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Red Hat Enterprise Linux 4: RHSA-2011:1496-01 Important Bind DoS Fix

red hat
Calendar Grey November 29, 2011
Dist Redhat Esm H88
Critical notice regarding bind configuration to address a major security vulnerability in Red Hat Enterprise Linux. Please update to the latest version immediately!
Updated bind packages that fix one security issue are now available for Red Hat Enterprise Linux 4

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/kb/docs/DOC-11259

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 discovered in the way BIND handled certain DNS queries, which caused it to cache an invalid record. A remote attacker could use this flaw to send repeated queries for this invalid record, causing the resolvers to exit unexpectedly due to a failed assertion. (CVE-2011-4313)
Users of bind are advised to upgrade to these updated packages, which resolve this issue. After installing the update, the BIND daemon (named) will be restarted automatically.

Topics%20covered

Topics Covered

security advisory Red Hat Enterprise Linux DNS issue critical impact DoS fix bind update important advisory

References

https://access.redhat.com/security/cve/CVE-2011-4313 https://access.redhat.com/security/updates/classification/#important https://kb.isc.org/docs/aa-00544

Package List

Red Hat Enterprise Linux AS version 4:
Source:
i386: bind-9.2.4-38.el4.i386.rpm bind-chroot-9.2.4-38.el4.i386.rpm bind-debuginfo-9.2.4-38.el4.i386.rpm bind-devel-9.2.4-38.el4.i386.rpm bind-libs-9.2.4-38.el4.i386.rpm bind-utils-9.2.4-38.el4.i386.rpm
ia64: bind-9.2.4-38.el4.ia64.rpm bind-chroot-9.2.4-38.el4.ia64.rpm bind-debuginfo-9.2.4-38.el4.i386.rpm bind-debuginfo-9.2.4-38.el4.ia64.rpm bind-devel-9.2.4-38.el4.ia64.rpm bind-libs-9.2.4-38.el4.i386.rpm bind-libs-9.2.4-38.el4.ia64.rpm bind-utils-9.2.4-38.el4.ia64.rpm
ppc: bind-9.2.4-38.el4.ppc.rpm bind-chroot-9.2.4-38.el4.ppc.rpm bind-debuginfo-9.2.4-38.el4.ppc.rpm bind-debuginfo-9.2.4-38.el4.ppc64.rpm bind-devel-9.2.4-38.el4.ppc.rpm bind-libs-9.2.4-38.el4.ppc.rpm bind-libs-9.2.4-38.el4.ppc64.rpm bind-utils-9.2.4-38.el4.ppc.rpm
s390: bind-9.2.4-38.el4.s390.rpm bind-chroot-9.2.4-38.el4.s390.rpm bind-debuginfo-9.2.4-38.el4.s390.rpm bind-devel-9.2.4-38.el4.s390.rpm bind-libs-9.2.4-38.el4.s390.rpm bind-utils-9.2.4-38.el4.s390.rpm
s390x: bind-9.2.4-38.el4.s390x.rpm bind-chroot-9.2.4-38.el4.s390x.rpm bind-debuginfo-9.2.4-38.el4.s390.rpm bind-debuginfo-9.2.4-38.el4.s390x.rpm bind-devel-9.2.4-38.el4.s390x.rpm bind-libs-9.2.4-38.el4.s390.rpm bind-libs-9.2.4-38.el4.s390x.rpm bind-utils-9.2.4-38.el4.s390x.rpm
x86_64:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2011:1496-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:1496.html
Issue date: 2011-11-29

Topic

Updated bind packages that fix one security issue are now available forRed Hat Enterprise Linux 4.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 Enterprise Linux DNS issue critical impact DoS fix bind update important advisory

Relevant Releases Architectures

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Enterprise Linux Desktop version 4 - i386, x86_64

Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

Bugs Fixed

754398 - CVE-2011-4313 bind: Remote denial of service against recursive servers via logging negative cache entry

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