Trustwave SpiderLabs Security Advisory TWSL2013-031: 
Information Disclosure Vulnerability in RiskNet Acquirer

Published: 11/07/13
Version: 1.0

Vendor: aiCorporation (http://aicorporation.net/)
Product: RiskNet Acquirer
Version affected: Potentially all versions (tested on 6.0) prior to the
"6.0 b7+ADHOC-443" hotfix

Product description:
RiskNet Acquirer is a fraud management solution developed to protect major
financial institutions including banks and payment processors.

Finding 1: Information Disclosure Leading to Privilege Escalation (Full
Database Access)
Credit: Tom Neaves of Trustwave SpiderLabs
CVE: CVE-2013-5687
CWE: CWE-200

RiskNet Acquirer consists of a thick client, a web service, and a database.
During the authentication process as a normal user, a HTTP POST SOAP
request is sent to the "ApplicationServiceBean" web service over HTTPS.
This request contains user credentials, the workstation IP address and
hostname.

Example:
POST /ApplicationServiceBean HTTP/1.1
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0)
Content-Type: text/xml; charset=utf-8
SOAPAction: ""
Host: WEBSERVER
Content-Length: 625
Expect: 100-continue
Connection: Keep-Alive

HTTP/1.1 100 Continue

<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><authenticateExecutionAndGetOperationalData xmlns="http://REMOVED/wsdl"><arg0 xmlns="">HASH</arg0><arg1 xmlns="">USERNAME</arg1><arg2 xmlns="">PASSWORD</arg2><arg3 xmlns="">IP</arg3><arg4 xmlns="">HOSTNAME</arg4><arg5 xmlns="">2820</arg5></authenticateExecutionAndGetOperationalData></soap:Body></soap:Envelope>

The response from the server reveals the database hostname, username and
password, as shown below. The assumption is that this message is to tell
the thick client how to connect to the database.


HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/xml;charset=utf-8
Transfer-Encoding: chunked
Date: Fri, 00 Jan 2132 01:23:45 GMT

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><ns1:authenticateExecutionAndGetOperationalDataResponse xmlns:ns1="http://REMOVED/wsdl"><return>GUID_VALUE;InactivePeriod=15;DBUser=DB_USER;DBPassword=DB_PASSWORD;UserID=USERNAME;Password_Expired=false;UserFlags=0;DATABASE=DATABASE_NAME;PORT=1433;SERVER=DATABASE_SERVER;INSTANCENAME=;SSL=false</return></ns1:authenticateExecutionAndGetOperationalDataResponse></soap:Body></soap:Envelope>

It is then possible to utilise the privileged database credentials returned
directly and connect to the database server resulting in unauthorised
access and potential modification of data belonging to any RiskNet Acquirer
table. A previously normal user now has the ability to access all data,
including audit logs.


Remediation Steps:
According to aiCorporation, the "6.0 b7+ADHOC-443" hotfix mitigates this
vulnerability. However, Trustwave SpiderLabs have not verified this fix.


Revision History:
08/22/13 - Vulnerability disclosed to vendor
11/05/13 - Vendor confirms availability of hotfix
11/07/13 - Advisory published

References
1. http://aicorporation.net/risknetacquirer/

About Trustwave:
Trustwave is the leading provider of on-demand and subscription-based
information security and payment card industry compliance management
solutions to businesses and government entities throughout the world. For
organizations faced with today's challenging data security and compliance
environment, Trustwave provides a unique approach with comprehensive
solutions that include its flagship TrustKeeper compliance management
software and other proprietary security solutions. Trustwave has helped
thousands of organizations--ranging from Fortune 500 businesses and large
financial institutions to small and medium-sized retailers--manage
compliance and secure their network infrastructure, data communications and
critical information assets. Trustwave is headquartered in Chicago with
offices throughout North America, South America, Europe, Africa, China and
Australia. For more information, visit https://www.trustwave.com

About Trustwave SpiderLabs:
SpiderLabs(R) is the advanced security team at Trustwave focused on
application security, incident response, penetration testing, physical
security and security research. The team has performed over a thousand
incident investigations, thousands of penetration tests and hundreds of
application security tests globally. In addition, the SpiderLabs Research
team provides intelligence through bleeding-edge research and proof of
concept tool development to enhance Trustwave's products and services.
https://www.trustwave.com/spiderlabs

Disclaimer:
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