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Red Hat Enterprise Linux 7 RHSA-2015:1443-01 Important: BIND DoS Fix

red hat
Calendar Grey July 20, 2015
Dist Redhat Esm H88
SUSE releases patched Samba packages addressing critical vulnerabilities. Update recommended for improved protection on SUSE Linux Enterprise Server 12.
Updated bind packages that fix one security issue are now available for Red Hat Enterprise Linux 7

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

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 performed DNSSEC validation. An attacker able to make BIND (functioning as a DNS resolver with DNSSEC validation enabled) resolve a name in an attacker-controlled domain could cause named to exit unexpectedly with an assertion failure. (CVE-2015-4620)
Red Hat would like to thank ISC for reporting this issue.
All bind users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the update, the BIND daemon (named) will be restarted automatically.

Topics%20covered

Topics Covered

security advisory denial of service bind important security red hat enterprise

References

https://access.redhat.com/security/cve/CVE-2015-4620 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: bind-9.9.4-18.el7_1.2.src.rpm
noarch: bind-license-9.9.4-18.el7_1.2.noarch.rpm
x86_64: bind-debuginfo-9.9.4-18.el7_1.2.i686.rpm bind-debuginfo-9.9.4-18.el7_1.2.x86_64.rpm bind-libs-9.9.4-18.el7_1.2.i686.rpm bind-libs-9.9.4-18.el7_1.2.x86_64.rpm bind-libs-lite-9.9.4-18.el7_1.2.i686.rpm bind-libs-lite-9.9.4-18.el7_1.2.x86_64.rpm bind-utils-9.9.4-18.el7_1.2.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: bind-9.9.4-18.el7_1.2.x86_64.rpm bind-chroot-9.9.4-18.el7_1.2.x86_64.rpm bind-debuginfo-9.9.4-18.el7_1.2.i686.rpm bind-debuginfo-9.9.4-18.el7_1.2.x86_64.rpm bind-devel-9.9.4-18.el7_1.2.i686.rpm bind-devel-9.9.4-18.el7_1.2.x86_64.rpm bind-lite-devel-9.9.4-18.el7_1.2.i686.rpm bind-lite-devel-9.9.4-18.el7_1.2.x86_64.rpm bind-sdb-9.9.4-18.el7_1.2.x86_64.rpm bind-sdb-chroot-9.9.4-18.el7_1.2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: bind-9.9.4-18.el7_1.2.src.rpm
noarch: bind-license-9.9.4-18.el7_1.2.noarch.rpm
x86_64: bind-debuginfo-9.9.4-18.el7_1.2.i686.rpm bind-debuginfo-9.9.4-18.el7_1.2.x86_64.rpm bind-libs-9.9.4-18.el7_1.2.i686.rpm bind-libs-9.9.4-18.el7_1.2.x86_64.rpm bind-libs-lite-9.9.4-18.el7_1.2.i686.rpm bind-libs-lite-9.9.4-18.el7_1.2.x86_64.rpm bind-utils-9.9.4-18.el7_1.2.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2015:1443-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:1443.html
Issue date: 2015-07-20

Topic

Updated bind packages that fix one security issue are now available for RedHat Enterprise Linux 7.Red Hat Product Security has rated this update as having Important securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.

Topics%20covered

Topics Covered

security advisory denial of service bind important security red hat enterprise

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1237258 - CVE-2015-4620 bind: abort DoS caused by uninitialized value use in isselfsigned()

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