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TITLE:
Nortel VPN Router Default User Accounts and Missing Authentication
Checks

SECUNIA ADVISORY ID:
SA24962

VERIFY ADVISORY:
http://secunia.com/advisories/24962/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass, Manipulation of data

WHERE:
>From remote

OPERATING SYSTEM:
Nortel Contivity VPN Switches
http://secunia.com/product/2425/
Nortel VPN Routers
http://secunia.com/product/2426/

DESCRIPTION:
A vulnerability and a security issue have been reported in Nortel VPN
Routers, which can be exploited by malicious people to bypass certain
security restrictions or manipulate certain data.

1) Two default user accounts ("FIPSecryptedtest1219" and
"FIPSunecryptedtest1219") are configured on the VPN Router, which are
not readily visible to the system manager. These can be exploited to
gain unauthorized access to the private network.

2) Missing authentication checks within two template files of the web
management tool can be exploited to e.g. modify certain router
configurations.

An issue regarding same DES keys used to encrypt user's passwords has
also been reported, which can facilitate brute-force attacks on user's
passwords if the attacker were to gain access to the LDAP store.

The vulnerability and security issue reportedly affect the following
products:
* Contivity 1000 VPN Switch
* Contivity 2000 VPN Switch
* Contivity 4000 VPN Switch
* VPN Router 5000
*VPN Router Portfolio

SOLUTION:
Update to versions 6_05.140, 5_05.304, or 5_05.149.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Detack GmbH.

ORIGINAL ADVISORY:
Nortel:
http://www130.nortelnetworks.com/go/main.jsp?cscat=BLTNDETAIL&DocumentOID=567877&RenditionID=&poid=null

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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.

Subscribe:
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http://secunia.com/about_secunia_advisories/


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