Published:2014/10/28  Last Updated:2014/10/30

QNAP QTS vulnerable to OS command injection


QNAP QTS contains an OS command injection vulnerability.

Products Affected

  • QNAP QTS 4.1.1 Build 0927 and earlier


QNAP QTS is an operating system for Turbo NAS. QNAP QTS contains a flaw in the GNU Bash shell, which may result in an OS command injection vulnerability (CWE-78).


A malicious attacker may be able to execute arbitrary command at the privilege level of the calling application.


Update the Firmware
Update to the latest version of firmware according to the information provided by the developer.


  1. Japan Vulnerability Notes JVNVU#97219505
    GNU Bash vulnerable to OS command injection
  2. CERT/CC Vulnerability Note VU#252743
    GNU Bash shell executes commands in environment variables

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2014.10.28 (CVSS Base Metrics)

What is CVSS?

Measures Severity Description
Access Vector(AV) Local (L) Adjacent Network (A) Network (N) A vulnerability exploitable with network access means the vulnerable software is bound to the network stack and the attacker does not require local network access or local access. Such a vulnerability is often termed "remotely exploitable".
Access Complexity(AC) High (H) Medium (M) Low (L) Specialized access conditions or extenuating circumstances do not exist.
Authentication(Au) Multiple (M) Single (S) None (N) Authentication is not required to exploit the vulnerability.
Confidentiality Impact(C) None (N) Partial (P) Complete (C) There is total information disclosure, resulting in all system files being revealed.
Integrity Impact(I) None (N) Partial (P) Complete (C) There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.
Availability Impact(A) None (N) Partial (P) Complete (C) There is a total shutdown of the affected resource.

Base Score:10.0


Yuuki Wakisaka of University of Electro-Communications reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2014-6271
JVN iPedia JVNDB-2014-000126

Update History

Information under the section "Products Affected" and Vendor Link URL were updated. CVE numbers were added.