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TITLE:
Siemens Santis 50 Authentication Bypass Vulnerability

SECUNIA ADVISORY ID:
SA16215

VERIFY ADVISORY:
http://secunia.com/advisories/16215/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass

WHERE:
>From local network

OPERATING SYSTEM:
Siemens Santis 50
http://secunia.com/product/5440/

DESCRIPTION:
Luca Carettoni has reported a vulnerability in Siemens Santis 50,
which can be exploited by malicious people to bypass certain security
restrictions.

The vulnerability is cause due to the device allowing unauthenticated
access to its telnet management interface after some packets have been
sent to port 280 of the device. This can reportedly be exploited to
view configuration information and potentially erase the device's
flash memory.

The vulnerability has been reported in firmware version 4.2.8.0.
Other versions may also be affected.

SOLUTION:
Restrict access to the device.

PROVIDED AND/OR DISCOVERED BY:
Luca Carettoni, Secure Network.

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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