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Category:   Application (Generic)  >   Net DNS Vendors:   net-dns.org
(Red Hat Issues Fix) Perl Net::DNS Perdicatable Sequence IDs Let Remote Users Spoof DNS Responses
SecurityTracker Alert ID:  1018381
SecurityTracker URL:  http://securitytracker.com/id/1018381
CVE Reference:   CVE-2007-3377   (Links to External Site)
Date:  Jul 12 2007
Impact:   Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 0.60
Description:   A vulnerability was reported in Perl Net::DNS. A remote user can spoof DNS responses.

The 'Header.pm' component generates predictable sequence IDs and uses the same starting ID for all child processes of a forking server. A remote user can spoof DNS responses.

Impact:   A remote user can spoof DNS responses.
Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2007-0675.html

Vendor URL:  www.net-dns.org/ (Links to External Site)
Cause:   Randomization error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  4

Message History:   This archive entry is a follow-up to the message listed below.
Jul 12 2007 Perl Net::DNS Perdicatable Sequence IDs Let Remote Users Spoof DNS Responses



 Source Message Contents

Subject:  [RHSA-2007:0675-01] Moderate: perl-Net-DNS security update


-----BEGIN PGP SIGNED MESSAGE-----
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- ---------------------------------------------------------------------
                   Red Hat Security Advisory

Synopsis:          Moderate: perl-Net-DNS security update
Advisory ID:       RHSA-2007:0675-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2007-0675.html
Issue date:        2007-07-12
Updated on:        2007-07-12
Product:           Red Hat Enterprise Linux
CVE Names:         CVE-2007-3377 
- ---------------------------------------------------------------------

1. Summary:

An updated perl-Net-DNS package that corrects a security issue is now
available for Red Hat Enterprise Linux 4.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Problem description:

Net::DNS is a collection of Perl modules that act as a Domain Name System
(DNS) resolver.

A flaw was found in the way Net::DNS generated the ID field in a DNS query.
This predictable ID field could be used by a remote attacker to return
invalid DNS data. (CVE-2007-3377)

Users of Net::DNS should upgrade to this updated package, which contains
backported patches to correct this issue.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.  

This update is available via Red Hat Network.  Details on how to use 
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

5. Bug IDs fixed (http://bugzilla.redhat.com/):

245466 - CVE-2007-3377 perl-net-DNS security issue

6. RPMs required:

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/perl-Net-DNS-0.48-2.el4.src.rpm
1434303a9458e1f4461e50d8c3b3dbc4  perl-Net-DNS-0.48-2.el4.src.rpm

i386:
28476d3ac5f2deb04d5ac740dbd287f4  perl-Net-DNS-0.48-2.el4.i386.rpm
96274498293760852c9d65f71b50767b  perl-Net-DNS-debuginfo-0.48-2.el4.i386.rpm

ia64:
275e5bd9423c994ba3fa42beeec5d1cd  perl-Net-DNS-0.48-2.el4.ia64.rpm
817c91e7b08262bee73052a047214e6d  perl-Net-DNS-debuginfo-0.48-2.el4.ia64.rpm

ppc:
3efd00fc8e673cf8b5d65890e8346eed  perl-Net-DNS-0.48-2.el4.ppc.rpm
fc57794d5784e5def0d19675f388717b  perl-Net-DNS-debuginfo-0.48-2.el4.ppc.rpm

s390:
b1a1ae4d7f112ef94654369ac44d45ec  perl-Net-DNS-0.48-2.el4.s390.rpm
a954b8ad460167ffb7c4f98bb78266b5  perl-Net-DNS-debuginfo-0.48-2.el4.s390.rpm

s390x:
9adcb38363dd990bcc67cce9a8be25a7  perl-Net-DNS-0.48-2.el4.s390x.rpm
294c04447658014f6e62a98df4ca4b94  perl-Net-DNS-debuginfo-0.48-2.el4.s390x.rpm

x86_64:
3e8637d884a3b84ea38e697a9ec915c2  perl-Net-DNS-0.48-2.el4.x86_64.rpm
851d0fe7b04b9155384557f57f9245ba  perl-Net-DNS-debuginfo-0.48-2.el4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/perl-Net-DNS-0.48-2.el4.src.rpm
1434303a9458e1f4461e50d8c3b3dbc4  perl-Net-DNS-0.48-2.el4.src.rpm

i386:
28476d3ac5f2deb04d5ac740dbd287f4  perl-Net-DNS-0.48-2.el4.i386.rpm
96274498293760852c9d65f71b50767b  perl-Net-DNS-debuginfo-0.48-2.el4.i386.rpm

x86_64:
3e8637d884a3b84ea38e697a9ec915c2  perl-Net-DNS-0.48-2.el4.x86_64.rpm
851d0fe7b04b9155384557f57f9245ba  perl-Net-DNS-debuginfo-0.48-2.el4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/perl-Net-DNS-0.48-2.el4.src.rpm
1434303a9458e1f4461e50d8c3b3dbc4  perl-Net-DNS-0.48-2.el4.src.rpm

i386:
28476d3ac5f2deb04d5ac740dbd287f4  perl-Net-DNS-0.48-2.el4.i386.rpm
96274498293760852c9d65f71b50767b  perl-Net-DNS-debuginfo-0.48-2.el4.i386.rpm

ia64:
275e5bd9423c994ba3fa42beeec5d1cd  perl-Net-DNS-0.48-2.el4.ia64.rpm
817c91e7b08262bee73052a047214e6d  perl-Net-DNS-debuginfo-0.48-2.el4.ia64.rpm

x86_64:
3e8637d884a3b84ea38e697a9ec915c2  perl-Net-DNS-0.48-2.el4.x86_64.rpm
851d0fe7b04b9155384557f57f9245ba  perl-Net-DNS-debuginfo-0.48-2.el4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/perl-Net-DNS-0.48-2.el4.src.rpm
1434303a9458e1f4461e50d8c3b3dbc4  perl-Net-DNS-0.48-2.el4.src.rpm

i386:
28476d3ac5f2deb04d5ac740dbd287f4  perl-Net-DNS-0.48-2.el4.i386.rpm
96274498293760852c9d65f71b50767b  perl-Net-DNS-debuginfo-0.48-2.el4.i386.rpm

ia64:
275e5bd9423c994ba3fa42beeec5d1cd  perl-Net-DNS-0.48-2.el4.ia64.rpm
817c91e7b08262bee73052a047214e6d  perl-Net-DNS-debuginfo-0.48-2.el4.ia64.rpm

x86_64:
3e8637d884a3b84ea38e697a9ec915c2  perl-Net-DNS-0.48-2.el4.x86_64.rpm
851d0fe7b04b9155384557f57f9245ba  perl-Net-DNS-debuginfo-0.48-2.el4.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3377
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2007 Red Hat, Inc.
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