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TITLE:
djbdns SOA Requests DNS Cache Poisoning Security Issue

SECUNIA ADVISORY ID:
SA33855

VERIFY ADVISORY:
http://secunia.com/advisories/33855/

DESCRIPTION:
Kevin Day has reported a security issue in djbdns, which potentially
can be exploited by malicious people to conduct spoofing attacks.

The security issue is caused due to the dnscache server component
improperly handling SOA (Start of Authority) records. This can be
exploited to increase the chances for a successful DNS poisoning
attack by continuously sending a large number of SOA requests and
spoofed replies.

The security issue is reported in version 1.05. Other versions may
also be affected.

SOLUTION:
Although no effective workaround exists, attempted blocking of SOA
requests from untrusted sources may mitigate exploitation.

PROVIDED AND/OR DISCOVERED BY:
Kevin Day

ORIGINAL ADVISORY:
http://www.your.org/dnscache/

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