A security manager looked at various logs while investigating a recent security breach in the data center from an external source. Each log below was collected from various security devices compiled from a report through the company's security information and event management server.
Logs:
Log 1:
Feb 5 23:55:37.743: %SEC-6-IPACCESSLOGS: list 10 denied 10.2.5.81 3 packets Log 2:
HTTP://www.company.com/index.php?user=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa Log 3:
Security Error Alert
Event ID 50: The RDP protocol component X.224 detected an error in the protocol stream and has disconnected the client Log 4:
Encoder oe = new OracleEncoder ();
String query = "Select user_id FROM user_data WHERE user_name = ' "
+ oe.encode ( req.getParameter("userID") ) + " ' and user_password = ' "
+ oe.encode ( req.getParameter("pwd") ) +" ' ";
Vulnerabilities
Buffer overflow
SQL injection
ACL
XSS
Which of the following logs and vulnerabilities would MOST likely be related to the security breach? (Select TWO).
Correct Answer: B,E
Log 2 indicates that the security breach originated from an external source. And the vulnerability that can be associated with this security breach is a buffer overflow that happened when the amount of data written into the buffer exceeded the limit of that particular buffer.
Incorrect Answers:
A: Log 1 is not indicative of a security breach from an outside source
C: Log 3 will not be displayed if the breach in security came from an outside source.
D: Log 4 does not indicate an outside source responsible for the security breach.
F: The access control lists are mainly used to configure firewall rules and is thus not related to the security breach.
G: XSS would be indicative of an application issue and not a security breach that originated from the outside.
H: A SQL Injection is a type of attack that makes use of a series of malicious SQL queries in an attempt to directly manipulates the SQL database. This is not necessarily a security breach that originated from the outside.
References:
Gregg, Michael, and Billy Haines, CASP CompTIA Advanced Security Practitioner Study Guide, John Wiley & Sons, Indianapolis, 2012, pp. 110-112, 151. 153, 162