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TITLE:
Avocent CCM Port Access Control Bypass Vulnerability

SECUNIA ADVISORY ID:
SA16836

VERIFY ADVISORY:
http://secunia.com/advisories/16836/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
>From remote

OPERATING SYSTEM:
Avocent CCM XX50
http://secunia.com/product/5714/

DESCRIPTION:
Dirk Wetter has reported a vulnerability in Avocent CCM, which can be
exploited by malicious users to bypass certain security restrictions.

The vulnerability is caused due to an error in the "connect" command
in restricting access to certain serial ports. This can be exploited
by malicious users to bypass port-based access control by directly
connecting to the console server via SSH, and then using the
"connect" command to access the port.

The vulnerability has been reported in CCM4850 with firmware 2.1.

SOLUTION:
Update to firmware version 2.3.
ftp://ftp.avocent.com/public/product-upgrades/$ds1800/CCMx50%20Series/CCMx50%27s_AV_2.3/

PROVIDED AND/OR DISCOVERED BY:
Dirk Wetter

ORIGINAL ADVISORY:
http://drwetter.org/cs-probs/avocent-sshbug.txt

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About:
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