ISC (Internet Systems Consortiuim) BIND generates cryptographically weak DNS query IDs which could allow a remote attacker to poison DNS caches.
From the ISC Bind security page:
The DNS query id generation is vulnerable to cryptographic analysis which provides a 1 in 8 chance of guessing the next query id for 50% of the query ids. This can be used to perform cache poisoning by an attacker.
A remote attacker could predict DNS query IDs and respond with arbitrary answers, thus poisoning DNS caches.
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This vulnerability was reported by ISC who credit Amit Klein from Trusteer
|Date First Published:||2007-07-27|
|Date Last Updated:||2008-08-06 13:02 UTC|