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TITLE:
PowerDNS Two Denial of Service Vulnerabilities

SECUNIA ADVISORY ID:
SA16111

VERIFY ADVISORY:
http://secunia.com/advisories/16111/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

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

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

1) Queries passed to the LDAP backend are not properly sanitised,
which can be exploited to cause the backend to fail and not answer
requests.

Successful exploitation requires LDAP backend support.

2) An error in the handling of requests from clients, which are
denied recursion, can be exploited to temporarily blank out a
domain.

Successful exploitation requires that recursion is provided to a
limited range of IP addresses.

The vulnerabilities have been reported in version 2.9.17. Prior
versions may also be affected.

SOLUTION:
Update to version 2.9.18.
http://www.powerdns.com/downloads/

PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
1) Norbert Sendetzky and Jan de Groot
2) Wilco Baan

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About:
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