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1.
Exam ACylie is the Oracle DBA for her company and now wants to track all actions on her Oracle server using auditing. What file should Cylie insert the following line into? audit_trail = true
2.
Travis is writing a website in PHP but is worried about its inherent vulnerability from session hijacking. What function could Travis use to protect against session hijacking in his PHP code?
3.
What vulnerability is the following code susceptible to? CREATE OR REPLACE PROCEDURE demo (name in VARCHAR2) as cursor_name INTEGER;
rows_processed INTEGER;
sql VARCHAR2(150);
code VARCHAR2(2);
BEGIN
...
sql := 'SELECT postal_code FROM states WHERE state_name = ''' || '''';
cursor_name := dbms_sql.open_cursor;
DBMS_SQL.PARSE(cursor_name, sql, DBMS_SQL.NATIVE);
DBMS_SQL.DEFINE_COLUMN(cursor_name, 1, code, 10);
row_processed:= DMBS_SQL.EXECUTIVE(cursor_name);
DBMS_SQL.CLOSE_CURSOR(cursor_name);
rows_processed INTEGER;
sql VARCHAR2(150);
code VARCHAR2(2);
BEGIN
...
sql := 'SELECT postal_code FROM states WHERE state_name = ''' || '''';
cursor_name := dbms_sql.open_cursor;
DBMS_SQL.PARSE(cursor_name, sql, DBMS_SQL.NATIVE);
DBMS_SQL.DEFINE_COLUMN(cursor_name, 1, code, 10);
row_processed:= DMBS_SQL.EXECUTIVE(cursor_name);
DBMS_SQL.CLOSE_CURSOR(cursor_name);
4.
When dealing with IA32 (x86) systems, how are the inputted variables treated as they enter the memory stack?
5.
William, a software developer just starting his career, was asked to create a website in PHP that would allow visitors to enter a month and a year for their birth date. The PHP code he creates has to validate the input after it is entered. If William uses the following code, what could a malicious user input to the year value to actually delete the whole website? $month = $_GET[month];
$year = $_GET['year'];
exec(cal $month $year, $result);
print
$year = $_GET['year'];
exec(cal $month $year, $result);
;
foreach($result as $r)
{
print $r
;
;
}
print
;
6.
What type of encryption will be used from the following code? Dim Publickey As Byte() =
{214,46,220,83,160,73,40,39,201 155,19,202,3,11,191,178,56,74,90,36,248,103,
18,144,170,163,145,87,54,61,34,220,222,207,
137,149,173,14,92,120,206,222,158,28,40,24,
30,16,175,108,128,35,203,118,40,121,113,125,
216,130,11,24,9,0,48,194,240,105,44,76,34,57,
249,228,125,80,38,9,136,29,117,207,139,168,181,
85,137,126,10,126,242,120,247,121,8,100,12,201,
171,38,226,193,180,190,117,177,87,143,242,213,
11,44,18,0,113,93,106,99,179,68,175,211,164,116,
64,148,226,254,172,147}
Dim Exponent As Byte() = {1,0,1}
Dim Encrypted SymmetricKey() As Byte
Dim Encrypted SymmetricIV() As Byte
Dim RSA as New RSACryptoServiceProvider()
Dim RSAKeyInfo As New RSAParameters()
RSAKeyInfo.Modules = PublicKey
RSAKeyInfo.Exponent = Exponent
RSA.ImportParameters(RSAKeyInfo)
Dim RM As New RijendaelManaged()
EncryptedSymmetricKey = RSA.Encrypt(RM.Key,False)
EncryptedSymmetricIV = RSA.Encrypt(RM.Key,False)
{214,46,220,83,160,73,40,39,201 155,19,202,3,11,191,178,56,74,90,36,248,103,
18,144,170,163,145,87,54,61,34,220,222,207,
137,149,173,14,92,120,206,222,158,28,40,24,
30,16,175,108,128,35,203,118,40,121,113,125,
216,130,11,24,9,0,48,194,240,105,44,76,34,57,
249,228,125,80,38,9,136,29,117,207,139,168,181,
85,137,126,10,126,242,120,247,121,8,100,12,201,
171,38,226,193,180,190,117,177,87,143,242,213,
11,44,18,0,113,93,106,99,179,68,175,211,164,116,
64,148,226,254,172,147}
Dim Exponent As Byte() = {1,0,1}
Dim Encrypted SymmetricKey() As Byte
Dim Encrypted SymmetricIV() As Byte
Dim RSA as New RSACryptoServiceProvider()
Dim RSAKeyInfo As New RSAParameters()
RSAKeyInfo.Modules = PublicKey
RSAKeyInfo.Exponent = Exponent
RSA.ImportParameters(RSAKeyInfo)
Dim RM As New RijendaelManaged()
EncryptedSymmetricKey = RSA.Encrypt(RM.Key,False)
EncryptedSymmetricIV = RSA.Encrypt(RM.Key,False)
7.
Peter is writing a program that has a GUI front-end and uses a MS SQL database as a backend. Peter's application will repeatedly update and call upon specific tables in the database on a regular basis. Peter wants to make sure that his program always has the ability to update the database and that no other calls or updates can touch the database tables used at the same time. How could Peter accomplish this in his application?
8.
Victor has completed writing his software application and is now working on error messages that will be displayed in case of any kind of failure or problem. He has written code that will display a pop-up message where there is an error. He has also written code that explain the error that has occurred. What is the last aspect of error messages that Victor needs to create for his application?
9.
What type of problem will result if the following statement is used? int main()
{
short int a;
unsigned short int=b32768;
a=b;
printf( a = %d, a);
b=65535;
a=b;
printf( a = %d, a);
}
{
short int a;
unsigned short int=b32768;
a=b;
printf( a = %d, a);
b=65535;
a=b;
printf( a = %d, a);
}
10.
What would be the result of the following code?
#include
#include
int main(int argc, char *argv[])
{
char *input=malloc(20);
char *output=malloc(20);
strcpy(output, normal output);
strcpy(input, argv[1]);
printf(input at %p: %s\n, input, input);
printf(output at %p: %s\n, output, output);
printf(\n\n%s\n, output);
}
#include
int main(int argc, char *argv[])
{
char *input=malloc(20);
char *output=malloc(20);
strcpy(output, normal output);
strcpy(input, argv[1]);
printf(input at %p: %s\n, input, input);
printf(output at %p: %s\n, output, output);
printf(\n\n%s\n, output);
}