20 Jun 2012

Secure Coding Quiz

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Secure Coding Quiz

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Question 1
For limited input type, what security measure is most viable as input validation?
A
Prepared Statements
B
Create a list of legitimate values that a user is allowed to specify
C
Blacklist: Create a list of known bad values
D
Output Encoding
Question 2
Consider the scenario where a developer uses a cookie to count failed login attempts to implement account lockout against a brute force attack. How can this measure be bypassed?
A
User can manipulate the cookie
B
Attacker will attempt a session fixation attack
C
Account Lockout will cause a denial of service thus helping the attacker
Question 3
For a centralized input validation component, what is the area at which you redirect input data for validation?
A
Client Side Form
B
Trust Boundary
C
At the database
D
At the communication medium
Question 4
Before embedding data into an HTTP response header, validating input for CR/LFs would help mitigate against:
A
Cross Site Request Forgery
B
HTTP Response Splitting
C
Brute Force Attack
D
Remote File Inclusion
Question 5
For a web mail application that handles form input and displays them in the browser, what threat are you at risk of?
A
Remote File Inclusion
B
CSRF
C
SQL Injection
D
XSS
Question 6
Why do you require to change the Session ID after Login?
A
To prevent XSS
B
To prevent Session Fixation
C
To Prevent SQL Injection
D
To Prevent Cross Site Request Forgery
Question 7
Which of the following should be avoided as a security measure?
A
Blacklisting
B
Encryption
C
Whitelisting
D
Parameterized Queries
Question 8
Best practice for secure coding against SQL Injection attacks?
A
Database hardening
B
Use of Parameterized Queries.
C
Lowering application privileges
D
Use of Stored Procedures
Question 9
For output data as input to another module of the application or to the underlying OS, what would be appropriate?
A
Validate all Input
B
Per-request session token
C
Transfer data using HTTP POST method
D
Implement application at least privilege
Question 10
How do you implement efficient error handling?
A
Redirect user to homepage
B
Give verbose error messages to help obtain necessary technical feedback.
C
Generic error messages without any information on the type of error or stack traces
Question 11
The use of a Canary value is a safeguard against what type of attack?
A
Denial of Service
B
Buffer Overflow by stack smashing
C
Brute Force
D
Heap Overflow
Question 12
Failure of handling of concurrent requests by a process dependent on a sequence or timing of events leads to:
A
Brute Force Attack
B
SQL Injection
C
Race Condition
D
Session Fixation
Question 13
The best way to implement input validation is by:
A
Encrypted communications
B
Server Side Blacklisting
C
Client Side Input Validation
D
Server Side Whitelisting
Question 14
What is the practice of encoding data to a common character set before validation formally known as?
A
Input Validation
B
Canonicalization
C
Encryption
D
Sanitization
Question 15
To harden your system against a Path Traversal attack, the following is considered a good practice
A
Generate a new session identifier to force change from HTTP to HTTPS and deactivate the old one.
B
Transfer data in a POST request
C
Use a chrooted environment on the directory containing your application files
D
Using Parameterized Queries
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