CSSLP ISC Exam Lab Questions

ISO 27006 is an information security standard developed by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It is entitled as "Information technology - Security techniques - Requirements for bodies providing audit and certification of information security management systems". The ISO 27006 standard provides guidelines for accreditation of an organization which is concerned with certification and registration related to ISMS. The ISO 27006 standard contains the following elements: Scope Normative references Terms and definitions Principles General requirements Structural requirements Resource requirements Information requirements Process requirements Management system requirements for certification bodies Information security risk communication Information security risk monitoring and review Annex A. Defining the scope of process Annex B. Asset valuation and impact assessment Annex C. Examples of typical threats Annex D. Vulnerabilities and vulnerability assessment methods Annex E. Information security risk assessment (ISRA) approaches Answer: C is incorrect. The ISO 27003 standard provides guidelines for implementing an ISMS (Information Security Management System). Answer: D is incorrect. The ISO 27004 standard provides guidelines on specifications and use of measurement techniques for the assessment of the effectiveness of an implemented information security management system and controls. Answer: B is incorrect. The ISO 27005 standard provides guidelines for information security risk management.

Cryptanalysis is the process of analyzing cipher text and finding weaknesses in cryptographic algorithms. These weaknesses can be used to decipher the cipher text without knowing the secret key. Answer: C is incorrect. Kerberos is an industry standard authentication protocol used to verify user or host identity. Kerberos v5 authentication protocol is the default authentication service for Windows 2000. It is integrated into the administrative and security model, and provides secure communication between Windows 2000 Server domains and clients. Answer: A is incorrect. A cryptographer is a person who is involved in cryptography.

Answer: B is incorrect. Cryptography is a branch of computer science and mathematics. It is used for protecting information by encoding it into an unreadable format known as cipher text.

A distributed denial of service (DDoS) attack targets a Web server with multiple compromised computers that are simultaneously sending hundreds of FIN packets with spoofed IP source IP addresses. DDoS attack occurs when multiple compromised systems flood the bandwidth or resources of a targeted system, usually one or more Web servers. These systems are compromised by attackers using a variety of methods. It is an attempt to make a computer resource unavailable to its intended users. This type of attack can cause the following to occur: Saturate network resources. Disrupt connections between two computers, thereby preventing communications between services. Disrupt services on a specific computer. Answer: D is incorrect. Dictionary attack is a type of password guessing attack. This type of attack uses a dictionary of common words to find out the password of a user. It can also use common words in either upper or lower case to find a password. There are many programs available on the Internet to automate and execute dictionary attacks. Answer: C is incorrect. In an insertion attack, an IDS accepts a packet and assumes that the host computer will also accept it. But in reality, when a host system rejects the packet, the IDS accepts the attacking string that will exploit vulnerabilities in the IDS. Such attacks can badly infect IDS signatures and IDS signature analysis. Answer: B is incorrect. An evasion attack is one in which an IDS rejects a malicious packet but the host computer accepts it. Since an IDS has rejected it, it does not check the contents of the packet. Hence, using this technique, an attacker can exploit the host computer. In many cases, it is quite simple for an attacker to send such data packets that can easily perform evasion attacks on an IDSs.

CSRF (Cross-Site Request Forgery) is a malicious exploit of a website, whereby unauthorized commands are transmitted from a user trusted by the website. It is also known as a one-click attack or session riding. CSRF occurs when a user is tricked by an attacker into activating a request in order to perform some unauthorized action. It increases data loss and malicious code execution. Answer: A is incorrect. Cross-site scripting (XSS) is a type of computer security vulnerability typically found in web applications which enable malicious attackers to inject client-side script into web pages viewed by other users. An exploited cross-site scripting vulnerability can be used by attackers to bypass access controls, such as the same origin policy. Cross-site scripting carried out on websites were roughly 80% of all security vulnerabilities documented by Symantec as of 2007. Their impact may range from a petty nuisance to a significant security risk, depending on the sensitivity of the data handled by the vulnerable site, and the nature of any security mitigations implemented by the site owner. Answer: C is incorrect. A side channel attack is based on information gained from the physical implementation of a cryptosystem, rather than brute force or theoretical weaknesses in the algorithms (compare cryptanalysis). For example, timing information, power consumption, electromagnetic leaks or even sound can provide an extra source of information which can be exploited to break the system. Many side- channel attacks require considerable technical knowledge of the internal operation of the system on which the cryptography is implemented. Answer: B is incorrect. Injection flaws are the vulnerabilities where a foreign agent illegally uses a sub-system. They are the vulnerability holes that can be used to attack a database of Web applications. It is the most common technique of attacking a database. Injection occurs when user-supplied data is sent to an interpreter as part of a command or query. The attacker's hostile data tricks the interpreter into executing involuntary commands or changing data. Injection flaws include XSS (HTML Injection) and SQL Injection.