Boolean-based SQL injection Vulnerability in K2 Platforms

[wissam.bashour () helpag com]

Title: Boolean-based SQL injection Vulnerability in K2 Platforms.
Author: Wissam Bashour - Help AG Middle East
Vendor: K2
Product: SmartForms, BlackPearl, K2 for sharepoint 
Version: 4.6.7
Tested Version: Version 4.6.7
Severity: HIGH
CVE Reference: CVE-2015-7299

# About the Product: K2 smartforms can pull and push information from line-of-business systems — SharePoint, CRM, SAP 
and others — and they can be used in the cloud with applications like Salesforce.com. The built-in K2 SmartObject 
technology allows true reusability of SmartForms components across multiple SmartForms, in multiple applications.


# Description: 
This Boolean-based SQL injection vulnerability enables an anonymous attacker to read sensitive data from the database, 
and recover the content of a given file present on the DBMS file system.
 
# Vulnerability Class: 
SQL injection - https://www.owasp.org/index.php/SQL_Injection)

# How to Reproduce: (POC):
Host the attached code in a webserver. Then go for the xml parameter that calls the AJAXCall.ashx in the smart object 
for the SharePoint.
You can see that the parameter doesn’t sanitize SQL queries. 

# Disclosure: 
Discovered: September 20, 2015
Vendor Notification: September 22, 2015
Advisory Publication: October 13, 2015
Public Disclosure: October 15, 2015

# Solution: 
Upgrade to 4.6.10 or later will fix this issue.
The new version number is 4.6.10 (4.12060.1690.2)
Release date: June, 2015 
 

# credits: 
Wissam Bashour
Associate Security Analyst
Help AG Middle East

# Proof of Concept Code:
https://raw.githubusercontent.com/Siros96/Boolean-SQL-injection/master/PoC

#References:
[1] help AG middle East http://www.helpag.com/.
[2] http://www.k2.com/
[3] https://www.owasp.org/index.php/SQL_Injection
[4] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public 
use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.