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Last updated: 5/27/2016 5:36:08 AM

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National Cyber Awareness System

Vulnerability Summary for CVE-2009-3200

Original release date: 09/21/2009
Last revised: 03/06/2010


The QNAP TS-239 Pro and TS-639 Pro with firmware 2.1.7 0613, 3.1.0 0627, and 3.1.1 0815 create an undocumented recovery key and store it in the ENCK variable in flash memory, which allows local users to bypass the passphrase requirement and decrypt the hard drive by reading this variable, deobfuscating the key, and running a cryptsetup luksOpen command.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.9 MEDIUM
Impact Subscore: 8.5
Exploitability Subscore: 3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

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External Source: MISC
Name: http://www.baseline-security.de/downloads/BSC-Qnap_Crypto_Backdoor-CVE-2009-3200.txt
External Source: BUGTRAQ
Name: 20090918 Advisory: Crypto backdoor in Qnap storage devices (CVE-2009-3200)
External Source: SECTRACK
Name: 1022916
External Source: BID
Name: 36467
External Source: MISC
Name: http://forum.qnap.com/viewtopic.php?f=12&t=12104&start=10#p63341
External Source: MISC
Name: http://forum.qnap.com/viewtopic.php?f=11&t=11214&start=20#p63346
External Source: XF
Name: qnap-backupkey-weak-security(53391)

Technical Details

Vulnerability Type (View All)