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QNAP Turbo NAS Multiple Vulnerabilities - Security Advisory
Sense of Security - Security Advisory - SOS-12-006
Release Date. 13-Jun-2012
Last Update. -
Vendor Notification Date. 12-Mar-2012
Platform. Turbo NAS (verified) and possibly others
Affected versions. Firmware Version: 3.6.1 Build 0302T and prior
Severity Rating. High
Impact. Exposure of sensitive information
Exposure of system information
Attack Vector. Remote with authentication
Solution Status. Currently no software update;
vendor has elected not to fix at this time
CVE reference. CVE - not yet assigned
QNAP provide NAS technology solutions to consumers and enterprises.
Multiple vulnerabilities have been identified in the web management
1. Command Injection:
The QNAP Download Station (QDownload) is vulnerable to command injection
as the application executes user-controllable data that is processed by
a shell command interpreter.
The following resources, accessible post authentication are affected:
/cgi-bin/Qdownload/DS_RSS_Option.cgi [keyword parameter]
/cgi-bin/Qdownload/DS_RSS_Option.cgi [title parameter]
Commands are executed with the context of the admin user [uid=0(admin)
gid=0(administrators] on the QNAP device.
Proof of Concept.
The QNAP login page stores persistent cookies (including the administrator
username and password) as base64 encoded strings inside the cookie
parameter nas_p. These cookies are not protected with either the HTTPOnly
or Secure flags allowing theft via one of the many cross-site scripting
vulnerabilities which exist within the application (disclosed previously
by another researcher, but never fixed).
Proof of Concept.
Cookie: qnap_admin_style=default; nas_save_u=1; nas_u=bGFicw==;
nas_address=10.1.1.2; nas_save_p=1; nas_p= YWRtaW5UMG1iJTI0dDBuMw==;
YWRtaW5UMG1iJTI0dDBuMw== decodes to admin123qweasd
No vendor solution.
Nadeem Salim and Phil Taylor from Sense of Security Labs.
Sense of Security is a leading provider of information security and
risk management solutions. Our team has expert skills in assessment
and assurance, strategy and architecture, and deployment through to
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testing firm and trusted IT security advisor to many of the country's
Sense of Security Pty Ltd
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Sydney NSW 2000
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