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

[OpenPKG GmbH]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

__________________________________________________ __________________________

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/
for more details on how to verify the integrity of this document.
__________________________________________________ __________________________

-----BEGIN PGP SIGNATURE-----
Comment: OpenPKG GmbH <http://openpkg.com/>

iD8DBQFGpyOXZwQuyWG3rjQRAkOlAKDZBMOEXpV5uq4cuPJHtU 27MiK0YACeJojc
DmLNgVHAAWQ9UtDuELHxFq8=
=wNTs
-----END PGP SIGNATURE-----