full-disclosure - [OpenPKG-SA-2007.022] OpenPKG Security Advisory (bind)

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Date: Wed, 25 Jul 2007 12:19:09 +0200
From: OpenPKG GmbH <openpkg-noreply@...npkg.com>
To: full-disclosure@...ts.grok.org.uk
Subject: [OpenPKG-SA-2007.022] OpenPKG Security Advisory
	(bind)

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____________________________________________________________________________

Publisher Name:          OpenPKG GmbH
Publisher Home:          http://openpkg.com/

Advisory Id (public):    OpenPKG-SA-2007.022
Advisory Type:           OpenPKG Security Advisory (SA)
Advisory Directory:      http://openpkg.com/go/OpenPKG-SA
Advisory Document:       http://openpkg.com/go/OpenPKG-SA-2007.022
Advisory Published:      2007-07-25 12:18 UTC

Issue Id (internal):     OpenPKG-SI-20070725.01
Issue First Created:     2007-07-25
Issue Last Modified:     2007-07-25
Issue Revision:          04
____________________________________________________________________________

Subject Name:            bind
Subject Summary:         DNS Server
Subject Home:            http://www.isc.org/sw/bind/
Subject Versions:        9.* <= 9.4.1-P1

Vulnerability Id:        CVE-2007-2925, CVE-2007-2926
Vulnerability Scope:     global (not OpenPKG specific)

Attack Feasibility:      run-time
Attack Vector:           remote network
Attack Impact:           privilege escalation

Description:
    As confirmed [0] by the vendor, two vulnerabilities exist in the DNS
    server BIND [1]:
    
    1. The default access control lists (acls) are not being correctly
    set. If not set anyone can make recursive queries and/or query the
    cache contents.
    
    2. The DNS query id generation is vulnerable to cryptographic
    analysis which provides a 1 in 8 chance of guessing the next query
    id for 50% of the query ids. This can be used to perform cache
    poisoning by an attacker. This bug only affects outgoing queries,
    generated by BIND 9 to answer questions as a resolver, or when it is
    looking up data for internal uses, such as when sending NOTIFYs to
    slave name servers.

References:
    [0] http://www.isc.org/sw/bind/bind-security.php
    [1] http://www.isc.org/sw/bind/
____________________________________________________________________________

Primary Package Name:    bind
Primary Package Home:    http://openpkg.org/go/package/bind

Corrected Distribution:  Corrected Branch: Corrected Package:
OpenPKG Community        CURRENT           bind-9.4.1p1-20070725
____________________________________________________________________________

For security reasons, this document was digitally signed with the
OpenPGP public key of the OpenPKG GmbH (public key id 61B7AE34)
which you can download from http://openpkg.com/openpkg.com.pgp
or retrieve from the OpenPGP keyserver at hkp://pgp.openpkg.org/.
Follow the instructions at http://openpkg.com/security/signatures/
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____________________________________________________________________________

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