SQL Injection in CubeCart PHP Free & Commercial Shopping Cart Application


SQL Injection in CubeCart PHP Free & Commercial Shopping Cart Application

1.
Advisory Information

Title: SQL Injection in CubeCart PHP Free & Commercial Shopping Cart Application
Advisory Id: CORE-2010-0415
Advisory URL: http://www.coresecurity.com/content/cubecart-php-shopping-cart-sql-injection

Date published: 2010-06-08
Date of last update: 2010-01-01
Vendors contacted: CubeCart
Release mode: Coordinated release

2.
Vulnerability Information

Class: SQL injection [CWE-89]

Impact: Code execution
Remotely Exploitable: Yes
Locally Exploitable: No
CVE Name: CVE-2010-1931

Bugtraq ID: N/A

3.
Vulnerability Description

There is an SQL Injection[1] vulnerability in the CubeCart PHP Shopping cart[2], this vulnerability may be exploited by HTTP POSTing mailicious data to the index.php script of CubeCart. As an example, exploitation may result in leak of sensitive information or injection of mailicious code into the shopping cart's web page.

4.
Vulnerable packages

  • CubeCart v.4.3.4
  • CubeCart v.4.3.5
  • CubeCart v.4.3.6
  • CubeCart v.4.3.7
  • CubeCart v.4.3.8
  • CubeCart v.4.3.9
  • Older versions are probably affected too, but they were not checked.

5.
Non-vulnerable packages

  • CubeCart v.4.4.0

6.
Vendor Information, Solutions and Workarounds

Upgrade to the latest version of CubeCart, available at CubeCart's web page[1].

7.
Credits

This vulnerability was discovered and researched by 7Safe. This advisory was coordinated by Pedro Varangot.

8.
Technical Description / Proof of Concept Code

The shipKey parameter of the following POST request (Updating basket) is not adequately sanitized resulting in SQL Injection.

POST /CubeCart/index.php?_g=co&_a=step2 HTTP/1.1
Cookie: [...]
Content-Type: application/x-www-form-urlencoded
[...]

quan%5B3afcdbfeb6ecfbdd0ba628696e3cc163%5D=3&shipKey=1'&coupon=

This happens because the shipKey is assumed to be of the int datatype, and is not cast nor checked before sent to the database, as we can see in the folling code snippet:

if(isset($_POST['shipKey']) && $_POST['shipKey']>0) {
	$cart->setVar($_POST['shipKey'],'shipKey');
	// lose post vars
	$refresh = true;
}

The following snippet correctly patches this bug:

if(isset($_POST['shipKey']) && (int)$_POST['shipKey']>0) {
	$cart->setVar((int)$_POST['shipKey'],'shipKey');
	// lose post vars
	$refresh = true;
}

9.
Report Timeline

  • 2010-06-02: Core Security Technologies contacts the CubeCart team informing an SQL injection vulnerability has been found, and than an advisory draft is ready.
  • 2010-06-02: The CubeCart team asks Core for a technical description of the vulnerability, in the form of an advisory draft, over plaintext e-mail.
  • 2010-06-02: Technical details are sent by Core in the form of a draft of this advisory.
  • 2010-06-03: The CubeCart team replies informing that CubeCart 4.4.0 will be released very soon, and that this vulnerability will be patched in that version.
  • 2010-06-04: CubeCart 4.4.0 is released.
  • 2010-06-08: Advisory CORE-2010-0415 is published.

10.
References

[1] http://www.owasp.org/index.php/SQL_Injection
[2] http://www.cubecart.com/

11.
About CoreLabs

CoreLabs, the research center of Core Security Technologies, is charged with anticipating the future needs and requirements for information security technologies. We conduct our research in several important areas of computer security including system vulnerabilities, cyber attack planning and simulation, source code auditing, and cryptography. Our results include problem formalization, identification of vulnerabilities, novel solutions and prototypes for new technologies. CoreLabs regularly publishes security advisories, technical papers, project information and shared software tools for public use at: http://corelabs.coresecurity.com/.

12.
About Core Security Technologies

Core Security Technologies develops strategic solutions that help security-conscious organizations worldwide develop and maintain a proactive process for securing their networks. The company's flagship product, CORE IMPACT, is the most comprehensive product for performing enterprise security assurance testing. CORE IMPACT evaluates network, endpoint and end-user vulnerabilities and identifies what resources are exposed. It enables organizations to determine if current security investments are detecting and preventing attacks. Core Security Technologies augments its leading technology solution with world-class security consulting services, including penetration testing and software security auditing. Based in Boston, MA and Buenos Aires, Argentina, Core Security Technologies can be reached at 617-399-6980 or on the Web at http://www.coresecurity.com.

13.
Disclaimer

The contents of this advisory are copyright (c) 2010 Core Security Technologies and (c) 2010 CoreLabs, and may be distributed freely provided that no fee is charged for this distribution and proper credit is given.

14.
PGP/GPG Keys

This advisory has been signed with the GPG key of Core Security Technologies advisories team, which is available for download at /legacy/files/attachments/core_security_advisories.asc.

Locally Exploitable: 
no
Remotely Exploitable: 
no
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