Bugtraq: [SYSS-2017-001] Simplessus Files: SQL Injection

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Advisory ID: SYSS-2017-001

Product: Simplessus Files

Manufacturer: Simplessus

Affected Version(s): 3.7.7

Tested Version(s): 3.7.7

Vulnerability Type: SQL Injection (CWE-89)

Risk Level: High

Solution Status: Open

Manufacturer Notification: January 25, 2017

Solution Date: January 25, 2017

Public Disclosure: February 16, 2017

CVE Reference: Not yet assigned

Author of Advisory: Dr. Adrian Vollmer, SySS GmbH

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Product overview:

Simplessus Files is a file sharing web application.

The manufacturer describes the product as follows (see [1]):

Simplessus Files is a simple software solution to exchange files and

documents over the internet. No more file sharing via e-mail, FTP or

CD-ROM with Simplessus Files replace very large files online easily.

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Vulnerability overview:

Due to insufficient filtering of user controlled input, Simplessus Files is

vulnerable to unauthenticated, time-based blind SQL injection.

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Vulnerability Details:

During the login process, the web application passes the value of the cookie

‘UWA_SID’ to a database without proper filtering or validation. Because SQL

statements are interpreted by the database, information can be extracted bit

by bit by using the SLEEP function.

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Proof of Concept (PoC):

After sending the following request, the web application delays the response

by 40 seconds (probably because the database is queried twice), showcasing

the SQL injection vulnerability.

POST /?lang=de_de HTTP/1.1

Host: <HOSTNAME>

Content-Length: 47

Cookie: UWA_SID=00000000000000000000000000’%2b(select*from(select(sleep(20)))a)%

2b’

core%5Busername%5D=test&core%5Bpassword%5D=test

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Solution:

Update to software version to 3.8.3.

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Disclosure Timeline:

2017-01-13: Vulnerability discovered

2017-01-25: Vulnerability reported

2017-01-25: Vendor confirmation

2017-02-15: Public disclosure

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References:

[1] Product website for Simplessus Files

http://files.simplessus.com

[2] SySS Security Advisory SYSS-2017-001

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-20

17-001.txt

[3] SySS Responsible Disclosure Policy

https://www.syss.de/en/news/responsible-disclosure-policy/

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Credits:

This security vulnerability was found by Dr. Adrian Vollmer of SySS GmbH.

E-Mail: adrian.vollmer (at) syss (dot) de [email concealed]

Public Key: https://www.syss.de/fileadmin/dokumente/PGPKeys/Adrian_Vollmer.asc

Key ID: 0x037C9FE7

Key Fingerprint: 70CF E88C AEE7 DB0F 5DC8 3403 0E02 7C7E 037C 9FE7

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Disclaimer:

The information provided in this security advisory is provided “as is”

and without warranty of any kind. Details of this security advisory may

be updated in order to provide as accurate information as possible. The

latest version of this security advisory is available on the SySS Web

site.

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Copyright:

Creative Commons – Attribution (by) – Version 3.0

URL: http://creativecommons.org/licenses/by/3.0/deed.en

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Source: SecurityFocus Vulnerabilities @ February 16, 2017 at 03:05AM

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