Bug 458122 (CVE-2008-3337) - CVE-2008-3337 pdns: not responding invalid queries my simplify spoofing attacks
Summary: CVE-2008-3337 pdns: not responding invalid queries my simplify spoofing attacks
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2008-3337
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-08-06 15:28 UTC by Tomas Hoger
Modified: 2008-08-08 06:51 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-08-08 06:51:35 UTC


Attachments (Terms of Use)

Description Tomas Hoger 2008-08-06 15:28:30 UTC
PowerDNS upstream released new pdns versions - 2.9.21.1 - fixing a security issue reported by Brian Dowling of Simplicity Communications and Florian Weimer of Debian Security Team:

PowerDNS does not respond to certain queries it considers malformed. This in itself is not a problem, and was even thought of as a security measure.

Brian and Florian have discovered that not answering a query for an invalid DNS record within a valid domain allows for a larger spoofing window of the valid domain. Because of the Kaminsky-discovery, this has become bad.

For a sophisticated attacker, this provides no benefit. However, such a long
window allows unsophisticated hackers to achieve better results.

Upstream patch:
http://wiki.powerdns.com/cgi-bin/trac.fcgi/changeset/1239

Comment 1 Tomas Hoger 2008-08-06 15:31:56 UTC
Keeping this private for a little longer, until embargo date/time chosen by upstream, even though it's more or less blown up now.

Comment 2 Ruben Kerkhof 2008-08-06 16:43:10 UTC
I've just build the updates for FC-8, FC-9 and devel.
They've been requested in Bodhi to be pushed to stable.

Comment 3 Fedora Update System 2008-08-07 23:53:02 UTC
pdns-2.9.21.1-1.fc9 has been pushed to the Fedora 9 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 4 Fedora Update System 2008-08-07 23:55:46 UTC
pdns-2.9.21.1-1.fc8 has been pushed to the Fedora 8 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Red Hat Product Security 2008-08-08 06:51:35 UTC
This issue was addressed in:

Fedora:
  https://admin.fedoraproject.org/updates/F8/FEDORA-2008-7083
  https://admin.fedoraproject.org/updates/F9/FEDORA-2008-7048


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