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Red Hat Enterprise Linux 5 RHSA-2012:1266-01 Important: bind97 DoS

red hat
Calendar Grey September 14, 2012
Scroller Redhat
Patch released to address critical bind97 vulnerability on RHEL 5. Vital update incorporating significant security enhancements.
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.

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/knowledge/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 flaw was found in the way BIND handled resource records with a large RDATA value. A malicious owner of a DNS domain could use this flaw to create specially-crafted DNS resource records, that would cause a recursive resolver or secondary server to exit unexpectedly with an assertion failure. (CVE-2012-4244)
Users of bind97 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 Red Hat update DoS important bind97 DNS exploit

References

https://access.redhat.com/security/cve/CVE-2012-4244 https://access.redhat.com/security/updates/classification/#important

Package List

RHEL Desktop Workstation (v. 5 client):
Source:
i386: bind97-9.7.0-10.P2.el5_8.3.i386.rpm bind97-chroot-9.7.0-10.P2.el5_8.3.i386.rpm bind97-debuginfo-9.7.0-10.P2.el5_8.3.i386.rpm bind97-devel-9.7.0-10.P2.el5_8.3.i386.rpm bind97-libs-9.7.0-10.P2.el5_8.3.i386.rpm bind97-utils-9.7.0-10.P2.el5_8.3.i386.rpm
x86_64: bind97-9.7.0-10.P2.el5_8.3.x86_64.rpm bind97-chroot-9.7.0-10.P2.el5_8.3.x86_64.rpm bind97-debuginfo-9.7.0-10.P2.el5_8.3.i386.rpm bind97-debuginfo-9.7.0-10.P2.el5_8.3.x86_64.rpm bind97-devel-9.7.0-10.P2.el5_8.3.i386.rpm bind97-devel-9.7.0-10.P2.el5_8.3.x86_64.rpm bind97-libs-9.7.0-10.P2.el5_8.3.i386.rpm bind97-libs-9.7.0-10.P2.el5_8.3.x86_64.rpm bind97-utils-9.7.0-10.P2.el5_8.3.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: bind97-9.7.0-10.P2.el5_8.3.i386.rpm bind97-chroot-9.7.0-10.P2.el5_8.3.i386.rpm bind97-debuginfo-9.7.0-10.P2.el5_8.3.i386.rpm bind97-devel-9.7.0-10.P2.el5_8.3.i386.rpm bind97-libs-9.7.0-10.P2.el5_8.3.i386.rpm bind97-utils-9.7.0-10.P2.el5_8.3.i386.rpm
ia64: bind97-9.7.0-10.P2.el5_8.3.ia64.rpm bind97-chroot-9.7.0-10.P2.el5_8.3.ia64.rpm bind97-debuginfo-9.7.0-10.P2.el5_8.3.ia64.rpm bind97-devel-9.7.0-10.P2.el5_8.3.ia64.rpm bind97-libs-9.7.0-10.P2.el5_8.3.ia64.rpm bind97-utils-9.7.0-10.P2.el5_8.3.ia64.rpm
ppc:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2012:1266-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2012:1266.html
Issue date: 2012-09-14

Topic

Updated bind97 packages that fix one security issue are now available forRed Hat Enterprise Linux 5.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 Red Hat update DoS important bind97 DNS exploit

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

Bugs Fixed

856754 - CVE-2012-4244 bind: specially crafted resource record causes named to exit

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