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Category:   Application (Generic)  >   BIND Vendors:   ISC (Internet Software Consortium)
(Red Hat Issues Fix) ISC BIND Invalid Record Caching Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID:  1026356
SecurityTracker URL:  http://securitytracker.com/id/1026356
CVE Reference:   CVE-2011-4313   (Links to External Site)
Date:  Nov 29 2011
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 9.4-ESV, 9.6-ESV, 9.7.x, 9.8.x
Description:   A vulnerability was reported in ISC BIND. A remote user can cause denial of service conditions.

A remote user can send specially crafted data to cause the target BIND service to cache an invalid record. A subsequent query can trigger an error in 'query.c' and cause BIND to crash.

Impact:   A remote user can cause the target BIND service to crash.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2011-1496.html

Vendor URL:  www.isc.org/software/bind/advisories/cve-2011-4313 (Links to External Site)
Cause:   State 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.
Nov 17 2011 ISC BIND Invalid Record Caching Flaw Lets Remote Users Deny Service



 Source Message Contents

Subject:  [RHSA-2011:1496-01] Important: bind security update

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

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: bind security update
Advisory ID:       RHSA-2011:1496-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2011-1496.html
Issue date:        2011-11-29
CVE Names:         CVE-2011-4313 
=====================================================================

1. Summary:

Updated bind packages that fix one security issue are now available for
Red Hat Enterprise Linux 4.

The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.

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. Description:

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain
Name System (DNS) protocols. BIND includes a DNS server (named); a resolver
library (routines for applications to use when interfacing with DNS); and
tools for verifying that the DNS server is operating correctly.

A flaw was discovered in the way BIND handled certain DNS queries, which
caused it to cache an invalid record. A remote attacker could use this
flaw to send repeated queries for this invalid record, causing the
resolvers to exit unexpectedly due to a failed assertion. (CVE-2011-4313)

Users of bind are advised to upgrade to these updated packages, which
resolve this issue. After installing the update, the BIND daemon (named)
will be restarted automatically.

4. Solution:

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

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

754398 - CVE-2011-4313 bind: Remote denial of service against recursive servers via logging negative cache entry

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/bind-9.2.4-38.el4.src.rpm

i386:
bind-9.2.4-38.el4.i386.rpm
bind-chroot-9.2.4-38.el4.i386.rpm
bind-debuginfo-9.2.4-38.el4.i386.rpm
bind-devel-9.2.4-38.el4.i386.rpm
bind-libs-9.2.4-38.el4.i386.rpm
bind-utils-9.2.4-38.el4.i386.rpm

ia64:
bind-9.2.4-38.el4.ia64.rpm
bind-chroot-9.2.4-38.el4.ia64.rpm
bind-debuginfo-9.2.4-38.el4.i386.rpm
bind-debuginfo-9.2.4-38.el4.ia64.rpm
bind-devel-9.2.4-38.el4.ia64.rpm
bind-libs-9.2.4-38.el4.i386.rpm
bind-libs-9.2.4-38.el4.ia64.rpm
bind-utils-9.2.4-38.el4.ia64.rpm

ppc:
bind-9.2.4-38.el4.ppc.rpm
bind-chroot-9.2.4-38.el4.ppc.rpm
bind-debuginfo-9.2.4-38.el4.ppc.rpm
bind-debuginfo-9.2.4-38.el4.ppc64.rpm
bind-devel-9.2.4-38.el4.ppc.rpm
bind-libs-9.2.4-38.el4.ppc.rpm
bind-libs-9.2.4-38.el4.ppc64.rpm
bind-utils-9.2.4-38.el4.ppc.rpm

s390:
bind-9.2.4-38.el4.s390.rpm
bind-chroot-9.2.4-38.el4.s390.rpm
bind-debuginfo-9.2.4-38.el4.s390.rpm
bind-devel-9.2.4-38.el4.s390.rpm
bind-libs-9.2.4-38.el4.s390.rpm
bind-utils-9.2.4-38.el4.s390.rpm

s390x:
bind-9.2.4-38.el4.s390x.rpm
bind-chroot-9.2.4-38.el4.s390x.rpm
bind-debuginfo-9.2.4-38.el4.s390.rpm
bind-debuginfo-9.2.4-38.el4.s390x.rpm
bind-devel-9.2.4-38.el4.s390x.rpm
bind-libs-9.2.4-38.el4.s390.rpm
bind-libs-9.2.4-38.el4.s390x.rpm
bind-utils-9.2.4-38.el4.s390x.rpm

x86_64:
bind-9.2.4-38.el4.x86_64.rpm
bind-chroot-9.2.4-38.el4.x86_64.rpm
bind-debuginfo-9.2.4-38.el4.i386.rpm
bind-debuginfo-9.2.4-38.el4.x86_64.rpm
bind-devel-9.2.4-38.el4.x86_64.rpm
bind-libs-9.2.4-38.el4.i386.rpm
bind-libs-9.2.4-38.el4.x86_64.rpm
bind-utils-9.2.4-38.el4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/bind-9.2.4-38.el4.src.rpm

i386:
bind-9.2.4-38.el4.i386.rpm
bind-chroot-9.2.4-38.el4.i386.rpm
bind-debuginfo-9.2.4-38.el4.i386.rpm
bind-devel-9.2.4-38.el4.i386.rpm
bind-libs-9.2.4-38.el4.i386.rpm
bind-utils-9.2.4-38.el4.i386.rpm

x86_64:
bind-9.2.4-38.el4.x86_64.rpm
bind-chroot-9.2.4-38.el4.x86_64.rpm
bind-debuginfo-9.2.4-38.el4.i386.rpm
bind-debuginfo-9.2.4-38.el4.x86_64.rpm
bind-devel-9.2.4-38.el4.x86_64.rpm
bind-libs-9.2.4-38.el4.i386.rpm
bind-libs-9.2.4-38.el4.x86_64.rpm
bind-utils-9.2.4-38.el4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/bind-9.2.4-38.el4.src.rpm

i386:
bind-9.2.4-38.el4.i386.rpm
bind-chroot-9.2.4-38.el4.i386.rpm
bind-debuginfo-9.2.4-38.el4.i386.rpm
bind-devel-9.2.4-38.el4.i386.rpm
bind-libs-9.2.4-38.el4.i386.rpm
bind-utils-9.2.4-38.el4.i386.rpm

ia64:
bind-9.2.4-38.el4.ia64.rpm
bind-chroot-9.2.4-38.el4.ia64.rpm
bind-debuginfo-9.2.4-38.el4.i386.rpm
bind-debuginfo-9.2.4-38.el4.ia64.rpm
bind-devel-9.2.4-38.el4.ia64.rpm
bind-libs-9.2.4-38.el4.i386.rpm
bind-libs-9.2.4-38.el4.ia64.rpm
bind-utils-9.2.4-38.el4.ia64.rpm

x86_64:
bind-9.2.4-38.el4.x86_64.rpm
bind-chroot-9.2.4-38.el4.x86_64.rpm
bind-debuginfo-9.2.4-38.el4.i386.rpm
bind-debuginfo-9.2.4-38.el4.x86_64.rpm
bind-devel-9.2.4-38.el4.x86_64.rpm
bind-libs-9.2.4-38.el4.i386.rpm
bind-libs-9.2.4-38.el4.x86_64.rpm
bind-utils-9.2.4-38.el4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/bind-9.2.4-38.el4.src.rpm

i386:
bind-9.2.4-38.el4.i386.rpm
bind-chroot-9.2.4-38.el4.i386.rpm
bind-debuginfo-9.2.4-38.el4.i386.rpm
bind-devel-9.2.4-38.el4.i386.rpm
bind-libs-9.2.4-38.el4.i386.rpm
bind-utils-9.2.4-38.el4.i386.rpm

ia64:
bind-9.2.4-38.el4.ia64.rpm
bind-chroot-9.2.4-38.el4.ia64.rpm
bind-debuginfo-9.2.4-38.el4.i386.rpm
bind-debuginfo-9.2.4-38.el4.ia64.rpm
bind-devel-9.2.4-38.el4.ia64.rpm
bind-libs-9.2.4-38.el4.i386.rpm
bind-libs-9.2.4-38.el4.ia64.rpm
bind-utils-9.2.4-38.el4.ia64.rpm

x86_64:
bind-9.2.4-38.el4.x86_64.rpm
bind-chroot-9.2.4-38.el4.x86_64.rpm
bind-debuginfo-9.2.4-38.el4.i386.rpm
bind-debuginfo-9.2.4-38.el4.x86_64.rpm
bind-devel-9.2.4-38.el4.x86_64.rpm
bind-libs-9.2.4-38.el4.i386.rpm
bind-libs-9.2.4-38.el4.x86_64.rpm
bind-utils-9.2.4-38.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://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2011-4313.html
https://access.redhat.com/security/updates/classification/#important
https://www.isc.org/software/bind/advisories/cve-2011-4313

8. Contact:

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

Copyright 2011 Red Hat, Inc.
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