public void bad() throws Throwable {
String data;
data = ""; /* Initialize data */
/* Read data from a database */
{
Connection connection = null;
PreparedStatement preparedStatement = null;
ResultSet resultSet = null;
try {
/* setup the connection */
connection = IO.getDBConnection();
/* prepare and execute a (hardcoded) query */
preparedStatement = connection.prepareStatement("select name from users where id=0");
resultSet = preparedStatement.executeQuery();
/* POTENTIAL FLAW: Read data from a database query resultset */
data = resultSet.getString(1);
} catch (SQLException exceptSql) {
IO.logger.log(Level.WARNING, "Error with SQL statement", exceptSql);
} finally {
/* Close database objects */
try {
if (resultSet != null) {
resultSet.close();
}
} catch (SQLException exceptSql) {
IO.logger.log(Level.WARNING, "Error closing ResultSet", exceptSql);
}
try {
if (preparedStatement != null) {
preparedStatement.close();
}
} catch (SQLException exceptSql) {
IO.logger.log(Level.WARNING, "Error closing PreparedStatement", exceptSql);
}
try {
if (connection != null) {
connection.close();
}
} catch (SQLException exceptSql) {
IO.logger.log(Level.WARNING, "Error closing Connection", exceptSql);
}
}
}
LinkedList<String> dataLinkedList = new LinkedList<String>();
dataLinkedList.add(0, data);
dataLinkedList.add(1, data);
dataLinkedList.add(2, data);
(new CWE23_Relative_Path_Traversal__database_73b()).badSink(dataLinkedList);
}
/* uses badsource and badsink - see how tools report flaws that don't always occur */
public void bad() throws Throwable {
String data;
if (IO.staticReturnsTrueOrFalse()) {
data = ""; /* Initialize data */
/* Read data from a database */
{
Connection connection = null;
PreparedStatement preparedStatement = null;
ResultSet resultSet = null;
try {
/* setup the connection */
connection = IO.getDBConnection();
/* prepare and execute a (hardcoded) query */
preparedStatement = connection.prepareStatement("select name from users where id=0");
resultSet = preparedStatement.executeQuery();
/* POTENTIAL FLAW: Read data from a database query resultset */
data = resultSet.getString(1);
} catch (SQLException exceptSql) {
IO.logger.log(Level.WARNING, "Error with SQL statement", exceptSql);
} finally {
/* Close database objects */
try {
if (resultSet != null) {
resultSet.close();
}
} catch (SQLException exceptSql) {
IO.logger.log(Level.WARNING, "Error closing ResultSet", exceptSql);
}
try {
if (preparedStatement != null) {
preparedStatement.close();
}
} catch (SQLException exceptSql) {
IO.logger.log(Level.WARNING, "Error closing PreparedStatement", exceptSql);
}
try {
if (connection != null) {
connection.close();
}
} catch (SQLException exceptSql) {
IO.logger.log(Level.WARNING, "Error closing Connection", exceptSql);
}
}
}
} else {
/* FIX: Use a hardcoded string */
data = "foo";
}
String root;
if (System.getProperty("os.name").toLowerCase().indexOf("win") >= 0) {
/* running on Windows */
root = "C:\\uploads\\";
} else {
/* running on non-Windows */
root = "/home/user/uploads/";
}
if (data != null) {
/* POTENTIAL FLAW: no validation of concatenated value */
File file = new File(root + data);
FileInputStream streamFileInputSink = null;
InputStreamReader readerInputStreamSink = null;
BufferedReader readerBufferdSink = null;
if (file.exists() && file.isFile()) {
try {
streamFileInputSink = new FileInputStream(file);
readerInputStreamSink = new InputStreamReader(streamFileInputSink, "UTF-8");
readerBufferdSink = new BufferedReader(readerInputStreamSink);
IO.writeLine(readerBufferdSink.readLine());
} catch (IOException exceptIO) {
IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
} finally {
/* Close stream reading objects */
try {
if (readerBufferdSink != null) {
readerBufferdSink.close();
}
} catch (IOException exceptIO) {
IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO);
}
try {
if (readerInputStreamSink != null) {
readerInputStreamSink.close();
}
} catch (IOException exceptIO) {
IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO);
}
try {
if (streamFileInputSink != null) {
streamFileInputSink.close();
}
} catch (IOException exceptIO) {
IO.logger.log(Level.WARNING, "Error closing FileInputStream", exceptIO);
}
}
}
}
}
/* uses badsource and badsink */
public void bad() throws Throwable {
String data;
/* We need to have one source outside of a for loop in order
to prevent the Java compiler from generating an error because
data is uninitialized */
Logger log_bad = Logger.getLogger("local-logger");
data = ""; /* init data */
Connection conn = null;
PreparedStatement statement = null;
ResultSet rs = null;
BufferedReader buffread = null;
InputStreamReader instrread = null;
try {
/* setup the connection */
conn = IO.getDBConnection();
/* prepare the query */
statement = conn.prepareStatement("select name from users where id=?");
/* get user input for the userid */
IO.writeLine("Enter a userid to login as (number): ");
instrread = new InputStreamReader(System.in);
buffread = new BufferedReader(instrread);
int num = Integer.parseInt(buffread.readLine());
statement.setInt(1, num);
rs = statement.executeQuery();
data = rs.getString(1);
} catch (IOException ioe) {
log_bad.warning("Error with stream reading");
} finally {
/* clean up stream reading objects */
try {
if (buffread != null) {
buffread.close();
}
} catch (IOException ioe) {
log_bad.warning("Error closing buffread");
} finally {
try {
if (instrread != null) {
instrread.close();
}
} catch (IOException ioe) {
log_bad.warning("Error closing instrread");
}
}
/* clean up database objects */
try {
if (rs != null) {
rs.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing rs");
} finally {
try {
if (statement != null) {
statement.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing statement");
} finally {
try {
if (conn != null) {
conn.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing conn");
}
}
}
}
for (int for_index_i = 0; for_index_i < 0; for_index_i++) {
/* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
java.util.logging.Logger log_good = java.util.logging.Logger.getLogger("local-logger");
/* FIX: Use a hardcoded string */
data = "foo";
}
/* POTENTIAL FLAW: unvalidated or sandboxed value */
File fIn = new File(data);
if (fIn.exists() && fIn.isFile()) {
IO.writeLine(new BufferedReader(new FileReader(fIn)).readLine());
}
}
public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable {
String data;
Logger log_bad = Logger.getLogger("local-logger");
data = "";
/* parse the query string for value of 'id' */
String id_str = null;
StringTokenizer st = new StringTokenizer(request.getQueryString(), "&");
while (st.hasMoreTokens()) {
String token = st.nextToken();
int i = token.indexOf("=");
if ((i > 0) && (i < (token.length() - 1)) && (token.substring(0, i).equals("id"))) {
id_str = token.substring(i + 1);
break;
}
}
if (id_str != null) {
Connection conn = null;
PreparedStatement statement = null;
ResultSet rs = null;
try {
int id = Integer.parseInt(id_str);
conn = IO.getDBConnection();
statement = conn.prepareStatement("select * from pages where id=?");
/* FLAW: no check to see whether the user has privileges to view the data */
statement.setInt(1, id);
rs = statement.executeQuery();
data = rs.toString();
} catch (SQLException se) {
log_bad.warning("Error");
} finally {
/* clean up database objects */
try {
if (rs != null) {
rs.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing rs");
} finally {
try {
if (statement != null) {
statement.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing statement");
} finally {
try {
if (conn != null) {
conn.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing conn");
}
}
}
}
}
Class<?> c = Class.forName(data); /* FLAW: loading arbitrary class */
Object instance = c.newInstance();
IO.writeLine(instance.toString());
}
/* uses badsource and badsink - see how tools report flaws that don't always occur */
public void bad() throws Throwable {
String data;
if (IO.static_returns_t_or_f()) {
Logger log_bad = Logger.getLogger("local-logger");
data = ""; /* init data */
Connection conn = null;
PreparedStatement statement = null;
ResultSet rs = null;
BufferedReader buffread = null;
InputStreamReader instrread = null;
try {
/* setup the connection */
conn = IO.getDBConnection();
/* prepare the query */
statement = conn.prepareStatement("select name from users where id=?");
/* get user input for the userid */
IO.writeLine("Enter a userid to login as (number): ");
instrread = new InputStreamReader(System.in);
buffread = new BufferedReader(instrread);
int num = Integer.parseInt(buffread.readLine());
statement.setInt(1, num);
rs = statement.executeQuery();
data = rs.getString(1);
} catch (IOException ioe) {
log_bad.warning("Error with stream reading");
} finally {
/* clean up stream reading objects */
try {
if (buffread != null) {
buffread.close();
}
} catch (IOException ioe) {
log_bad.warning("Error closing buffread");
} finally {
try {
if (instrread != null) {
instrread.close();
}
} catch (IOException ioe) {
log_bad.warning("Error closing instrread");
}
}
/* clean up database objects */
try {
if (rs != null) {
rs.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing rs");
} finally {
try {
if (statement != null) {
statement.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing statement");
} finally {
try {
if (conn != null) {
conn.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing conn");
}
}
}
}
} else {
java.util.logging.Logger log_good = java.util.logging.Logger.getLogger("local-logger");
/* FIX: Use a hardcoded string */
data = "foo";
}
String root = "C:\\uploads\\";
/* POTENTIAL FLAW: no validation of concatenated value */
File fIn = new File(root + data);
if (fIn.exists() && fIn.isFile()) {
IO.writeLine(new BufferedReader(new FileReader(fIn)).readLine());
}
}
public void bad() throws Throwable {
String data;
Logger log_bad = Logger.getLogger("local-logger");
data = ""; /* init data */
Connection conn = null;
PreparedStatement statement = null;
ResultSet rs = null;
BufferedReader buffread = null;
InputStreamReader instrread = null;
try {
/* setup the connection */
conn = IO.getDBConnection();
/* prepare the query */
statement = conn.prepareStatement("select name from users where id=?");
/* get user input for the userid */
IO.writeLine("Enter a userid to login as (number): ");
instrread = new InputStreamReader(System.in);
buffread = new BufferedReader(instrread);
int num = Integer.parseInt(buffread.readLine());
statement.setInt(1, num);
rs = statement.executeQuery();
data = rs.getString(1);
} catch (IOException ioe) {
log_bad.warning("Error with stream reading");
} finally {
/* clean up stream reading objects */
try {
if (buffread != null) {
buffread.close();
}
} catch (IOException ioe) {
log_bad.warning("Error closing buffread");
} finally {
try {
if (instrread != null) {
instrread.close();
}
} catch (IOException ioe) {
log_bad.warning("Error closing instrread");
}
}
/* clean up database objects */
try {
if (rs != null) {
rs.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing rs");
} finally {
try {
if (statement != null) {
statement.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing statement");
} finally {
try {
if (conn != null) {
conn.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing conn");
}
}
}
}
Container data_container = new Container();
data_container.a = data;
(new CWE643_Unsafe_Treatment_of_XPath_Input__fromDB_67b()).bad_sink(data_container);
}
/* goodB2G2() - use badsource and goodsink by reversing statements in second if */
private void goodB2G2() throws Throwable {
String data;
if (IO.static_returns_t()) {
Logger log_bad = Logger.getLogger("local-logger");
data = ""; /* init data */
Connection conn = null;
PreparedStatement statement = null;
ResultSet rs = null;
BufferedReader buffread = null;
InputStreamReader instrread = null;
try {
/* setup the connection */
conn = IO.getDBConnection();
/* prepare the query */
statement = conn.prepareStatement("select name from users where id=?");
/* get user input for the userid */
IO.writeLine("Enter a userid to login as (number): ");
instrread = new InputStreamReader(System.in);
buffread = new BufferedReader(instrread);
int num = Integer.parseInt(buffread.readLine());
statement.setInt(1, num);
rs = statement.executeQuery();
data = rs.getString(1);
} catch (IOException ioe) {
log_bad.warning("Error with stream reading");
} finally {
/* clean up stream reading objects */
try {
if (buffread != null) {
buffread.close();
}
} catch (IOException ioe) {
log_bad.warning("Error closing buffread");
} finally {
try {
if (instrread != null) {
instrread.close();
}
} catch (IOException ioe) {
log_bad.warning("Error closing instrread");
}
}
/* clean up database objects */
try {
if (rs != null) {
rs.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing rs");
} finally {
try {
if (statement != null) {
statement.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing statement");
} finally {
try {
if (conn != null) {
conn.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing conn");
}
}
}
}
} else {
/* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
java.util.logging.Logger log_good = java.util.logging.Logger.getLogger("local-logger");
/* FIX: Use a hardcoded string */
data = "foo";
}
if (IO.static_returns_t()) {
final String xmldoc =
"\\src\\testcases\\CWE643_Unsafe_Treatment_of_XPath_Input\\console_to_evaluate\\CWE643_Unsafe_Treatment_of_XPath_Input__helper.xml";
/* assume username||password as source */
String[] tokens = data.split("||");
if (tokens.length < 2) {
return;
}
/* FIX: validate input using StringEscapeUtils */
String uname = StringEscapeUtils.escapeXml(tokens[0]);
String pword = StringEscapeUtils.escapeXml(tokens[1]);
/* build xpath */
XPath xp = XPathFactory.newInstance().newXPath();
InputSource inxml = new InputSource(xmldoc);
String query =
"//users/user[name/text()='"
+ uname
+ "' and pass/text()='"
+ pword
+ "']"
+ "/secret/text()";
String secret = (String) xp.evaluate(query, inxml, XPathConstants.STRING);
} else {
/* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
final String xmldoc =
"\\src\\testcases\\CWE643_Unsafe_Treatment_of_XPath_Input\\console_to_evaluate\\CWE643_Unsafe_Treatment_of_XPath_Input__helper.xml";
/* assume username||password as source */
String[] tokens = data.split("||");
if (tokens.length < 2) {
return;
}
String uname = tokens[0];
String pword = tokens[1];
/* build xpath */
XPath xp = XPathFactory.newInstance().newXPath();
InputSource inxml = new InputSource(xmldoc);
/* INCIDENTAL: CWE180 Incorrect Behavior Order: Validate Before Canonicalize
* The user input should be canonicalized before validation.
*/
/* FLAW: user input is used without validate */
String query =
"//users/user[name/text()='"
+ uname
+ "' and pass/text()='"
+ pword
+ "']"
+ "/secret/text()";
String secret = (String) xp.evaluate(query, inxml, XPathConstants.STRING);
}
}
public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable {
String data;
/* INCIDENTAL: CWE 571 Statement is Always True */
if (private_final_five == 5) {
Logger log_bad = Logger.getLogger("local-logger");
data = ""; /* init data */
Connection conn = null;
PreparedStatement statement = null;
ResultSet rs = null;
BufferedReader buffread = null;
InputStreamReader instrread = null;
try {
/* setup the connection */
conn = IO.getDBConnection();
/* prepare the query */
statement = conn.prepareStatement("select name from users where id=?");
/* get user input for the userid */
IO.writeLine("Enter a userid to login as (number): ");
instrread = new InputStreamReader(System.in);
buffread = new BufferedReader(instrread);
int num = Integer.parseInt(buffread.readLine());
statement.setInt(1, num);
rs = statement.executeQuery();
data = rs.getString(1);
} catch (IOException ioe) {
log_bad.warning("Error with stream reading");
} finally {
/* clean up stream reading objects */
try {
if (buffread != null) {
buffread.close();
}
} catch (IOException ioe) {
log_bad.warning("Error closing buffread");
} finally {
try {
if (instrread != null) {
instrread.close();
}
} catch (IOException ioe) {
log_bad.warning("Error closing instrread");
}
}
/* clean up database objects */
try {
if (rs != null) {
rs.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing rs");
} finally {
try {
if (statement != null) {
statement.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing statement");
} finally {
try {
if (conn != null) {
conn.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing conn");
}
}
}
}
} else {
/* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
java.util.logging.Logger log_good = java.util.logging.Logger.getLogger("local-logger");
/* FIX: Use a hardcoded string */
data = "foo";
}
/* INCIDENTAL: CWE 571 Statement is Always True */
if (private_final_five == 5) {
/* NOTE: potential incidental issues with not setting secure or HttpOnly flag */
String fp = "../common/config.properties";
/* simple pre-set key makes the stored password recoverable */
String sharedKey = "0000000000000000";
byte[] input = data.getBytes();
SecretKeySpec key = new SecretKeySpec(sharedKey.getBytes(), "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding", "BC");
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] cipherText = cipher.doFinal(input);
/* FLAW: writing a recoverable password to a cookie */
response.addCookie(new Cookie("auth", new String(cipherText)));
} else {
/* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
String prefix = "Tru3ly 0b$scUre";
MessageDigest hash = MessageDigest.getInstance("SHA512");
/* FIX: credentials hashed prior to setting in cookie */
byte[] hashv = hash.digest((prefix + data).getBytes());
response.addCookie(new Cookie("auth", IO.toHex(hashv)));
}
}
