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[ GLSA 201202-04 ] PowerDNS: Denial of Service
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GLSA
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PostPosted: Wed Feb 22, 2012 9:26 pm    Post subject: [ GLSA 201202-04 ] PowerDNS: Denial of Service Reply with quote

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
   
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"
   


References

CVE-2012-0206
PowerDNS
Security Advisory 2012-01
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