.2.55; Mon, 1 Nov 2010 13:15:14 -0500
From: Company
To: "customer@example.com"
Subject: New Insurance Application Thread-Topic: New Insurance Application
Please download and install software from the site below to maintain full access to your account. www.examplesite.com
Additional information: The authorized mail servers IPs are 192.168.2.10 and 192.168.2.11. The network’s subnet is 192.168.2.0/25.
Which of the following are the MOST appropriate courses of action a security administrator could take to eliminate this risk? (Select TWO).
Correct Answer:
BD
In this question, we have an unauthorized mail server using the IP: 192.168.2.55.
Blocking port 25 on the firewall for all unauthorized mail servers is a common and recommended security step. Port 25 should be open on the firewall to the IP addresses of the authorized email servers only (192.168.2.10 and 192.168.2.11). This will prevent unauthorized email servers sending email or receiving and relaying email.
Email servers use SMTP (Simple Mail Transfer Protocol) to send email to other email servers. Shutting down the SMTP service on the unauthorized mail server is effectively disabling the mail server functionality of the unauthorized server.
Incorrect Answers:
A: You shouldn’t worry about identifying the origination point for the malicious activity on the unauthorized mail server. There isn’t much you could do about the remote origination point even if you did identify it. You have an ‘unauthorized’ mail server. That is what you should be dealing with. C: In this question, the email was received by the unauthorized email server (192.168.2.55) ready to be collected by the recipient. The email was not relayed (forwarded) to other email servers. Disabling open relay functionality will not stop the emails. You need to disable all email (SMTP) functionality of the unauthorized server, not just relaying.
E: STARTTLS enables TLS encryption on communications with the spam filter. It will do nothing to prevent the usage of the unauthorized email server.
References: https://en.wikipedia.org/wiki/Simple_Mail_Transfer_ProtHYPERLINK "https://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol"ocol
https://www.arclab.com/en/kb/email/how-to-read-and-analyze-the-email-header-fields-spfdkim. html
