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

red hat
Calendar Grey July 20, 2015
Dist Redhat Esm H88
Crucial security patch for BIND software targeting flaws in Red Hat Enterprise Linux 7 has been issued.
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 update bind important security impact red hat enterprise dos

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 update bind important security impact red hat enterprise dos

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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