TITLE:
PowerDNS Recursor Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA19831

VERIFY ADVISORY:
http://secunia.com/advisories/19831/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
PowerDNS 3.x
http://secunia.com/product/9556/
PowerDNS 2.x
http://secunia.com/product/929/

DESCRIPTION:
A vulnerability has been reported in PowerDNS, which can be exploited
by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error in the recursor when
parsing certain DNS packets. This can be exploited to crash the
recursor via a malformed EDNS0 packet.

The vulnerability has been reported in versions prior to 3.0.1.

SOLUTION:
Update to version 3.0.1.
http://www.powerdns.com/en/downloads.aspx

PROVIDED AND/OR DISCOVERED BY:
The vendor credits David Gavarret.

ORIGINAL ADVISORY:
http://doc.powerdns.com/changelog.html#CHANGELOG-RECURSOR-3-0-1
http://wiki.powerdns.com/projects/trac/changeset/760
http://wiki.powerdns.com/projects/trac/changeset/761

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