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TITLE:
RaidSonic ICY BOX NAS-4220-B Insecure Storage of Encryption Key

SECUNIA ADVISORY ID:
SA29401

VERIFY ADVISORY:
http://secunia.com/advisories/29401/

CRITICAL:
Not critical

IMPACT:
Exposure of sensitive information

WHERE:
Local system

OPERATING SYSTEM:
RaidSonic ICY BOX NAS-4220-B
http://secunia.com/product/17944/

DESCRIPTION:
Collin Mulliner has reported a security issue in RaidSonic
NAS-4220-B, which can be exploited by malicious people with physical
access to the device to disclose potentially sensitive information.

The security issue is caused due to the device storing the
base64-encoded encryption key of an encrypted partition in the file
".crypt" on the unencrypted "system" partition on the same disk.

The security issue is reported in NAS-4220-B with firmware 2.6.0-n
(2007-10-11). Other versions may also be affected.

SOLUTION:
Do not rely on the disk encryption feature.

PROVIDED AND/OR DISCOVERED BY:
Collin Mulliner

ORIGINAL ADVISORY:
http://www.mulliner.org/security/advisories/raidsonic_nas4220_crypt_disk_key_leak_09Mar2008.txt

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