GLSA
Advocate
Joined: 12 May 2004
Posts: 2663
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 Posted: Wed Feb 22, 2012 9:26 pm Post subject: [ GLSA 201202-04 ] PowerDNS: Denial of Service |
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Gentoo Linux Security Advisory
Title: PowerDNS: Denial of Service (GLSA 201202-04)
Severity: normal
Exploitable: remote
Date: February 22, 2012
Bug(s): #398403
ID: 201202-04
Synopsis
A vulnerability in PowerDNS could allow a remote attacker to create
a Denial of Service condition.
Background
The PowerDNS nameserver is an authoritative-only nameserver which uses a
flexible backend architecture.
Affected Packages
Package: net-dns/pdns
Vulnerable: < 3.0.1
Unaffected: >= 3.0.1
Architectures: All supported architectures
Description
A vulnerability has been found in PowerDNS which could cause a packet
loop of DNS responses.
Impact
A remote attacker could send specially crafted DNS response packets,
possibly resulting in a Denial of Service condition.
Workaround
PowerDNS users can set "cache-ttl=0" in /etc/powerdns/pdns.conf and then
restart the PowerDNS daemon:
| Code: | # /etc/init.d/pdns restart
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Please review the PowerDNS Security Advisory below for more workaround
details.
Resolution
All PowerDNS users should upgrade to the latest version: | Code: | # emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/pdns-3.0.1"
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References
CVE-2012-0206
PowerDNS
Security Advisory 2012-01
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