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TITLE:
Nominum CNS and Vantio DNS Cache Poisoning Vulnerability

SECUNIA ADVISORY ID:
SA31011

VERIFY ADVISORY:
http://secunia.com/advisories/31011/

CRITICAL:
Moderately critical

IMPACT:
Spoofing

WHERE:
>From remote

SOFTWARE:
Nominum Caching Name Server (CNS) 3.x
http://secunia.com/product/19280/
Nominum Vantio (CNS) 3.x
http://secunia.com/product/19281/

DESCRIPTION:
Nominum has acknowledged a vulnerability in Nominum CNS and Vantio,
which can be exploited by malicious people to poison the DNS cache.

The vulnerability is caused due to the DNS servers not sufficiently
randomising the DNS query port number, which can be exploited to
poison the DNS cache.

SOLUTION:
Update to CNS version 3.0.4.0 and Vantio version 3.3.1.0 or later.

PROVIDED AND/OR DISCOVERED BY:
Dan Kaminsky, IOActive

ORIGINAL ADVISORY:
Nominum:
http://www.nominum.com/asset_upload_file741_2661.pdf

OTHER REFERENCES:
US-CERT VU#800113:
http://www.kb.cert.org/vuls/id/800113

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About:
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