Bug 440247 (CVE-2008-1637) - CVE-2008-1637 pdns-recursor: perdictable query ids
Summary: CVE-2008-1637 pdns-recursor: perdictable query ids
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2008-1637
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: 440248 440249 440250
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-04-02 14:27 UTC by Tomas Hoger
Modified: 2019-09-29 12:24 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-04-24 11:21:20 UTC


Attachments (Terms of Use)

Description Tomas Hoger 2008-04-02 14:27:05 UTC
Amit Klein of Trusteer discovered and documented weakness in a way PowerDNS
Recursor generates DNS queries and transaction IDs used in DNS queries.  This
weakness can be used to predict transaction IDs used in a subsequent queries
after observing certain amount of consequent previous queries, leading to a high
possibility of performing a successful cache poisoning attack.

PowerDNS Recursor 3.1.5 was released to address this issue.

References:
http://www.trusteer.com/docs/powerdnsrecursor.html
http://doc.powerdns.com/powerdns-advisory-2008-01.html
http://mailman.powerdns.com/pipermail/pdns-users/2008-March/005279.html
http://www.securityfocus.com/archive/1/490330/30/

Comment 2 Tomas Hoger 2008-04-02 17:09:21 UTC
CVE-2008-1637 was assigned to this issue:

PowerDNS Recursor before 3.1.5 uses insufficient randomness to
calculate (1) TRXID values and (2) UDP source port numbers, which
makes it easier for remote attackers to poison a DNS cache, related to
(a) algorithmic deficiencies in rand and random functions in external
libraries, (b) use of a 32-bit seed value, and (c) choice of the time
of day as the sole seeding information.


Comment 3 Fedora Update System 2008-04-05 12:41:12 UTC
pdns-recursor-3.1.5-1.fc8 has been submitted as an update for Fedora 8

Comment 4 Fedora Update System 2008-04-05 12:42:52 UTC
pdns-recursor-3.1.5-1.fc7 has been submitted as an update for Fedora 7

Comment 5 Fedora Update System 2008-04-09 05:20:41 UTC
pdns-recursor-3.1.5-1.fc7 has been pushed to the Fedora 7 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2008-04-09 05:22:15 UTC
pdns-recursor-3.1.5-1.fc8 has been pushed to the Fedora 8 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Red Hat Product Security 2008-04-24 11:21:20 UTC
This issue was addressed in:

Fedora:
  https://admin.fedoraproject.org/updates/F7/FEDORA-2008-3010
  https://admin.fedoraproject.org/updates/F8/FEDORA-2008-3036




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