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Red Hat: RHSA-2015:2658-01 Important: bind97 DoS Attack

Redhat Large Esm H500
Updated bind97 packages that fix one security issue are now available for Red Hat Enterprise Linux 5. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which
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====================================================================                   Red Hat Security Advisory

Synopsis:          Important: bind97 security update
Advisory ID:       RHSA-2015:2658-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2015:2658.html
Issue date:        2015-12-16
CVE Names:         CVE-2015-8000 
====================================================================
1. Summary:

Updated bind97 packages that fix one security issue are now available for
Red Hat Enterprise Linux 5.

Red Hat Product Security 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 (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop Workstation (v. 5 client) - i386, 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 denial of service flaw was found in the way BIND processed certain
records with malformed class attributes. A remote attacker could use this
flaw to send a query to request a cached record with a malformed class
attribute that would cause named functioning as an authoritative or
recursive server to crash. (CVE-2015-8000)

Note: This issue affects authoritative servers as well as recursive
servers, however authoritative servers are at limited risk if they perform
authentication when making recursive queries to resolve addresses for
servers listed in NS RRSETs.

Red Hat would like to thank ISC for reporting this issue.

All bind97 users are advised to upgrade to these updated packages, which
contain a backported patch to correct 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.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

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

1291176 - CVE-2015-8000 bind: responses with a malformed class attribute can trigger an assertion failure in db.c

6. Package List:

Red Hat Enterprise Linux Desktop Workstation (v. 5 client):

Source:
bind97-9.7.0-21.P2.el5_11.4.src.rpm

i386:
bind97-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-chroot-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-devel-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-libs-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-utils-9.7.0-21.P2.el5_11.4.i386.rpm

x86_64:
bind97-9.7.0-21.P2.el5_11.4.x86_64.rpm
bind97-chroot-9.7.0-21.P2.el5_11.4.x86_64.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.4.x86_64.rpm
bind97-devel-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-devel-9.7.0-21.P2.el5_11.4.x86_64.rpm
bind97-libs-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-libs-9.7.0-21.P2.el5_11.4.x86_64.rpm
bind97-utils-9.7.0-21.P2.el5_11.4.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
bind97-9.7.0-21.P2.el5_11.4.src.rpm

i386:
bind97-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-chroot-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-devel-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-libs-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-utils-9.7.0-21.P2.el5_11.4.i386.rpm

ia64:
bind97-9.7.0-21.P2.el5_11.4.ia64.rpm
bind97-chroot-9.7.0-21.P2.el5_11.4.ia64.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.4.ia64.rpm
bind97-devel-9.7.0-21.P2.el5_11.4.ia64.rpm
bind97-libs-9.7.0-21.P2.el5_11.4.ia64.rpm
bind97-utils-9.7.0-21.P2.el5_11.4.ia64.rpm

ppc:
bind97-9.7.0-21.P2.el5_11.4.ppc.rpm
bind97-chroot-9.7.0-21.P2.el5_11.4.ppc.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.4.ppc.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.4.ppc64.rpm
bind97-devel-9.7.0-21.P2.el5_11.4.ppc.rpm
bind97-devel-9.7.0-21.P2.el5_11.4.ppc64.rpm
bind97-libs-9.7.0-21.P2.el5_11.4.ppc.rpm
bind97-libs-9.7.0-21.P2.el5_11.4.ppc64.rpm
bind97-utils-9.7.0-21.P2.el5_11.4.ppc.rpm

s390x:
bind97-9.7.0-21.P2.el5_11.4.s390x.rpm
bind97-chroot-9.7.0-21.P2.el5_11.4.s390x.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.4.s390.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.4.s390x.rpm
bind97-devel-9.7.0-21.P2.el5_11.4.s390.rpm
bind97-devel-9.7.0-21.P2.el5_11.4.s390x.rpm
bind97-libs-9.7.0-21.P2.el5_11.4.s390.rpm
bind97-libs-9.7.0-21.P2.el5_11.4.s390x.rpm
bind97-utils-9.7.0-21.P2.el5_11.4.s390x.rpm

x86_64:
bind97-9.7.0-21.P2.el5_11.4.x86_64.rpm
bind97-chroot-9.7.0-21.P2.el5_11.4.x86_64.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.4.x86_64.rpm
bind97-devel-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-devel-9.7.0-21.P2.el5_11.4.x86_64.rpm
bind97-libs-9.7.0-21.P2.el5_11.4.i386.rpm
bind97-libs-9.7.0-21.P2.el5_11.4.x86_64.rpm
bind97-utils-9.7.0-21.P2.el5_11.4.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

7. References:

https://access.redhat.com/security/cve/CVE-2015-8000
https://access.redhat.com/security/updates/classification#important
https://kb.isc.org/docs/aa-01317

8. Contact:

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

Copyright 2015 Red Hat, Inc.
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Red Hat: RHSA-2015:2658-01 Important: bind97 DoS Attack

red hat
Calendar Grey December 16, 2015
Dist Redhat Esm H88
New bind97 updates for Red Hat Linux address critical DoS vulnerabilities, categorized as important by Red Hat Security. Refer to advisory ID for further information.
Updated bind97 packages that fix one security issue are now available for Red Hat Enterprise Linux 5

Solution

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

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Summary

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 denial of service flaw was found in the way BIND processed certain records with malformed class attributes. A remote attacker could use this flaw to send a query to request a cached record with a malformed class attribute that would cause named functioning as an authoritative or recursive server to crash. (CVE-2015-8000)
Note: This issue affects authoritative servers as well as recursive servers, however authoritative servers are at limited risk if they perform authentication when making recursive queries to resolve addresses for servers listed in NS RRSETs.
Red Hat would like to thank ISC for reporting this issue.
All bind97 users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the update, the BIND daemon (named) will be restarted automatically.

References

https://access.redhat.com/security/cve/CVE-2015-8000 https://access.redhat.com/security/updates/classification#important https://kb.isc.org/docs/aa-01317

Package List

Red Hat Enterprise Linux Desktop Workstation (v. 5 client):
Source: bind97-9.7.0-21.P2.el5_11.4.src.rpm
i386: bind97-9.7.0-21.P2.el5_11.4.i386.rpm bind97-chroot-9.7.0-21.P2.el5_11.4.i386.rpm bind97-debuginfo-9.7.0-21.P2.el5_11.4.i386.rpm bind97-devel-9.7.0-21.P2.el5_11.4.i386.rpm bind97-libs-9.7.0-21.P2.el5_11.4.i386.rpm bind97-utils-9.7.0-21.P2.el5_11.4.i386.rpm
x86_64: bind97-9.7.0-21.P2.el5_11.4.x86_64.rpm bind97-chroot-9.7.0-21.P2.el5_11.4.x86_64.rpm bind97-debuginfo-9.7.0-21.P2.el5_11.4.i386.rpm bind97-debuginfo-9.7.0-21.P2.el5_11.4.x86_64.rpm bind97-devel-9.7.0-21.P2.el5_11.4.i386.rpm bind97-devel-9.7.0-21.P2.el5_11.4.x86_64.rpm bind97-libs-9.7.0-21.P2.el5_11.4.i386.rpm bind97-libs-9.7.0-21.P2.el5_11.4.x86_64.rpm bind97-utils-9.7.0-21.P2.el5_11.4.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source: bind97-9.7.0-21.P2.el5_11.4.src.rpm
i386: bind97-9.7.0-21.P2.el5_11.4.i386.rpm bind97-chroot-9.7.0-21.P2.el5_11.4.i386.rpm bind97-debuginfo-9.7.0-21.P2.el5_11.4.i386.rpm bind97-devel-9.7.0-21.P2.el5_11.4.i386.rpm bind97-libs-9.7.0-21.P2.el5_11.4.i386.rpm bind97-utils-9.7.0-21.P2.el5_11.4.i386.rpm
ia64: bind97-9.7.0-21.P2.el5_11.4.ia64.rpm bind97-chroot-9.7.0-21.P2.el5_11.4.ia64.rpm bind97-debuginfo-9.7.0-21.P2.el5_11.4.ia64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2015:2658-01
Product: Red Hat Enterprise Linux
Issue date: 2015-12-16

Topic

Updated bind97 packages that fix one security issue are now available forRed Hat Enterprise Linux 5.Red Hat Product Security has rated this update as having Important securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.

Relevant Releases Architectures

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop Workstation (v. 5 client) - i386, x86_64

Bugs Fixed

1291176 - CVE-2015-8000 bind: responses with a malformed class attribute can trigger an assertion failure in db.c

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