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PowerDNS 2.9.18 fixes two security issues affecting users of LDAP backend or limited recursion
From: bert.hubert () netherlabs nl
Date: 16 Jul 2005 11:54:37 -0000
PowerDNS 2.9.18 fixes two bugs with security implications, which only apply to installations running on the LDAP
backend, or installations providing recursion to a limited range of IP addresses. If any of these apply to you, an
upgrade is highly advised.
Version 2.9.18 release notes are on: http://doc.powerdns.com/changelog.html#CHANGELOG-2-9-18
Version 2.9.18 is available on:
Wiki, source, bugtracker: http://wiki.powerdns.com/
Security page: http://doc.powerdns.com/security-policy.html
* The LDAP backend did not properly escape all queries, allowing it to fail and not answer questions. We have not
investigated further risks involved, but we advise LDAP users to update as quickly as possible (Norbert Sendetzky, Jan
* Questions from clients denied recursion could blank out answers to clients who are allowed recursion services,
temporarily. Reported by Wilco Baan. This would've made it possible for outsiders to blank out a domain temporarily to
your users. Luckily PowerDNS would send out SERVFAIL or Refused, and not a denial of a domain's existence.
Thanks for your attention.
- PowerDNS 2.9.18 fixes two security issues affecting users of LDAP backend or limited recursion bert . hubert (Jul 17)