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TITLE:
ISC BIND Query Port DNS Cache Poisoning

SECUNIA ADVISORY ID:
SA30973

VERIFY ADVISORY:
http://secunia.com/advisories/30973/

CRITICAL:
Moderately critical

IMPACT:
Spoofing

WHERE:
>From remote

SOFTWARE:
ISC BIND 9.4.x
http://secunia.com/product/14101/
ISC BIND 9.3.x
http://secunia.com/product/4298/
ISC BIND 9.2.x
http://secunia.com/product/75/
ISC BIND 8.x.x
http://secunia.com/product/76/
ISC BIND 9.5.x
http://secunia.com/product/19274/

DESCRIPTION:
A vulnerability has been reported in ISC BIND, 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.

The vulnerability is reported in all BIND 8 and 9 versions when
running as caching resolver.

SOLUTION:
Update to version 9.5.0-P1, 9.4.2-P1, or 9.3.5-P1 to expand the query
port range to mitigate attacks.

Use DNSSEC.

PROVIDED AND/OR DISCOVERED BY:
Dan Kaminsky, IOActive

ORIGINAL ADVISORY:
http://www.isc.org/index.pl?/sw/bind/bind-security.php

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

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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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http://secunia.com/about_secunia_advisories/


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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