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Red Hat Enterprise Linux: RHSA-2012:0716-01 Critical BIND Memory Disclosure

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Calendar Grey June 7, 2012
Scroller Redhat
Keep updated on the latest Red Hat Advisory regarding critical bind security patches impacting RHEL 5 and 6 customers.
Updated bind packages that fix two security issues 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.
A flaw was found in the way BIND handled zero length resource data records. 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 crash or, possibly, disclose portions of its memory. (CVE-2012-1667)
A flaw was found in the way BIND handled the updating of cached name server (NS) resource records. A malicious owner of a DNS domain could use this flaw to keep the domain resolvable by the BIND server even after the delegation was removed from the parent DNS zone. With this update, BIND limits the time-to-live of the replacement record to that of the time-to-live of the record being replaced. (CVE-2012-1033)
Users of bind are advised to upgrade to these updated packages, which correct these issues. After installing the update, the BIND daemon (named) will be restarted automatically.

Topics%20covered

Topics Covered

security advisory critical bind Red Hat Enterprise Linux DNS memory disclosure

References

https://access.redhat.com/security/cve/CVE-2012-1033 https://access.redhat.com/security/cve/CVE-2012-1667 https://access.redhat.com/security/updates/classification#important https://kb.isc.org/docs/aa-00691

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: bind-9.3.6-20.P1.el5_8.1.i386.rpm bind-debuginfo-9.3.6-20.P1.el5_8.1.i386.rpm bind-libs-9.3.6-20.P1.el5_8.1.i386.rpm bind-sdb-9.3.6-20.P1.el5_8.1.i386.rpm bind-utils-9.3.6-20.P1.el5_8.1.i386.rpm
x86_64: bind-9.3.6-20.P1.el5_8.1.x86_64.rpm bind-debuginfo-9.3.6-20.P1.el5_8.1.i386.rpm bind-debuginfo-9.3.6-20.P1.el5_8.1.x86_64.rpm bind-libs-9.3.6-20.P1.el5_8.1.i386.rpm bind-libs-9.3.6-20.P1.el5_8.1.x86_64.rpm bind-sdb-9.3.6-20.P1.el5_8.1.x86_64.rpm bind-utils-9.3.6-20.P1.el5_8.1.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
i386: bind-chroot-9.3.6-20.P1.el5_8.1.i386.rpm bind-debuginfo-9.3.6-20.P1.el5_8.1.i386.rpm bind-devel-9.3.6-20.P1.el5_8.1.i386.rpm bind-libbind-devel-9.3.6-20.P1.el5_8.1.i386.rpm caching-nameserver-9.3.6-20.P1.el5_8.1.i386.rpm
x86_64: bind-chroot-9.3.6-20.P1.el5_8.1.x86_64.rpm bind-debuginfo-9.3.6-20.P1.el5_8.1.i386.rpm bind-debuginfo-9.3.6-20.P1.el5_8.1.x86_64.rpm bind-devel-9.3.6-20.P1.el5_8.1.i386.rpm bind-devel-9.3.6-20.P1.el5_8.1.x86_64.rpm bind-libbind-devel-9.3.6-20.P1.el5_8.1.i386.rpm bind-libbind-devel-9.3.6-20.P1.el5_8.1.x86_64.rpm caching-nameserver-9.3.6-20.P1.el5_8.1.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: bind-9.3.6-20.P1.el5_8.1.i386.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2012:0716-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2012:0716.html
Issue date: 2012-06-07

Topic

Updated bind packages that fix two security issues are now available forRed Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as havingimportant security impact. Common Vulnerability Scoring System (CVSS) basescores, which give detailed severity ratings, are available for eachvulnerability from the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory critical bind Red Hat Enterprise Linux DNS memory disclosure

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

788650 - CVE-2012-1033 bind: deleted domain name resolving flaw

828078 - CVE-2012-1667 bind: handling of zero length rdata can cause named to terminate unexpectedly

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