[gentoo-announce] [ GLSA 200812-19 ] PowerDNS: Multiple vulnerabilities

[news 28]

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Gentoo Linux Security Advisory GLSA 200812-19

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

http://security.gentoo.org/

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

 

Severity: Normal

Title: PowerDNS: Multiple vulnerabilities

Date: December 19, 2008

Bugs: #234032, #247079

ID: 200812-19

 

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

 

Synopsis

========

 

Two vulnerabilities have been discovered in PowerDNS, possibly leading

to a Denial of Service and easing cache poisoning attacks.

 

Background

==========

 

The PowerDNS Nameserver is an authoritative-only nameserver which uses

a flexible backend architecture.

 

Affected packages

=================

 

-------------------------------------------------------------------

Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 net-dns/pdns < 2.9.21.2 >= 2.9.21.2

 

Description

===========

 

Daniel Drown reported an error when receiving a HINFO CH query

(CVE-2008-5277). Brian J. Dowling of Simplicity Communications

discovered a previously unknown security implication of the PowerDNS

behavior to not respond to certain queries it considers malformed

(CVE-2008-3337).

 

Impact

======

 

A remote attacker could send specially crafted queries to cause a

Denial of Service. The second vulnerability in itself does not pose a

security risk to PowerDNS Nameserver. However, not answering a query

for an invalid DNS record within a valid domain allows for a larger

spoofing window on third-party nameservers for domains being hosted by

PowerDNS Nameserver itself.

 

Workaround

==========

 

There is no known workaround at this time.

 

Resolution

==========

 

All PowerDNS users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=net-dns/pdns-2.9.21.2"

 

References

==========

 

[ 1 ] CVE-2008-3337

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3337

[ 2 ] CVE-2008-5277

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5277

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200812-19.xml

 

Concerns?

=========

 

Security is a primary focus of Gentoo Linux and ensuring the

confidentiality and security of our users machines is of utmost

importance to us. Any security concerns should be addressed to

security ( -at -) gentoo.org or alternatively, you may file a bug at

http://bugs.gentoo.org.

 

License

=======

 

Copyright 2008 Gentoo Foundation, Inc; referenced text

belongs to its owner(s).

 

The contents of this document are licensed under the

Creative Commons - Attribution / Share Alike license.

 

http://creativecommons.org/licenses/by-sa/2.5