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Alerts This Week
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Red Hat: RHSA-2012-1123 Important: Bind DNS Failure Impact

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Calendar Grey July 31, 2012
Scroller Redhat
Crucial bind security patch for Red Hat Linux addresses major vulnerabilities and improves overall system security. Discover additional details here!
Updated bind packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6

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/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.
An uninitialized data structure use flaw was found in BIND when DNSSEC validation was enabled. A remote attacker able to send a large number of queries to a DNSSEC validating BIND resolver could use this flaw to cause it to exit unexpectedly with an assertion failure. (CVE-2012-3817)
Users of bind are advised to upgrade to these updated packages, which correct this issue. After installing the update, the BIND daemon (named) will be restarted automatically.

Topics%20covered

Topics Covered

security advisory critical issue Red Hat update bind security impact DNS flaw

References

https://access.redhat.com/security/cve/CVE-2012-3817 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: bind-9.3.6-20.P1.el5_8.2.i386.rpm bind-debuginfo-9.3.6-20.P1.el5_8.2.i386.rpm bind-libs-9.3.6-20.P1.el5_8.2.i386.rpm bind-sdb-9.3.6-20.P1.el5_8.2.i386.rpm bind-utils-9.3.6-20.P1.el5_8.2.i386.rpm
x86_64: bind-9.3.6-20.P1.el5_8.2.x86_64.rpm bind-debuginfo-9.3.6-20.P1.el5_8.2.i386.rpm bind-debuginfo-9.3.6-20.P1.el5_8.2.x86_64.rpm bind-libs-9.3.6-20.P1.el5_8.2.i386.rpm bind-libs-9.3.6-20.P1.el5_8.2.x86_64.rpm bind-sdb-9.3.6-20.P1.el5_8.2.x86_64.rpm bind-utils-9.3.6-20.P1.el5_8.2.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
i386: bind-chroot-9.3.6-20.P1.el5_8.2.i386.rpm bind-debuginfo-9.3.6-20.P1.el5_8.2.i386.rpm bind-devel-9.3.6-20.P1.el5_8.2.i386.rpm bind-libbind-devel-9.3.6-20.P1.el5_8.2.i386.rpm caching-nameserver-9.3.6-20.P1.el5_8.2.i386.rpm
x86_64: bind-chroot-9.3.6-20.P1.el5_8.2.x86_64.rpm bind-debuginfo-9.3.6-20.P1.el5_8.2.i386.rpm bind-debuginfo-9.3.6-20.P1.el5_8.2.x86_64.rpm bind-devel-9.3.6-20.P1.el5_8.2.i386.rpm bind-devel-9.3.6-20.P1.el5_8.2.x86_64.rpm bind-libbind-devel-9.3.6-20.P1.el5_8.2.i386.rpm bind-libbind-devel-9.3.6-20.P1.el5_8.2.x86_64.rpm caching-nameserver-9.3.6-20.P1.el5_8.2.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: bind-9.3.6-20.P1.el5_8.2.i386.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2012:1123-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2012:1123.html
Issue date: 2012-07-31

Topic

Updated bind packages that fix one security issue are now available forRed Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as havingimportant security impact. A Common Vulnerability Scoring System (CVSS)base score, which gives a detailed severity rating, is available from theCVE link in the References section.

Topics%20covered

Topics Covered

security advisory critical issue Red Hat update bind security impact DNS flaw

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

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

842897 - CVE-2012-3817 bind: heavy DNSSEC validation load can cause assertion failure

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