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Red Hat Enterprise Linux 5: RHSA-2009:1620-01 Moderate Cache Poisoning

red hat
Calendar Grey November 30, 2009
Dist Redhat Esm H88
Keep your Red Hat Enterprise Linux 5 safeguarded by implementing the latest security patch for bind, which mitigates dangers associated with cache poisoning vulnerabilities.
Updated bind packages that fix one security issue are now available for Red Hat Enterprise Linux 5. This update has been rated as having moderate security impact by the Red Hat Se...

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

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.
Michael Sinatra discovered that BIND was incorrectly caching responses without performing proper DNSSEC validation, when those responses were received during the resolution of a recursive client query that requested DNSSEC records but indicated that checking should be disabled. A remote attacker could use this flaw to bypass the DNSSEC validation check and perform a cache poisoning attack if the target BIND server was receiving such client queries. (CVE-2009-4022)
All BIND users are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing the update, the BIND daemon (named) will be restarted automatically.

Topics%20covered

Topics Covered

security advisory moderate security update bind Red Hat Enterprise Linux cache poisoning

References

https://www.cve.org/CVERecord?id=CVE-2009-4022 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: bind-9.3.6-4.P1.el5_4.1.i386.rpm bind-debuginfo-9.3.6-4.P1.el5_4.1.i386.rpm bind-libs-9.3.6-4.P1.el5_4.1.i386.rpm bind-sdb-9.3.6-4.P1.el5_4.1.i386.rpm bind-utils-9.3.6-4.P1.el5_4.1.i386.rpm
x86_64: bind-9.3.6-4.P1.el5_4.1.x86_64.rpm bind-debuginfo-9.3.6-4.P1.el5_4.1.i386.rpm bind-debuginfo-9.3.6-4.P1.el5_4.1.x86_64.rpm bind-libs-9.3.6-4.P1.el5_4.1.i386.rpm bind-libs-9.3.6-4.P1.el5_4.1.x86_64.rpm bind-sdb-9.3.6-4.P1.el5_4.1.x86_64.rpm bind-utils-9.3.6-4.P1.el5_4.1.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
i386: bind-chroot-9.3.6-4.P1.el5_4.1.i386.rpm bind-debuginfo-9.3.6-4.P1.el5_4.1.i386.rpm bind-devel-9.3.6-4.P1.el5_4.1.i386.rpm bind-libbind-devel-9.3.6-4.P1.el5_4.1.i386.rpm caching-nameserver-9.3.6-4.P1.el5_4.1.i386.rpm
x86_64: bind-chroot-9.3.6-4.P1.el5_4.1.x86_64.rpm bind-debuginfo-9.3.6-4.P1.el5_4.1.i386.rpm bind-debuginfo-9.3.6-4.P1.el5_4.1.x86_64.rpm bind-devel-9.3.6-4.P1.el5_4.1.i386.rpm bind-devel-9.3.6-4.P1.el5_4.1.x86_64.rpm bind-libbind-devel-9.3.6-4.P1.el5_4.1.i386.rpm bind-libbind-devel-9.3.6-4.P1.el5_4.1.x86_64.rpm caching-nameserver-9.3.6-4.P1.el5_4.1.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: bind-9.3.6-4.P1.el5_4.1.i386.rpm

Read the Full Advisory


Advisory ID: RHSA-2009:1620-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2009:1620.html
Issue date: 2009-11-30

Topic

Updated bind packages that fix one security issue are now available forRed Hat Enterprise Linux 5.This update has been rated as having moderate security impact by the RedHat Security Response Team.

Topics%20covered

Topics Covered

security advisory moderate security update bind Red Hat Enterprise Linux cache poisoning

Relevant Releases Architectures

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

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

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

Bugs Fixed

538744 - CVE-2009-4022 bind: cache poisoning using not validated DNSSEC responses

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