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TITLE:
Cisco Products DNS Cache Poisoning Vulnerability

SECUNIA ADVISORY ID:
SA30979

VERIFY ADVISORY:
http://secunia.com/advisories/30979/

CRITICAL:
Moderately critical

IMPACT:
Spoofing

WHERE:
>From remote

OPERATING SYSTEM:
Cisco IOS R12.x
http://secunia.com/product/50/
Cisco IOS 12.x
http://secunia.com/product/182/

SOFTWARE:
Cisco CNS Network Registrar 6.x
http://secunia.com/product/4353/
Cisco Application and Content Networking System (ACNS)
http://secunia.com/product/12537/
Cisco Network Registrar (CNR) 7.x
http://secunia.com/product/19271/

DESCRIPTION:
A vulnerability has been reported in various Cisco products, 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 transaction ID and the source port number, which
can be exploited to poison the DNS cache.

The vulnerability is reported in the following products (please see
the vendor's advisory for details).
* Cisco IOS Software
* Cisco Network Registrar
* Cisco Application and Content Networking System

NOTE: DNS Servers that are only authoritative or do not allow
recursion are not affected.

SOLUTION:
Update to fixed versions (please see vendor advisory for details).

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Dan Kaminsky, IOActive.

ORIGINAL ADVISORY:
http://www.cisco.com/warp/public/707/cisco-sa-20080708-dns.shtml

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

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About:
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Please Note:
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Secunia NEVER sends attached files with advisories.
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use those supplied by the vendor.

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