Vulnerability Note VU#444472
QNAP Signage Station and iArtist Lite contain multiple vulnerabilities
Original Release date: 25 Feb 2016 | Last revised: 25 Feb 2016

Overview
The QNAP Signage Station prior to version 2.0.1 and the accompanying iArtist Lite application contain multiple vulnerabilities.

Description
CWE-434: Unrestricted Upload of File with Dangerous Type – CVE-2015-6022
An authenticated attacker without administrative permissions may upload a malicious file, such as a PHP script, to the QNAP Signage Station server.

The attacker is then able to access the uploaded file via a predictable URL and execute the script.

The script is executed on the server with administrator permissions.

CWE-290: Authentication Bypass by Spoofing – CVE-2015-6036

An unauthenticated attacker may spoof an HTTP request to the QNAP Signage Station in such a manner as to bypass authentication, allowing the attacker to perform actions such as upload files.

CWE-798: Use of Hard-coded Credentials – CVE-2015-7261
CWE-523: Unprotected Transport of Credentials

QNAP iArtist Lite contains a hard-coded FTP account and password, and uses these credentials to communicate with Signage Station.

FTP transmits all data in plain text and is not secure from attackers eavesdropping on the network.

CWE-427: Uncontrolled Search Path Element – CVE-2015-7262

QNAP iArtist Lite allows a user to register a binary with the iArtist service, which will be executed with SYSTEM privileges upon next system restart.

Impact
An unauthenticated user may be able to execute commands on the server with system privileges.

Solution
Apply an update

QNAP has released Signage Station 2.0.1 and iArtist Lite 1.4.54 to address this issue.

Affected users are encouraged to update as soon as possible.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate UpdatedQNAPAffected23 Sep 201516 Oct 2015If you are a vendor and your product is affected, let
us know.

CVSS Metrics (Learn More)

Group
Score
Vector

Base
9.0
AV:N/AC:L/Au:S/C:C/I:C/A:C

Temporal
7.4
E:F/RL:OF/RC:C

Environmental
5.6
CDP:ND/TD:M/CR:ND/IR:ND/AR:ND

References

http://cwe.mitre.org/data/definitions/290.html
http://cwe.mitre.org/data/definitions/434.html
http://cwe.mitre.org/data/definitions/798.html
http://cwe.mitre.org/data/definitions/427.html

Credit

Thanks to Mark Woods for reporting these vulnerabilities.
This document was written by Garret Wassermann.

Other Information

CVE IDs:
CVE-2015-6022
CVE-2015-6036
CVE-2015-7261
CVE-2015-7262

Date Public:
25 Feb 2016

Date First Published:
25 Feb 2016

Date Last Updated:
25 Feb 2016

Document Revision:
60

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